CiviMail setting to use Google's smtp servers - this is not an issue but info if you are having issues with google smtp
This is not an issue but info for others if you are having problems setting up CiviMail to send mail thru Google SMTP service.
We use a Gsuite account for our mail. We setup 3x email accounts on Gsuite to catch the bounce, an email account to send from and email to activity account.
After much trial and error and reading all the posts on CivMail to Google issues, the setting that worked for us is as follows:-
we send under 500 emails weekly from a Civi mailing list.
Settings - for CiviMail
Mailer Batch limit = 100 Mailer throttle Time =1000000 (micro secs) Mailer Job size =0 Mailer Cron Job limit =0 very separator = . Enable custom reply to =no
Cron was setup to execute job.execute every 5 mins (*/5 * * * * etc) Cron was setup to execute fetch bounces on the hour (0 * * * * etc)
We sent 460 emails in just under 25mins as mail was sent in 100 email batches every 5 mins. Speed of email delivery is not important for us as it is just a weekly newsletter.
Bounces was recorded in Civi reports correctly.
I hope that this helps someone.