Are you getting other email notifications from the CMS?
I was having an issue with email in 4.4.2, but it seems to be fixed in 4.4.4. Mail sending stopped working - M365 Mail SMTP
Are you getting other email notifications from the CMS?
I was having an issue with email in 4.4.2, but it seems to be fixed in 4.4.4. Mail sending stopped working - M365 Mail SMTP