Mailplane 2.0.5(976)+Mailplane 2.1 Beta(1095)[BOTH K'ed UB]

http://mailplaneapp.com/Drag 'n' Drop Attachments
Drag 'n' Drop File Attachment

Attaching files and folders has never been easier. Drag 'n' drop your files and folders to Mailplane. Watch as they attach to the message and instantly upload.
Send Optimized PhotosPicture-sending made simple. Mailplane automatically resizes and optimizes your pics to reduce the size of your message.
Instantly Send Screenshots
Instantly Send Screenshots

With Mailplane, capture your screenshot and attach it to your message in a single click.
Cool iPhoto PluginWith Mailplane's iPhoto plugin, sending pics from iPhoto is as simple as selecting your photos and pressing the email button. It's really that simple.
Use Unlimited Gmail Accounts

Add unlimited Gmail accounts (or Google apps for domain accounts), and switch between them without restarting Mailplane. And there's no need re-enter passwords every two weeks. Mailplane store them safely in the Mac Keychain.
Mailplane's Download FeaturesDownload attachments and then reveal them in Finder. Or - if the attachment is a photo or .ZIP file containing pictures - directly import to iPhoto.
Get NotifiedMailplane lets you know when new mail arrives - by playing a sound, displaying your unread messages in the application icon, or by the Growl notification system. Plus: Monitor all your accounts using the Accounts Drawer or the Status Iitem.
Talk with your BuddiesMailplane shows a Growl notification when someone wants to chat. The Google Talk Gadget (displayed in separate window) offers Video/Photo Preview and other nice features.

Full keyboard-control of Google Mail using Mac keystrokes, flexible and customizable toolbar; mail-sending from address book, safari or any application showing "mailto" URLs - and so much more. Plus: You can use it in sixteen different languages...