Question:
My application (web app & mobile app) needs to interface with a users email to read mails for further processing

Is there are library (py, js) or service that I can leverage that abstracts the access to the mail servers (IMAP, POP3, Exchange, Google API, Outlook API etc.) and provides a single interface (possibly REST API) to access the mails?

It feels redundant to implement each of the above methods of email access, as I see it being a feature in many applications out there, but I am not able to find a library or service that provides it.

Any advice or suggestions with implementing each of them is also welcomed

Thanks in advance