Acelle Email Marketing Web Application 4.0.26-p87

* Added: support changing DKIM selector
* Added: choose sending server's default FROM header
* Fixed: embedded form broken
* Fixed: date/time field issue
* Fixed: import cancel issue
* Fixed: export UID and STATUS values
* Fixed: XSS thread with campaign email

* Added: domain verification
* Added: DKIM verification
* Added: SPF verification
* Added: support tracking domain
* Fixed: campaign does not send to all contacts
* Fixed: upload manager fails to check file size

* Fixed: everifier.org compatibility issue
* Fixed: AWS SNS rate limit issue
* Fixed: import issue with uppercase email address
* Fixed: automation issue with unsubscribed contacts
* Fixed: feedback log not showing up correctly
* Fixed: Reply-To header is now required for SendGrid
* Fixed: moving subscribers issue
* Fixed: subscribers filtering issue
* Fixed: Return-Path header not set correctly
* Changed: remove plain text online viewer