@cran2k @KnightsbridgeEA you will need to have your email address as opposed to your username in order to connect your inbox. Inputting your email address allows HubSpot to directly contact your email server in order to get access to your inbox (as opposed to your account, which is what your username will give you access to). For IMAP and SMTP connections, it is standard protocol to make this connection through an email address and password combination.