I have just submitted a couple of patches (this and this) to Tinymail that add Moblin to the list of supported platforms.
Basically the main addition is the TnyMoblinDevice, it’s an object that allows every application that uses Tinymail to use the connectivity services provided by Moblin’s Connection Manager.
In order to build Tinymail for Moblin you just need to use –with-platform=moblin
in the configure process.