This tutorial will show you how to setup an IMAP account with SSL in ThunderBird
6) Select this option if you want to remember your password.
7) Type your password.
It will fill in these settings automatically, but let’s choose manual config to choose the settings manually.
The Port should be 993. Let’s select it.
Notice that SSL automatically changed to SSL/TLS. Keep it as it is.
Please change authentication to normal password.
The SSL port for SMTP should be 465. Let’s change it.
Notice that as we changed the port, SSL is automatically changed to SSL/TLS. Leave it as it is.
Now change authentication to normal password.
This is the end of the tutorial. Now you know how to configure an IMAP account with SSL in ThunderBird.