Yes, Nylas provides this, and also Aurinko: https://www.aurinko.io/blog/imap-restful-api-gateway/ https://www.aurinko.io/blog/imap-restful-api-gateway/ Nylas i

Yes, Nylas provides this, and also Aurinko: https://www.aurinko.io/blog/imap-restful-api-gateway/ https://www.aurinko.io/blog/imap-restful-api-gateway/ Nylas is a sync engine though so all client data will end up on their servers first and then will be served to you. Aurinko tries to remain API gateway (pass-through) as much as possible. Good luck with the project.