Troubleshooting

Accounts with errors, Gmail limits, updates, and how to reach us.

4 articles

A mailbox shows an error What to do when Heron shows “Sign-in failed” or “Cannot connect” for a mailbox, and how to use “Fix”.
Gmail: “too many connections” Gmail limits simultaneous connections per account. Here’s why Heron may say “The mail server is busy” and how to fix it.
Update Heron Heron updates itself on desktop. Here’s how it works, how to check manually, and what to do if the restart hangs.
Contact support Write to us at contact@heronmailapp.com. Here’s what to include so we can help quickly, and what you should never send.