The nature of our service is that we send a lot of emails: site reports, payment receipts, alerts, password resets, canceled and expiring subscriptions notices... thousands upon thousands of these things, every single day. Any service that sends a high volume of email will get misflagged as spam by some blacklists and/or ISPs.

This is usually the cause of not getting an email you were expecting. Check your spam folder. Even if it's not in there, there's a reasonable chance the email was flat out rejected by your mail provider because of strict suchety such rules on their mail server.

The other main cause of not getting automated emails is that the email address is out of date. This is way more common than you'd expect, so please double check! Email addresses for site alerts and email reports are configured on a per-alert and per-report basis, so double check each of those. Account notifications go to your account email, which you can check on your user settings page.