Post an image gallery by emailing a zip file
Want an image gallery out of that folder of images on your desktop? Just turn the folder into a zip and email it to Posterous. If we get a zip file that contains multiple images (and only images), we'll turn the images into a gallery and provide a download link to your original zip file. Easy!
Tip: On a Mac you can turn files or folders into a zip by right clicking on them and selecting "compress"