Question: Can anyone recommend an iOS email client (Exchange/ActiveSync or IMAP... preferably both) that supports really sweet email signatures? Our company email signature has an official format that has a base64 encoded image and a standardized font/color.

Please, throw me some suggestions!

Answer: 
[Moxier](http://www.moxier.com/)
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This is an email client which supports Exchange ActiveSync in the AppStore. But I'm not sure it supports sweet email signatures.
Outlook Mail is pretty good and supports signatures. The problem I've run into is that it doesn't support saved searches (As far as I can Tell) or unread search.