I want to integrate email management and routing services as part of my client service package.

My clients have a lot of hourly employees that they need to communicate with but for privacy reasons, they don't necessarily want to use a corporate or private email address.

For example, a manager may want to use his private phone to send an email to a group of employees. Any replies would be routed to his secretary at the office --- with all addresses remaining semi-anonymous. My software will handle all this with the help of your service.

I currently have several hundred clients with a total of over 20,000 employees.

In other words, this all strictly opt in --- no marketing.

Although @sanity31415 has offered to get in touch with his 33mail product, there's also the option of standing up a REST API server in front of your mailboxes.

There is an open source product called IMAP API which is available under 2 licenses depending on your needs: AGPL & MIT. It recently had its own Show HN [2].

[1] https://github.com/andris9/imapapi

[2] https://news.ycombinator.com/item?id=25372987

Very interesting, and probably not difficult for us to implement. Would you mind emailing me to discuss? I'm ian [at] 33mail [dot] com.

Will do.