Thundermail only works with IMAP and JMAP for incoming mail. POP3 isn’t supported.
Why only IMAP and JMAP?
IMAP and JMAP keeps your messages on the mail server, and every device connected stays in sync with one another.
- Multiple apps and devices: You can see the same messages in every app you use.
- Offline reading: Your apps can download your messages and attachments to your device so you can read them even without an internet connection later.
- One clean, single mailbox: If you delete a message in Webmail or an app, it's deleted everywhere.
You can see more details in our other articles What is IMAP? and What is JMAP?
What if I tried to set up Thundermail with POP3 instead?
Add your Thundermail account again in your email app and choose IMAP this time.
If you're using Thunderbird Desktop, our guide to Thunderbird for Desktop and Thundermail walks you through it, and we have a guide for the Thunderbird Android app as well. You only need your Thundermail email address and account password to set up either of these!
Some other email apps need a separate password called an app password. You can learn more and discover the server settings you will need in Can I use Thundermail with third party clients?
Thundermail is currently in beta. See something missing or incorrect in our instructions? Did you find a bug or have a great feature idea? Please let us know!