Many companies today uses Google Suite for their Email and everyone has gotten used to the Gmail interface. One advantage of Gmail is, safe and easy programmatic access to the emails via IMAP.
The problem I am trying to solve here is you might not know when a person would respond back when you send an email. You will compose an email, hit send and wait forever. I know that Emails are Asynchronous, but it would be a nice to have an idea of when one can expect a reply.