1.8.154

Fixed

• Fixed SMTP authentication not working in some cases due to setAuthMode() used in Swiftmailer - the issue has been introduced in v1.8.144 release (#4253)
• Fixed "null given" error in getMessageNumber() function (#4257)
• Check if current user is deleted on user's Permissions and Notifications pages.

Changed

• Improved the email search by Message-Id in the "Show Original" window (#4266)
• Improved connection sleep time selection when fetching emails to avoid "connection setup failed" error (#4227)