After some users have had issues recently, I’ve finally gotten around to putting in place a better solution for outbound email from this instance. It now sends out via Amazon SES, rather than directly from our OVH VPS.
The result is emails should actually get to more people now, rather than being blocked by over-enthusiastic spam filters… looking at you Outlook and Gmail.
Password reset emails and notification emails I guess. You can get notifications emailed through an option in your account settings.