diff --git a/deploy/dovecot.sh b/deploy/dovecot.sh
index 3baf23d9..6edc9520 100644
--- a/deploy/dovecot.sh
+++ b/deploy/dovecot.sh
@@ -1,26 +1,112 @@
-#!/usr/bin/env sh
-
-#Here is a script to deploy cert to dovecot server.
-
-#returns 0 means success, otherwise error.
-
-########  Public functions #####################
-
-#domain keyfile certfile cafile fullchain
-dovecot_deploy() {
-  _cdomain="$1"
-  _ckey="$2"
-  _ccert="$3"
-  _cca="$4"
-  _cfullchain="$5"
-
-  _debug _cdomain "$_cdomain"
-  _debug _ckey "$_ckey"
-  _debug _ccert "$_ccert"
-  _debug _cca "$_cca"
-  _debug _cfullchain "$_cfullchain"
-
-  _err "Not implemented yet"
-  return 1
-
-}
+#!/usr/bin/env sh
+
+#Here is a script to deploy cert to dovecot servers.
+
+#returns 0 means success, otherwise error.
+
+#DEFAULT_DOVECOT_RELOAD="service dovecot restart"
+#DEFAULT_DOVECOT_CONF="/etc/dovecot/dovecot.conf"
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+dovecot_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+
+  _ssl_path="/etc/acme.sh/dovecot"
+  if ! mkdir -p "$_ssl_path"; then
+    _err "Can not create folder:$_ssl_path"
+    return 1
+  fi
+
+  _info "Copying key and cert"
+  _real_key="$_ssl_path/dovecot.key"
+  if ! cat "$_ckey" >"$_real_key"; then
+    _err "Error: write key file to: $_real_key"
+    return 1
+  fi
+  _real_fullchain="$_ssl_path/dovecot.chain.pem"
+  if ! cat "$_cfullchain" >"$_real_fullchain"; then
+    _err "Error: write key file to: $_real_fullchain"
+    return 1
+  fi
+
+  DEFAULT_DOVECOT_RELOAD="service dovecot restart"
+  _reload_dovecot="${DEPLOY_DOVECOT_RELOAD:-$DEFAULT_DOVECOT_RELOAD}"
+
+  if [ -z "$IS_RENEW" ]; then
+    DEFAULT_DOVECOT_CONF="/etc/dovecot/dovecot.conf"
+    _dovecot_conf="${DEPLOY_DOVECOT_CONF:-$DEFAULT_DOVECOT_CONF}"
+
+    if [ ! -f "$_dovecot_conf" ]; then
+      if [ -z "$DEPLOY_DOVECOT_CONF" ]; then
+        _err "dovecot conf is not found, please define DEPLOY_DOVECOT_CONF"
+        return 1
+      else
+        _err "It seems that the specified dovecot conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_dovecot_conf" ]; then
+      _err "The file $_dovecot_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_dovecot_conf="$DOMAIN_BACKUP_PATH/dovecot.conf.bak"
+    _info "Backup $_dovecot_conf to $_backup_dovecot_conf"
+    cp "$_dovecot_conf" "$_backup_dovecot_conf"
+
+    # dovecot needs the input redirectors ("<") before the filenames here
+    _info "Modify dovecot conf: $_dovecot_conf"
+    if _setopt "$_dovecot_conf" "ssl_cert" "=" "<$_real_fullchain" \
+      && _setopt "$_dovecot_conf" "ssl_key" "=" "<$_real_key" \
+      && _setopt "$_dovecot_conf" "ssl" "=" "required"; then
+      _info "Set config success!"
+    else
+      _err "Config dovecot server error, please report bug to us."
+      _info "Restoring dovecot conf"
+      if cat "$_backup_dovecot_conf" >"$_dovecot_conf"; then
+        _info "Restore conf success"
+        eval "$_reload_dovecot"
+      else
+        _err "Oops, error restore dovecot conf, please report bug to us."
+      fi
+      return 1
+    fi
+  fi
+
+  _info "Run reload: $_reload_dovecot"
+  if eval "$_reload_dovecot"; then
+    _info "Reload success!"
+    if [ "$DEPLOY_DOVECOT_CONF" ]; then
+      _savedomainconf DEPLOY_DOVECOT_CONF "$DEPLOY_DOVECOT_CONF"
+    else
+      _cleardomainconf DEPLOY_DOVECOT_CONF
+    fi
+    if [ "$DEPLOY_DOVECOT_RELOAD" ]; then
+      _savedomainconf DEPLOY_DOVECOT_RELOAD "$DEPLOY_DOVECOT_RELOAD"
+    else
+      _cleardomainconf DEPLOY_DOVECOT_RELOAD
+    fi
+    return 0
+  else
+    _err "Reload error, restoring conf"
+    if cat "$_backup_dovecot_conf" >"$_dovecot_conf"; then
+      _info "Restore dovecot conf success"
+      eval "$_reload_dovecot"
+    else
+      _err "Oops, error restoring dovecot conf, please report bug to us."
+    fi
+    return 1
+  fi
+  return 0
+}
diff --git a/deploy/postfix-and-dovecot.sh b/deploy/postfix-and-dovecot.sh
new file mode 100644
index 00000000..1b282878
--- /dev/null
+++ b/deploy/postfix-and-dovecot.sh
@@ -0,0 +1,180 @@
+#!/usr/bin/env sh
+
+#Here is a script to deploy cert to postfix and dovecot servers, when
+#they use the same certificate (e.g., when both are on the same host or 
+#use the same hostname).
+
+#returns 0 means success, otherwise error.
+
+#DEFAULT_POSTFIX_RELOAD="service postfix restart"
+#DEFAULT_DOVECOT_RELOAD="service dovecot restart"
+
+#DEFAULT_POSTFIX_CONF="/etc/postfix/main.cf"
+#DEFAULT_DOVECOT_CONF="/etc/dovecot/dovecot.conf"
+
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+postfix-and-dovecot_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+
+  _ssl_path="/etc/acme.sh/postfix-and-dovecot"
+  if ! mkdir -p "$_ssl_path"; then
+    _err "Can not create folder:$_ssl_path"
+    return 1
+  fi
+
+  _info "Copying key and cert"
+  _real_key="$_ssl_path/postfix-and-dovecot.key"
+  if ! cat "$_ckey" >"$_real_key"; then
+    _err "Error: write key file to: $_real_key"
+    return 1
+  fi
+  _real_fullchain="$_ssl_path/postfix-and-dovecot.chain.pem"
+  if ! cat "$_cfullchain" >"$_real_fullchain"; then
+    _err "Error: write key file to: $_real_fullchain"
+    return 1
+  fi
+
+  DEFAULT_POSTFIX_RELOAD="service postfix restart"
+  _reload_postfix="${DEPLOY_POSTFIX_RELOAD:-$DEFAULT_POSTFIX_RELOAD}"
+
+  DEFAULT_DOVECOT_RELOAD="service dovecot restart"
+  _reload_dovecot="${DEPLOY_DOVECOT_RELOAD:-$DEFAULT_DOVECOT_RELOAD}"
+
+  if [ -z "$IS_RENEW" ]; then
+    DEFAULT_POSTFIX_CONF="/etc/postfix/main.cf"
+    DEFAULT_DOVECOT_CONF="/etc/dovecot/dovecot.conf"
+    _postfix_conf="${DEPLOY_POSTFIX_CONF:-$DEFAULT_POSTFIX_CONF}"
+    _dovecot_conf="${DEPLOY_DOVECOT_CONF:-$DEFAULT_DOVECOT_CONF}"
+
+    # postfix first
+    if [ ! -f "$_postfix_conf" ]; then
+      if [ -z "$DEPLOY_POSTFIX_CONF" ]; then
+        _err "postfix conf is not found, please define DEPLOY_POSTFIX_CONF"
+        return 1
+      else
+        _err "It seems that the specified postfix conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_postfix_conf" ]; then
+      _err "The file $_postfix_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_postfix_conf="$DOMAIN_BACKUP_PATH/postfix.conf.bak"
+    _info "Backup $_postfix_conf to $_backup_postfix_conf"
+    cp "$_postfix_conf" "$_backup_postfix_conf"
+
+    _info "Modify postfix conf: $_postfix_conf"
+    if _setopt "$_postfix_conf" "smtpd_tls_cert_file" "=" "$_real_fullchain" \
+      && _setopt "$_postfix_conf" "smtpd_tls_key_file" "=" "$_real_key" \
+      && _setopt "$_postfix_conf" "smtpd_use_tls" "=" "yes" \
+      && _setopt "$_postfix_conf" "smtpd_tls_security_level" "=" "may"; then
+      _info "Set config success!"
+    else
+      _err "Config postfix server error, please report bug to us."
+      _info "Restoring postfix conf"
+      if cat "$_backup_postfix_conf" >"$_postfix_conf"; then
+        _info "Restore conf success"
+        eval "$_reload_postfix"
+      else
+        _err "Oops, error restore postfix conf, please report bug to us."
+      fi
+      return 1
+    fi
+
+    # now dovecot
+    if [ ! -f "$_dovecot_conf" ]; then
+      if [ -z "$DEPLOY_DOVECOT_CONF" ]; then
+        _err "dovecot conf is not found, please define DEPLOY_DOVECOT_CONF"
+        return 1
+      else
+        _err "It seems that the specified dovecot conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_dovecot_conf" ]; then
+      _err "The file $_dovecot_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_dovecot_conf="$DOMAIN_BACKUP_PATH/dovecot.conf.bak"
+    _info "Backup $_dovecot_conf to $_backup_dovecot_conf"
+    cp "$_dovecot_conf" "$_backup_dovecot_conf"
+
+    # dovecot needs the input redirectors ("<") before the filenames here
+    _info "Modify dovecot conf: $_dovecot_conf"
+    if _setopt "$_dovecot_conf" "ssl_cert" "=" "<$_real_fullchain" \
+      && _setopt "$_dovecot_conf" "ssl_key" "=" "<$_real_key" \
+      && _setopt "$_dovecot_conf" "ssl" "=" "required"; then
+      _info "Set config success!"
+    else
+      _err "Config dovecot server error, please report bug to us."
+      _info "Restoring dovecot conf"
+      if cat "$_backup_dovecot_conf" >"$_dovecot_conf"; then
+        _info "Restore conf success"
+        eval "$_reload_dovecot"
+      else
+        _err "Oops, error restore dovecot conf, please report bug to us."
+      fi
+      return 1
+    fi
+  fi
+
+  _info "Run reload: $_reload_postfix && $_reload_dovecot"
+  if eval "$_reload_postfix && $_reload_dovecot"; then
+    _info "Reload success!"
+    if [ "$DEPLOY_POSTFIX_CONF" ]; then
+      _savedomainconf DEPLOY_POSTFIX_CONF "$DEPLOY_POSTFIX_CONF"
+    else
+      _cleardomainconf DEPLOY_POSTFIX_CONF
+    fi
+    if [ "$DEPLOY_POSTFIX_RELOAD" ]; then
+      _savedomainconf DEPLOY_POSTFIX_RELOAD "$DEPLOY_POSTFIX_RELOAD"
+    else
+      _cleardomainconf DEPLOY_POSTFIX_RELOAD
+    fi
+    return 0
+
+    if [ "$DEPLOY_DOVECOT_CONF" ]; then
+      _savedomainconf DEPLOY_DOVECOT_CONF "$DEPLOY_DOVECOT_CONF"
+    else
+      _cleardomainconf DEPLOY_DOVECOT_CONF
+    fi
+    if [ "$DEPLOY_DOVECOT_RELOAD" ]; then
+      _savedomainconf DEPLOY_DOVECOT_RELOAD "$DEPLOY_DOVECOT_RELOAD"
+    else
+      _cleardomainconf DEPLOY_DOVECOT_RELOAD
+    fi
+    return 0
+  else
+    _err "Reload error, restoring conf"
+    if cat "$_backup_postfix_conf" >"$_postfix_conf"; then
+      _info "Restore postfox conf success"
+      eval "$_reload_postfix"
+    else
+      _err "Oops, error restoring postfix conf, please report bug to us."
+    fi
+    return 1
+
+    if cat "$_backup_dovecot_conf" >"$_dovecot_conf"; then
+      _info "Restore dovecot conf success"
+      eval "$_reload_dovecot"
+    else
+      _err "Oops, error restoring dovecot conf, please report bug to us."
+    fi
+    return 1
+  fi
+  return 0
+}
diff --git a/deploy/postfix.sh b/deploy/postfix.sh
new file mode 100644
index 00000000..3a43b107
--- /dev/null
+++ b/deploy/postfix.sh
@@ -0,0 +1,113 @@
+#!/usr/bin/env sh
+
+#Here is a script to deploy cert to postfix servers.
+
+#returns 0 means success, otherwise error.
+
+#DEFAULT_POSTFIX_RELOAD="service postfix restart"
+#DEFAULT_POSTFIX_CONF="/etc/postfix/main.cf"
+
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+postfix_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+
+  _ssl_path="/etc/acme.sh/postfix"
+  if ! mkdir -p "$_ssl_path"; then
+    _err "Can not create folder:$_ssl_path"
+    return 1
+  fi
+
+  _info "Copying key and cert"
+  _real_key="$_ssl_path/postfix.key"
+  if ! cat "$_ckey" >"$_real_key"; then
+    _err "Error: write key file to: $_real_key"
+    return 1
+  fi
+  _real_fullchain="$_ssl_path/postfix.chain.pem"
+  if ! cat "$_cfullchain" >"$_real_fullchain"; then
+    _err "Error: write key file to: $_real_fullchain"
+    return 1
+  fi
+
+  DEFAULT_POSTFIX_RELOAD="service postfix restart"
+  _reload_postfix="${DEPLOY_POSTFIX_RELOAD:-$DEFAULT_POSTFIX_RELOAD}"
+
+  if [ -z "$IS_RENEW" ]; then
+    DEFAULT_POSTFIX_CONF="/etc/postfix/main.cf"
+    _postfix_conf="${DEPLOY_POSTFIX_CONF:-$DEFAULT_POSTFIX_CONF}"
+
+    if [ ! -f "$_postfix_conf" ]; then
+      if [ -z "$DEPLOY_POSTFIX_CONF" ]; then
+        _err "postfix conf is not found, please define DEPLOY_POSTFIX_CONF"
+        return 1
+      else
+        _err "It seems that the specified postfix conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_postfix_conf" ]; then
+      _err "The file $_postfix_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_postfix_conf="$DOMAIN_BACKUP_PATH/postfix.conf.bak"
+    _info "Backup $_postfix_conf to $_backup_postfix_conf"
+    cp "$_postfix_conf" "$_backup_postfix_conf"
+
+    _info "Modify postfix conf: $_postfix_conf"
+    if _setopt "$_postfix_conf" "smtpd_tls_cert_file" "=" "$_real_fullchain" \
+      && _setopt "$_postfix_conf" "smtpd_tls_key_file" "=" "$_real_key" \
+      && _setopt "$_postfix_conf" "smtpd_use_tls" "=" "yes" \
+      && _setopt "$_postfix_conf" "smtpd_tls_security_level" "=" "may"; then
+      _info "Set config success!"
+    else
+      _err "Config postfix server error, please report bug to us."
+      _info "Restoring postfix conf"
+      if cat "$_backup_postfix_conf" >"$_postfix_conf"; then
+        _info "Restore conf success"
+        eval "$_reload_postfix"
+      else
+        _err "Oops, error restore postfix conf, please report bug to us."
+      fi
+      return 1
+    fi
+  fi
+
+  _info "Run reload: $_reload_postfix"
+  if eval "$_reload_postfix"; then
+    _info "Reload success!"
+    if [ "$DEPLOY_POSTFIX_CONF" ]; then
+      _savedomainconf DEPLOY_POSTFIX_CONF "$DEPLOY_POSTFIX_CONF"
+    else
+      _cleardomainconf DEPLOY_POSTFIX_CONF
+    fi
+    if [ "$DEPLOY_POSTFIX_RELOAD" ]; then
+      _savedomainconf DEPLOY_POSTFIX_RELOAD "$DEPLOY_POSTFIX_RELOAD"
+    else
+      _cleardomainconf DEPLOY_POSTFIX_RELOAD
+    fi
+    return 0
+  else
+    _err "Reload error, restoring conf"
+    if cat "$_backup_postfix_conf" >"$_postfix_conf"; then
+      _info "Restore postfox conf success"
+      eval "$_reload_postfix"
+    else
+      _err "Oops, error restoring postfix conf, please report bug to us."
+    fi
+    return 1
+  fi
+  return 0
+}