Best Email client to use with FMP 11?

[labyrinthian]

I'm developing a contact database for a client, which should be friendly with their email client. Currently they are using Outlook for Windows, but will be switching to Mac soon. He is open to switching email clients, so I have the unique chance to suggest the most ideal email system to work with FMP.

Most of the posts on this forum are naturally about the problems; I'm just wondering if anyone has a FMP-email system that they love and would recommend?

I'm still using Entourage but am considering Outlook for Mac 2011, Mail, and am open to any suggestions. Any thoughts would be appreciated. Thanks in advance.