Please Read Before Post!

Hi,

Here I will try to answer the most common issues you may have while using Post SMTP.

Server Requirements
Post SMTP require minimal version of PHP 5.6.
As I write this Post SMTP worked without any issues with PHP 7.4

General:

• Configure credentials inside wp-config.php
• Invalid “To” or “Reply-To” Address
• Bad HELO – Host impersonating

Gmail

• How to Send Email from Alias/Another Gmail Address With Gsuite/Google Apps

OFFICE365:

• STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied