My favorite way to compile Mutt is:
sudo port install mutt-devel +smtp +ssl +imap +sasl +headercache
This allows me to check GMAIL IMAP, and send using Gmail's SMTP server.
Lifehacker has an article on setting up mutt and gmail
OMG PONIES: Solarized Themes for Mutt
Querying OS X's Address Book for matching email addresses: Hooking OS X's address book to Mutt
Opening URLs is easy with OS X's built in "Open URL" service. Especially when you give it a keyboard shortcut!
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