Venetasoft normally makes appearances around these parts because of their Windows Phones apps such as Turbo Camera and Security Toolkit. But the company also works on Windows Phone development components and has recently released LiveMailMessage.
LiveMailMessage emulates the full .NET desktop SDK mail objects and adds new APIs to programmatically send unattended emails such as alarms or schedulers from code without user intervention and attach any kind of file (e.g. image, audio, video, pdf, etc.). LiveMailMessage establishes a "row level" secure SSL connection directly with Microsoft Hotmail's public mail server. This allows users to authenticate with their own Microsoft account.
LiveMailMessage is currently used with Venetasoft's Turbo Camera, Motion Cam and other apps. If you're a Windows Phone developer and are looking for an email component for your app or game, you can find LiveMailMessage over here at WPGeek Component Marketplace for $49 (a trial version is available).