Solution: - Requires editing the source code
If you are still having the SMTP issue with the Worksuite Saas version where your transaction emails are not delivered because the from email is set to tenant company email - which could be from any domain, while you transaction email provider only delivers the emails from an authorized address on your application domain. Here is what i had to do to fix it:
LINE 53 on app/Notifications/BaseNotifications.php
This is where it checks if the company has email and overrides the from email from SMTP setting that is set on LINE 41, to company email as the from address.
LINE 53 SHOULD LOOK LIKE SEE AFTER
// $replyEmail = $company->company_email;
Hope that helps