Hi,
There appears to be an issue with Gmail.
When you run the setup test, it will some times work, but not always!
You have to log in to Gmail and check whether it has recorded it as suspicious activity…
In my case I jumped through this hoop which then seemed to work for the diagnostic emails, however, when I tried the test newsletter I found it had “bounced”. You can read more about it here:
https://support.google.com/mail/answer/69585
I’ve ended up using a different SMTP Image may be NSFW.
Clik here to view.
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