diff --git a/.github/auto-comment.yml b/.github/auto-comment.yml
index 1e7b389..520b3ce 100644
--- a/.github/auto-comment.yml
+++ b/.github/auto-comment.yml
@@ -4,17 +4,23 @@ issuesOpened: >
   
   如果有 bug, 请先更新到最新版试试:
   
-  ```sh
+  ```
   acme.sh --upgrade
   ```
   
   please also provide the log with `--debug 2`.
   
+  同时请提供调试输出 `--debug 2`
+  
   see: https://github.com/acmesh-official/acme.sh/wiki/How-to-debug-acme.sh
+  
+  Without `--debug 2` log, your issue will NEVER get replied.
+  
+  没有调试输出, 你的 issue 不会得到任何解答.
 
 
 pullRequestOpened: >
-  First, never send a PR to `master` branch, it will never be accepted. Please send to the `dev` branch instead.
+  First, NEVER send a PR to `master` branch, it will NEVER be accepted. Please send to the `dev` branch instead.
   
   If this is a PR to support new DNS API or new notification API, please read this guide first:
   https://github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
@@ -23,6 +29,12 @@ pullRequestOpened: >
   
   Then add your usage here:
   https://github.com/acmesh-official/acme.sh/wiki/dnsapi
-
+   
+  Or some other wiki pages:
+  
+  https://github.com/acmesh-official/acme.sh/wiki/deployhooks
+  
+  https://github.com/acmesh-official/acme.sh/wiki/notify
+  
 
 
diff --git a/acme.sh b/acme.sh
index f672710..57f4590 100755
--- a/acme.sh
+++ b/acme.sh
@@ -138,6 +138,8 @@ _NOTIFY_WIKI="https://github.com/acmesh-official/acme.sh/wiki/notify"
 
 _SUDO_WIKI="https://github.com/acmesh-official/acme.sh/wiki/sudo"
 
+_REVOKE_WIKI="https://github.com/acmesh-official/acme.sh/wiki/revokecert"
+
 _DNS_MANUAL_ERR="The dns manual mode can not renew automatically, you must issue it again manually. You'd better use the other modes instead."
 
 _DNS_MANUAL_WARN="It seems that you are using dns manual mode. please take care: $_DNS_MANUAL_ERR"
@@ -3512,6 +3514,8 @@ updateaccount() {
   if [ "$ACME_VERSION" = "2" ]; then
     if [ "$ACCOUNT_EMAIL" ]; then
       updjson='{"contact": ["mailto:'$ACCOUNT_EMAIL'"]}'
+    else
+      updjson='{"contact": []}'
     fi
   else
     # ACMEv1: Updates happen the same way a registration is done.
@@ -5454,6 +5458,7 @@ uninstallcronjob() {
 
 }
 
+#domain  isECC  revokeReason
 revoke() {
   Le_Domain="$1"
   if [ -z "$Le_Domain" ]; then
@@ -5462,7 +5467,10 @@ revoke() {
   fi
 
   _isEcc="$2"
-
+  _reason="$3"
+  if [ -z "$_reason" ]; then
+    _reason="0"
+  fi
   _initpath "$Le_Domain" "$_isEcc"
   if [ ! -f "$DOMAIN_CONF" ]; then
     _err "$Le_Domain is not a issued domain, skip."
@@ -5484,7 +5492,7 @@ revoke() {
   _initAPI
 
   if [ "$ACME_VERSION" = "2" ]; then
-    data="{\"certificate\": \"$cert\"}"
+    data="{\"certificate\": \"$cert\",\"reason\":$_reason}"
   else
     data="{\"resource\": \"revoke-cert\", \"certificate\": \"$cert\"}"
   fi
@@ -6293,6 +6301,7 @@ Parameters:
                                      0: Bulk mode. Send all the domain's notifications in one message(mail).
                                      1: Cert mode. Send a message for every single cert.
   --notify-hook   [hookname]        Set the notify hook
+  --revoke-reason [0-10]            The reason for '--revoke' command. See: $_REVOKE_WIKI
 
 "
 }
@@ -6468,6 +6477,7 @@ _process() {
   _notify_hook=""
   _notify_level=""
   _notify_mode=""
+  _revoke_reason=""
   while [ ${#} -gt 0 ]; do
     case "${1}" in
 
@@ -6940,6 +6950,14 @@ _process() {
         _notify_mode="$_nmode"
         shift
         ;;
+      --revoke-reason)
+        _revoke_reason="$2"
+        if _startswith "$_revoke_reason" "-"; then
+          _err "'$_revoke_reason' is not a integer for '$1'"
+          return 1
+        fi
+        shift
+        ;;
       *)
         _err "Unknown parameter : $1"
         return 1
@@ -7027,7 +7045,7 @@ _process() {
       renewAll "$_stopRenewOnError"
       ;;
     revoke)
-      revoke "$_domain" "$_ecc"
+      revoke "$_domain" "$_ecc" "$_revoke_reason"
       ;;
     remove)
       remove "$_domain" "$_ecc"
diff --git a/deploy/ssh.sh b/deploy/ssh.sh
index 9cb0af9..d71637a 100644
--- a/deploy/ssh.sh
+++ b/deploy/ssh.sh
@@ -12,7 +12,7 @@
 # Only a username is required.  All others are optional.
 #
 # The following examples are for QNAP NAS running QTS 4.2
-# export DEPLOY_SSH_CMD=""  # defaults to ssh
+# export DEPLOY_SSH_CMD=""  # defaults to "ssh -T"
 # export DEPLOY_SSH_USER="admin"  # required
 # export DEPLOY_SSH_SERVER="qnap"  # defaults to domain name
 # export DEPLOY_SSH_KEYFILE="/etc/stunnel/stunnel.pem"
@@ -20,7 +20,9 @@
 # export DEPLOY_SSH_CAFILE="/etc/stunnel/uca.pem"
 # export DEPLOY_SSH_FULLCHAIN=""
 # export DEPLOY_SSH_REMOTE_CMD="/etc/init.d/stunnel.sh restart"
-# export DEPLOY_SSH_BACKUP=""  # yes or no, default to yes
+# export DEPLOY_SSH_BACKUP=""  # yes or no, default to yes or previously saved value
+# export DEPLOY_SSH_BACKUP_PATH=".acme_ssh_deploy"  # path on remote system. Defaults to .acme_ssh_deploy
+# export DEPLOY_SSH_MULTI_CALL=""  # yes or no, default to no or previously saved value
 #
 ########  Public functions #####################
 
@@ -31,10 +33,10 @@ ssh_deploy() {
   _ccert="$3"
   _cca="$4"
   _cfullchain="$5"
+  _err_code=0
   _cmdstr=""
-  _homedir='~'
-  _backupprefix="$_homedir/.acme_ssh_deploy/$_cdomain-backup"
-  _backupdir="$_backupprefix-$(_utc_date | tr ' ' '-')"
+  _backupprefix=""
+  _backupdir=""
 
   if [ -f "$DOMAIN_CONF" ]; then
     # shellcheck disable=SC1090
@@ -71,18 +73,62 @@ ssh_deploy() {
     Le_Deploy_ssh_cmd="$DEPLOY_SSH_CMD"
     _savedomainconf Le_Deploy_ssh_cmd "$Le_Deploy_ssh_cmd"
   elif [ -z "$Le_Deploy_ssh_cmd" ]; then
-    Le_Deploy_ssh_cmd="ssh"
+    Le_Deploy_ssh_cmd="ssh -T"
   fi
 
-  # BACKUP is optional. If not provided then default to yes
+  # BACKUP is optional. If not provided then default to previously saved value or yes.
   if [ "$DEPLOY_SSH_BACKUP" = "no" ]; then
     Le_Deploy_ssh_backup="no"
-  elif [ -z "$Le_Deploy_ssh_backup" ]; then
+  elif [ -z "$Le_Deploy_ssh_backup" ] || [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
     Le_Deploy_ssh_backup="yes"
   fi
   _savedomainconf Le_Deploy_ssh_backup "$Le_Deploy_ssh_backup"
 
+  # BACKUP_PATH is optional. If not provided then default to previously saved value or .acme_ssh_deploy
+  if [ -n "$DEPLOY_SSH_BACKUP_PATH" ]; then
+    Le_Deploy_ssh_backup_path="$DEPLOY_SSH_BACKUP_PATH"
+  elif [ -z "$Le_Deploy_ssh_backup_path" ]; then
+    Le_Deploy_ssh_backup_path=".acme_ssh_deploy"
+  fi
+  _savedomainconf Le_Deploy_ssh_backup_path "$Le_Deploy_ssh_backup_path"
+
+  # MULTI_CALL is optional. If not provided then default to previously saved
+  # value (which may be undefined... equivalent to "no").
+  if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
+    Le_Deploy_ssh_multi_call="yes"
+    _savedomainconf Le_Deploy_ssh_multi_call "$Le_Deploy_ssh_multi_call"
+  elif [ "$DEPLOY_SSH_MULTI_CALL" = "no" ]; then
+    Le_Deploy_ssh_multi_call=""
+    _cleardomainconf Le_Deploy_ssh_multi_call
+  fi
+
   _info "Deploy certificates to remote server $Le_Deploy_ssh_user@$Le_Deploy_ssh_server"
+  if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+    _info "Using MULTI_CALL mode... Required commands sent in multiple calls to remote host"
+  else
+    _info "Required commands batched and sent in single call to remote host"
+  fi
+
+  if [ "$Le_Deploy_ssh_backup" = "yes" ]; then
+    _backupprefix="$Le_Deploy_ssh_backup_path/$_cdomain-backup"
+    _backupdir="$_backupprefix-$(_utc_date | tr ' ' '-')"
+    # run cleanup on the backup directory, erase all older
+    # than 180 days (15552000 seconds).
+    _cmdstr="{ now=\"\$(date -u +%s)\"; for fn in $_backupprefix*; \
+do if [ -d \"\$fn\" ] && [ \"\$(expr \$now - \$(date -ur \$fn +%s) )\" -ge \"15552000\" ]; \
+then rm -rf \"\$fn\"; echo \"Backup \$fn deleted as older than 180 days\"; fi; done; }; $_cmdstr"
+    # Alternate version of above... _cmdstr="find $_backupprefix* -type d -mtime +180 2>/dev/null | xargs rm -rf; $_cmdstr"
+    # Create our backup directory for overwritten cert files.
+    _cmdstr="mkdir -p $_backupdir; $_cmdstr"
+    _info "Backup of old certificate files will be placed in remote directory $_backupdir"
+    _info "Backup directories erased after 180 days."
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
+  fi
 
   # KEYFILE is optional.
   # If provided then private key will be copied to provided filename.
@@ -98,6 +144,12 @@ ssh_deploy() {
     # copy new certificate into file.
     _cmdstr="$_cmdstr echo \"$(cat "$_ckey")\" > $Le_Deploy_ssh_keyfile;"
     _info "will copy private key to remote file $Le_Deploy_ssh_keyfile"
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
   fi
 
   # CERTFILE is optional.
@@ -118,6 +170,12 @@ ssh_deploy() {
     # copy new certificate into file.
     _cmdstr="$_cmdstr echo \"$(cat "$_ccert")\" $_pipe $Le_Deploy_ssh_certfile;"
     _info "will copy certificate to remote file $Le_Deploy_ssh_certfile"
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
   fi
 
   # CAFILE is optional.
@@ -139,6 +197,12 @@ ssh_deploy() {
     # copy new certificate into file.
     _cmdstr="$_cmdstr echo \"$(cat "$_cca")\" $_pipe $Le_Deploy_ssh_cafile;"
     _info "will copy CA file to remote file $Le_Deploy_ssh_cafile"
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
   fi
 
   # FULLCHAIN is optional.
@@ -161,6 +225,12 @@ ssh_deploy() {
     # copy new certificate into file.
     _cmdstr="$_cmdstr echo \"$(cat "$_cfullchain")\" $_pipe $Le_Deploy_ssh_fullchain;"
     _info "will copy fullchain to remote file $Le_Deploy_ssh_fullchain"
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
   fi
 
   # REMOTE_CMD is optional.
@@ -172,34 +242,36 @@ ssh_deploy() {
   if [ -n "$Le_Deploy_ssh_remote_cmd" ]; then
     _cmdstr="$_cmdstr $Le_Deploy_ssh_remote_cmd;"
     _info "Will execute remote command $Le_Deploy_ssh_remote_cmd"
+    if [ "$Le_Deploy_ssh_multi_call" = "yes" ]; then
+      if ! _ssh_remote_cmd "$_cmdstr"; then
+        return $_err_code
+      fi
+      _cmdstr=""
+    fi
   fi
 
-  if [ -z "$_cmdstr" ]; then
-    _err "No remote commands to excute. Failed to deploy certificates to remote server"
-    return 1
-  elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
-    # run cleanup on the backup directory, erase all older
-    # than 180 days (15552000 seconds).
-    _cmdstr="{ now=\"\$(date -u +%s)\"; for fn in $_backupprefix*; \
-do if [ -d \"\$fn\" ] && [ \"\$(expr \$now - \$(date -ur \$fn +%s) )\" -ge \"15552000\" ]; \
-then rm -rf \"\$fn\"; echo \"Backup \$fn deleted as older than 180 days\"; fi; done; }; $_cmdstr"
-    # Alternate version of above... _cmdstr="find $_backupprefix* -type d -mtime +180 2>/dev/null | xargs rm -rf; $_cmdstr"
-    # Create our backup directory for overwritten cert files.
-    _cmdstr="mkdir -p $_backupdir; $_cmdstr"
-    _info "Backup of old certificate files will be placed in remote directory $_backupdir"
-    _info "Backup directories erased after 180 days."
+  # if commands not all sent in multiple calls then all commands sent in a single SSH call now...
+  if [ -n "$_cmdstr" ]; then
+    if ! _ssh_remote_cmd "$_cmdstr"; then
+      return $_err_code
+    fi
   fi
+  return 0
+}
 
-  _secure_debug "Remote commands to execute: " "$_cmdstr"
+#cmd
+_ssh_remote_cmd() {
+  _cmd="$1"
+  _secure_debug "Remote commands to execute: $_cmd"
   _info "Submitting sequence of commands to remote server by ssh"
   # quotations in bash cmd below intended.  Squash travis spellcheck error
   # shellcheck disable=SC2029
-  $Le_Deploy_ssh_cmd -T "$Le_Deploy_ssh_user@$Le_Deploy_ssh_server" sh -c "'$_cmdstr'"
-  _ret="$?"
+  $Le_Deploy_ssh_cmd "$Le_Deploy_ssh_user@$Le_Deploy_ssh_server" sh -c "'$_cmd'"
+  _err_code="$?"
 
-  if [ "$_ret" != "0" ]; then
-    _err "Error code $_ret returned from $Le_Deploy_ssh_cmd"
+  if [ "$_err_code" != "0" ]; then
+    _err "Error code $_err_code returned from ssh"
   fi
 
-  return $_ret
+  return $_err_code
 }
diff --git a/dnsapi/dns_arvan.sh b/dnsapi/dns_arvan.sh
new file mode 100644
index 0000000..edeb56c
--- /dev/null
+++ b/dnsapi/dns_arvan.sh
@@ -0,0 +1,163 @@
+#!/usr/bin/env sh
+
+#Arvan_Token="xxxx"
+
+ARVAN_API_URL="https://napi.arvancloud.com/cdn/4.0/domains"
+
+#Author: Ehsan Aliakbar
+#Report Bugs here: https://github.com/Neilpang/acme.sh 
+#
+########  Public functions #####################
+
+#Usage: dns_arvan_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_arvan_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using Arvan"
+
+  Arvan_Token="${Arvan_Token:-$(_readaccountconf_mutable Arvan_Token)}"
+
+  if [ -z "$Arvan_Token" ]; then
+    _err "You didn't specify \"Arvan_Token\" token yet."
+    _err "You can get yours from here https://npanel.arvancloud.com/profile/api-keys"
+    return 1
+  fi
+  #save the api token to the account conf file.
+  _saveaccountconf_mutable Arvan_Token "$Arvan_Token"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _info "Adding record"
+  if _arvan_rest POST "$_domain/dns-records" "{\"type\":\"TXT\",\"name\":\"$_sub_domain\",\"value\":{\"text\":\"$txtvalue\"},\"ttl\":120}"; then
+    if _contains "$response" "$txtvalue"; then
+      _info "Added, OK"
+      return 0
+    elif _contains "$response" "Record Data is Duplicated"; then
+      _info "Already exists, OK"
+      return 0
+    else
+      _err "Add txt record error."
+      return 1
+    fi
+  fi
+  _err "Add txt record error."
+  return 1
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_arvan_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using Arvan"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  Arvan_Token="${Arvan_Token:-$(_readaccountconf_mutable Arvan_Token)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  shorted_txtvalue=$(printf "%s" "$txtvalue" | cut -d "-" -d "_" -f1)
+  _arvan_rest GET "${_domain}/dns-records?search=$shorted_txtvalue"
+
+  if ! printf "%s" "$response" | grep \"current_page\":1 >/dev/null; then
+    _err "Error on Arvan Api"
+    _err "Please create a github issue with debbug log"
+    return 1
+  fi
+
+  count=$(printf "%s\n" "$response" | _egrep_o "\"total\":[^,]*" | cut -d : -f 2)
+  _debug count "$count"
+  if [ "$count" = "0" ]; then
+    _info "Don't need to remove."
+  else
+    record_id=$(printf "%s\n" "$response" | _egrep_o "\"id\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \" | head -n 1)
+    _debug "record_id" "$record_id"
+    if [ -z "$record_id" ]; then
+      _err "Can not get record id to remove."
+      return 1
+    fi
+    if ! _arvan_rest "DELETE" "${_domain}/dns-records/$record_id"; then
+      _err "Delete record error."
+      return 1
+    fi
+    _debug "$response"
+    _contains "$response" 'dns record deleted'
+  fi
+}
+
+####################  Private functions below ##################################
+
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=sdjkglgdfewsdfg
+_get_root() {
+  domain=$1
+  i=1
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _debug h "$h"
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    if ! _arvan_rest GET "?search=$h"; then
+      return 1
+    fi
+
+    if _contains "$response" "\"domain\":\"$h\"" || _contains "$response" '"total":1'; then
+      _domain_id=$(echo "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
+      if [ "$_domain_id" ]; then
+        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+        _domain=$h
+        return 0
+      fi
+      return 1
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_arvan_rest() {
+  mtd="$1"
+  ep="$2"
+  data="$3"
+
+  token_trimmed=$(echo "$Arvan_Token" | tr -d '"')
+
+  export _H1="Authorization: $token_trimmed"
+
+  if [ "$mtd" = "DELETE" ]; then
+    #DELETE Request shouldn't have Content-Type
+    _debug data "$data"
+    response="$(_post "$data" "$ARVAN_API_URL/$ep" "" "$mtd")"
+  elif [ "$mtd" = "POST" ]; then
+    export _H2="Content-Type: application/json"
+    _debug data "$data"
+    response="$(_post "$data" "$ARVAN_API_URL/$ep" "" "$mtd")"
+  else
+    response="$(_get "$ARVAN_API_URL/$ep$data")"
+  fi
+}
diff --git a/dnsapi/dns_ddnss.sh b/dnsapi/dns_ddnss.sh
index 53781d0..ecc4f17 100644
--- a/dnsapi/dns_ddnss.sh
+++ b/dnsapi/dns_ddnss.sh
@@ -119,7 +119,7 @@ _ddnss_rest() {
 
   # DDNSS uses GET to update domain info
   if [ "$method" = "GET" ]; then
-    response="$(_get "$url" | sed 's/<[a-zA-Z\/][^>]*>//g' | _tail_n 1)"
+    response="$(_get "$url" | sed 's/<[a-zA-Z\/][^>]*>//g' | tr -s "\n" | _tail_n 1)"
   else
     _err "Unsupported method"
     return 1
diff --git a/dnsapi/dns_easydns.sh b/dnsapi/dns_easydns.sh
index ca8faab..f466f1e 100644
--- a/dnsapi/dns_easydns.sh
+++ b/dnsapi/dns_easydns.sh
@@ -4,8 +4,7 @@
 #
 # easyDNS REST API for acme.sh by Neilpang based on dns_cf.sh
 # 
-# Please note: # API is currently beta and subject to constant change
-# http://sandbox.rest.easydns.net:3000/
+# API Documentation: https://sandbox.rest.easydns.net:3001/
 #
 # Author: wurzelpanzer [wurzelpanzer@maximolider.net]
 # Report Bugs here: https://github.com/acmesh-official/acme.sh/issues/2647
@@ -25,7 +24,7 @@ dns_easydns_add() {
   EASYDNS_Key="${EASYDNS_Key:-$(_readaccountconf_mutable EASYDNS_Key)}"
 
   if [ -z "$EASYDNS_Token" ] || [ -z "$EASYDNS_Key" ]; then
-    _err "You didn't specify an easydns.net token or api key. Please sign up at http://docs.sandbox.rest.easydns.net/beta_signup.php"
+    _err "You didn't specify an easydns.net token or api key. Signup at https://cp.easydns.com/manage/security/api/signup.php"
     return 1
   else
     _saveaccountconf_mutable EASYDNS_Token "$EASYDNS_Token"
diff --git a/dnsapi/dns_he.sh b/dnsapi/dns_he.sh
index caa4d2c..5829e00 100755
--- a/dnsapi/dns_he.sh
+++ b/dnsapi/dns_he.sh
@@ -24,7 +24,7 @@ dns_he_add() {
   if [ -z "$HE_Username" ] || [ -z "$HE_Password" ]; then
     HE_Username=
     HE_Password=
-    _err "No auth details provided. Please set user credentials using the \$HE_Username and \$HE_Password envoronment variables."
+    _err "No auth details provided. Please set user credentials using the \$HE_Username and \$HE_Password environment variables."
     return 1
   fi
   _saveaccountconf_mutable HE_Username "$HE_Username"
diff --git a/dnsapi/dns_inwx.sh b/dnsapi/dns_inwx.sh
index 7c08d72..50b4b10 100755
--- a/dnsapi/dns_inwx.sh
+++ b/dnsapi/dns_inwx.sh
@@ -34,6 +34,10 @@ dns_inwx_add() {
   _saveaccountconf_mutable INWX_Password "$INWX_Password"
   _saveaccountconf_mutable INWX_Shared_Secret "$INWX_Shared_Secret"
 
+  if ! _inwx_login; then
+    return 1
+  fi
+
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
     _err "invalid domain"
@@ -64,6 +68,10 @@ dns_inwx_rm() {
     return 1
   fi
 
+  if ! _inwx_login; then
+    return 1
+  fi
+
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
     _err "invalid domain"
@@ -123,8 +131,42 @@ dns_inwx_rm() {
 
 ####################  Private functions below ##################################
 
+_inwx_check_cookie() {
+  INWX_Cookie="${INWX_Cookie:-$(_readaccountconf_mutable INWX_Cookie)}"
+  if [ -z "$INWX_Cookie" ]; then
+    _debug "No cached cookie found"
+    return 1
+  fi
+  _H1="$INWX_Cookie"
+  export _H1
+
+  xml_content=$(printf '<?xml version="1.0" encoding="UTF-8"?>
+  <methodCall>
+  <methodName>account.info</methodName>
+  </methodCall>')
+
+  response="$(_post "$xml_content" "$INWX_Api" "" "POST")"
+
+  if _contains "$response" "<member><name>code</name><value><int>1000</int></value></member>"; then
+    _debug "Cached cookie still valid"
+    return 0
+  fi
+
+  _debug "Cached cookie no longer valid"
+  _H1=""
+  export _H1
+  INWX_Cookie=""
+  _saveaccountconf_mutable INWX_Cookie "$INWX_Cookie"
+  return 1
+}
+
 _inwx_login() {
 
+  if _inwx_check_cookie; then
+    _debug "Already logged in"
+    return 0
+  fi
+
   xml_content=$(printf '<?xml version="1.0" encoding="UTF-8"?>
   <methodCall>
   <methodName>account.login</methodName>
@@ -148,17 +190,25 @@ _inwx_login() {
     </value>
    </param>
   </params>
-  </methodCall>' $INWX_User $INWX_Password)
+  </methodCall>' "$INWX_User" "$INWX_Password")
 
   response="$(_post "$xml_content" "$INWX_Api" "" "POST")"
-  _H1=$(printf "Cookie: %s" "$(grep "domrobot=" "$HTTP_HEADER" | grep "^Set-Cookie:" | _tail_n 1 | _egrep_o 'domrobot=[^;]*;' | tr -d ';')")
+
+  INWX_Cookie=$(printf "Cookie: %s" "$(grep "domrobot=" "$HTTP_HEADER" | grep "^Set-Cookie:" | _tail_n 1 | _egrep_o 'domrobot=[^;]*;' | tr -d ';')")
+  _H1=$INWX_Cookie
   export _H1
+  export INWX_Cookie
+  _saveaccountconf_mutable INWX_Cookie "$INWX_Cookie"
+
+  if ! _contains "$response" "<member><name>code</name><value><int>1000</int></value></member>"; then
+    _err "INWX API: Authentication error (username/password correct?)"
+    return 1
+  fi
 
   #https://github.com/inwx/php-client/blob/master/INWX/Domrobot.php#L71
-  if _contains "$response" "<member><name>code</name><value><int>1000</int></value></member>" \
-    && _contains "$response" "<member><name>tfa</name><value><string>GOOGLE-AUTH</string></value></member>"; then
+  if _contains "$response" "<member><name>tfa</name><value><string>GOOGLE-AUTH</string></value></member>"; then
     if [ -z "$INWX_Shared_Secret" ]; then
-      _err "Mobile TAN detected."
+      _err "INWX API: Mobile TAN detected."
       _err "Please define a shared secret."
       return 1
     fi
@@ -191,6 +241,11 @@ _inwx_login() {
     </methodCall>' "$tan")
 
     response="$(_post "$xml_content" "$INWX_Api" "" "POST")"
+
+    if ! _contains "$response" "<member><name>code</name><value><int>1000</int></value></member>"; then
+      _err "INWX API: Mobile TAN not correct."
+      return 1
+    fi
   fi
 
 }
@@ -203,8 +258,6 @@ _get_root() {
   i=2
   p=1
 
-  _inwx_login
-
   xml_content='<?xml version="1.0" encoding="UTF-8"?>
   <methodCall>
   <methodName>nameserver.list</methodName>
diff --git a/dnsapi/dns_one.sh b/dnsapi/dns_one.sh
index 0fdc3d5..96ef596 100644
--- a/dnsapi/dns_one.sh
+++ b/dnsapi/dns_one.sh
@@ -5,8 +5,11 @@
 # Author: github: @diseq
 # Created: 2019-02-17
 # Fixed by: @der-berni
-# Modified: 2019-05-31
-#
+# Modified: 2020-04-07
+#     
+#     Use ONECOM_KeepCnameProxy to keep the CNAME DNS record
+#     export ONECOM_KeepCnameProxy="1"
+#     
 #     export ONECOM_User="username"
 #     export ONECOM_Password="password"
 #
@@ -30,32 +33,45 @@ dns_one_add() {
     return 1
   fi
 
-  mysubdomain=$_sub_domain
-  mydomain=$_domain
-  _debug mysubdomain "$mysubdomain"
-  _debug mydomain "$mydomain"
+  subdomain="${_sub_domain}"
+  maindomain=${_domain}
 
-  # get entries
-  response="$(_get "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records")"
-  _debug response "$response"
+  useProxy=0
+  if [ "${_sub_domain}" = "_acme-challenge" ]; then
+    subdomain="proxy${_sub_domain}"
+    useProxy=1
+  fi
 
-  # Update the IP address for domain entry
-  postdata="{\"type\":\"dns_custom_records\",\"attributes\":{\"priority\":0,\"ttl\":600,\"type\":\"TXT\",\"prefix\":\"$mysubdomain\",\"content\":\"$txtvalue\"}}"
-  _debug postdata "$postdata"
-  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records" "" "POST" "application/json")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
+  _debug subdomain "$subdomain"
+  _debug maindomain "$maindomain"
+
+  if [ $useProxy -eq 1 ]; then
+    #Check if the CNAME exists
+    _dns_one_getrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
+    if [ -z "$id" ]; then
+      _info "$(__red "Add CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+      _dns_one_addrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
 
-  id=$(echo "$response" | sed -n "s/{\"result\":{\"data\":{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$mysubdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}}},\"metadata\":null}/\1/p")
+      _info "Not valid yet, let's wait 1 hour to take effect."
+      _sleep 3600
+    fi
+  fi
 
+  #Check if the TXT exists
+  _dns_one_getrecord "TXT" "$subdomain" "$txtvalue"
+  if [ -n "$id" ]; then
+    _info "$(__green "Txt record with the same value found. Skip adding.")"
+    return 0
+  fi
+
+  _dns_one_addrecord "TXT" "$subdomain" "$txtvalue"
   if [ -z "$id" ]; then
-    _err "Add txt record error."
+    _err "Add TXT record error."
     return 1
   else
-    _info "Added, OK ($id)"
+    _info "$(__green "Added, OK ($id)")"
     return 0
   fi
-
 }
 
 dns_one_rm() {
@@ -73,36 +89,45 @@ dns_one_rm() {
     return 1
   fi
 
-  mysubdomain=$_sub_domain
-  mydomain=$_domain
-  _debug mysubdomain "$mysubdomain"
-  _debug mydomain "$mydomain"
+  subdomain="${_sub_domain}"
+  maindomain=${_domain}
 
-  # get entries
-  response="$(_get "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
+  useProxy=0
+  if [ "${_sub_domain}" = "_acme-challenge" ]; then
+    subdomain="proxy${_sub_domain}"
+    useProxy=1
+  fi
 
-  id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$mysubdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  _debug subdomain "$subdomain"
+  _debug maindomain "$maindomain"
+  if [ $useProxy -eq 1 ]; then
+    if [ "$ONECOM_KeepCnameProxy" = "1" ]; then
+      _info "$(__red "Keeping CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+    else
+      #Check if the CNAME exists
+      _dns_one_getrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
+      if [ -n "$id" ]; then
+        _info "$(__red "Removing CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+        _dns_one_delrecord "$id"
+      fi
+    fi
+  fi
 
+  #Check if the TXT exists
+  _dns_one_getrecord "TXT" "$subdomain" "$txtvalue"
   if [ -z "$id" ]; then
     _err "Txt record not found."
     return 1
   fi
 
   # delete entry
-  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records/$id" "" "DELETE" "application/json")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
-
-  if [ "$response" = '{"result":null,"metadata":null}' ]; then
-    _info "Removed, OK"
+  if _dns_one_delrecord "$id"; then
+    _info "$(__green Removed, OK)"
     return 0
   else
     _err "Removing txt record error."
     return 1
   fi
-
 }
 
 #_acme-challenge.www.domain.com
@@ -138,6 +163,8 @@ _get_root() {
 _dns_one_login() {
 
   # get credentials
+  ONECOM_KeepCnameProxy="${ONECOM_KeepCnameProxy:-$(_readaccountconf_mutable ONECOM_KeepCnameProxy)}"
+  ONECOM_KeepCnameProxy="${ONECOM_KeepCnameProxy:-0}"
   ONECOM_User="${ONECOM_User:-$(_readaccountconf_mutable ONECOM_User)}"
   ONECOM_Password="${ONECOM_Password:-$(_readaccountconf_mutable ONECOM_Password)}"
   if [ -z "$ONECOM_User" ] || [ -z "$ONECOM_Password" ]; then
@@ -149,6 +176,7 @@ _dns_one_login() {
   fi
 
   #save the api key and email to the account conf file.
+  _saveaccountconf_mutable ONECOM_KeepCnameProxy "$ONECOM_KeepCnameProxy"
   _saveaccountconf_mutable ONECOM_User "$ONECOM_User"
   _saveaccountconf_mutable ONECOM_Password "$ONECOM_Password"
 
@@ -177,3 +205,75 @@ _dns_one_login() {
 
   return 0
 }
+
+_dns_one_getrecord() {
+  type="$1"
+  name="$2"
+  value="$3"
+  if [ -z "$type" ]; then
+    type="TXT"
+  fi
+  if [ -z "$name" ]; then
+    _err "Record name is empty."
+    return 1
+  fi
+
+  response="$(_get "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  if [ -z "${value}" ]; then
+    id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"[^\"]*\",\"priority\":0,\"ttl\":600}.*/\1/p")
+    response=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"[^\"]*\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"\([^\"]*\)\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  else
+    id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"${value}\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  fi
+  if [ -z "$id" ]; then
+    return 1
+  fi
+  return 0
+}
+
+_dns_one_addrecord() {
+  type="$1"
+  name="$2"
+  value="$3"
+  if [ -z "$type" ]; then
+    type="TXT"
+  fi
+  if [ -z "$name" ]; then
+    _err "Record name is empty."
+    return 1
+  fi
+
+  postdata="{\"type\":\"dns_custom_records\",\"attributes\":{\"priority\":0,\"ttl\":600,\"type\":\"${type}\",\"prefix\":\"${name}\",\"content\":\"${value}\"}}"
+  _debug postdata "$postdata"
+  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records" "" "POST" "application/json")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  id=$(echo "$response" | sed -n "s/{\"result\":{\"data\":{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$subdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}}},\"metadata\":null}/\1/p")
+
+  if [ -z "$id" ]; then
+    return 1
+  else
+    return 0
+  fi
+}
+
+_dns_one_delrecord() {
+  id="$1"
+  if [ -z "$id" ]; then
+    return 1
+  fi
+
+  response="$(_post "" "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records/$id" "" "DELETE" "application/json")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  if [ "$response" = '{"result":null,"metadata":null}' ]; then
+    return 0
+  else
+    return 1
+  fi
+}
diff --git a/dnsapi/dns_opnsense.sh b/dnsapi/dns_opnsense.sh
index b2a3746..ec7d227 100755
--- a/dnsapi/dns_opnsense.sh
+++ b/dnsapi/dns_opnsense.sh
@@ -150,7 +150,7 @@ _get_root() {
       return 1
     fi
     _debug h "$h"
-    id=$(echo "$_domain_response" | _egrep_o "\"[^\"]*\":{\"enabled\":\"1\",\"type\":{\"master\":{\"value\":\"master\",\"selected\":1},\"slave\":{\"value\":\"slave\",\"selected\":0}},\"masterip\":\"[^\"]*\",\"domainname\":\"${h}\"" | cut -d ':' -f 1 | cut -d '"' -f 2)
+    id=$(echo "$_domain_response" | _egrep_o "\"[^\"]*\":{\"enabled\":\"1\",\"type\":{\"master\":{\"value\":\"master\",\"selected\":1},\"slave\":{\"value\":\"slave\",\"selected\":0}},\"masterip\":\"[^\"]*\",\"allownotifyslave\":{\"\":{[^}]*}},\"domainname\":\"${h}\"" | cut -d ':' -f 1 | cut -d '"' -f 2)
 
     if [ -n "$id" ]; then
       _debug id "$id"
diff --git a/notify/mail.sh b/notify/mail.sh
index ec9aa0d..54b2a6d 100644
--- a/notify/mail.sh
+++ b/notify/mail.sh
@@ -6,6 +6,7 @@
 #MAIL_FROM="yyyy@gmail.com"
 #MAIL_TO="yyyy@gmail.com"
 #MAIL_NOVALIDATE=""
+#MAIL_MSMTP_ACCOUNT=""
 
 mail_send() {
   _subject="$1"
@@ -76,18 +77,17 @@ mail_send() {
 }
 
 _mail_bin() {
-  if [ -n "$MAIL_BIN" ]; then
-    _MAIL_BIN="$MAIL_BIN"
-  elif _exists "sendmail"; then
-    _MAIL_BIN="sendmail"
-  elif _exists "ssmtp"; then
-    _MAIL_BIN="ssmtp"
-  elif _exists "mutt"; then
-    _MAIL_BIN="mutt"
-  elif _exists "mail"; then
-    _MAIL_BIN="mail"
-  else
-    _err "Please install sendmail, ssmtp, mutt or mail first."
+  _MAIL_BIN=""
+
+  for b in "$MAIL_BIN" sendmail ssmtp mutt mail msmtp; do
+    if _exists "$b"; then
+      _MAIL_BIN="$b"
+      break
+    fi
+  done
+
+  if [ -z "$_MAIL_BIN" ]; then
+    _err "Please install sendmail, ssmtp, mutt, mail or msmtp first."
     return 1
   fi
 
@@ -95,30 +95,35 @@ _mail_bin() {
 }
 
 _mail_cmnd() {
+  _MAIL_ARGS=""
+
   case $(basename "$_MAIL_BIN") in
     sendmail)
       if [ -n "$MAIL_FROM" ]; then
-        echo "'$_MAIL_BIN' -f '$MAIL_FROM' '$MAIL_TO'"
-      else
-        echo "'$_MAIL_BIN' '$MAIL_TO'"
+        _MAIL_ARGS="-f '$MAIL_FROM'"
       fi
       ;;
-    ssmtp)
-      echo "'$_MAIL_BIN' '$MAIL_TO'"
-      ;;
     mutt | mail)
-      echo "'$_MAIL_BIN' -s '$_subject' '$MAIL_TO'"
+      _MAIL_ARGS="-s '$_subject'"
       ;;
-    *)
-      _err "Command $MAIL_BIN is not supported, use sendmail, ssmtp, mutt or mail."
-      return 1
+    msmtp)
+      if [ -n "$MAIL_FROM" ]; then
+        _MAIL_ARGS="-f '$MAIL_FROM'"
+      fi
+
+      if [ -n "$MAIL_MSMTP_ACCOUNT" ]; then
+        _MAIL_ARGS="$_MAIL_ARGS -a '$MAIL_MSMTP_ACCOUNT'"
+      fi
       ;;
+    *) ;;
   esac
+
+  echo "'$_MAIL_BIN' $_MAIL_ARGS '$MAIL_TO'"
 }
 
 _mail_body() {
   case $(basename "$_MAIL_BIN") in
-    sendmail | ssmtp)
+    sendmail | ssmtp | msmtp)
       if [ -n "$MAIL_FROM" ]; then
         echo "From: $MAIL_FROM"
       fi