19 REPLY AUTH +OK Login successful
39 POP3 OAuth 2.0 (XOAUTH2) authentication with initial response
42 pop3://%HOSTIP:%POP3PORT/874 -u user --oauth2-bearer mF_9.B5f-4.1JqM --sasl-ir
47 # Verify data after the test has been "shot"
51 AUTH XOAUTH2 dXNlcj11c2VyAWF1dGg9QmVhcmVyIG1GXzkuQjVmLTQuMUpxTQEB