I may never open Macintosh Mail.app again.
I use gmail for everything… I have a number of accounts, and in addition, I have my domain mail hosted there to gain the benefit of the google/gmail spam and virus protection.
Enter Mailplane.app. Its a wrapper for gmail and behaves just like a regular mail client. It has the usual toolbar, and dropdown menu system, all of which talks to gmail, and it presents your mail with the gmail web interface within the app.
I liked it before, but was hesitant, because the previous version only allowed one mail account at a time. In other words, when you logged out, the app would close. This issue has been dealt with in this version and switching between accounts is a snap.
I can see that I will be registering this one as soon as its out of beta 🙂
If you use a Mac, and you use gmail, this is a must-get app.
Join the beta program… it takes a while to get the invitation but it will come sooner or later.