Does K9Mail support Microsoft's modern authentication methods

[flalgae]

Another possibility - ensure you are not using a secondary account alias as your username:

PSA: Outlook.com outgoing server REQUIRES your primary account alias

This was going to be a support request, but I finally figured out the issue last night. Ever since the emails were sent about basic authentication being disabled on September 16th, I have been trying to get K9 using OAuth 2.0. Switching the Incoming Server setting worked, but the outgoing test always failed with a vague error: Checking outgoing server settings failed Authentication error The server returned the following message: Authentication unsuccessful The answer turned out to be ve…