OAuth 2.0 authentication support for IMAP

Using the new Authentication Type option, Receive Email Actions in IMAP mode can now use OAuth 2.0 to authenticate their connections through the SASL XOAUTH2 mechanism.

To use this, set the Authentication Type option to XOAUTH2 and use a pill to set an OAuth credential as the password.

You can find more information on using OAuth 2.0 to connect to Gmail accounts here and Exchange accounts here.