Would IMAP client code connecting to Office only start to fail after basic authentication is dropped in Oct 2020 https://support.microsoft.com/en-us/help/4521831/exchange-online-deprecating-basic-auth
Specifically would code like the one below start failing?
// Create an imapclient with host, user and password
ImapClient client = new ImapClient();
client.Host = “domain.com”;
client.Username = “username”;
client.Password = “password”;