postphotos is a tool to post/send your photos/images jpeg, gif, png to your image web services. It works on Windows, Mac OS X, Solaris, Linux HP-UX, AIX, tru64, openvms, sco, irix, bsd, .... to images sites (Flickr, Picasaweb, Twitter images sites, Blogger)
If you have a big archive of photos/images it's a long activity to introduce them in your preferred site. With postphots you can simply use a command like this
postphotos *.jpg *.gif *png
You can run postphots on Windows, Solaris, HP-UX, AIX, Linux, Mac OS

List of webs that support the possibility to send images by email:
1. Flickr
2. Picasaweb
3. Photobucket
4. Snapfish
5. Facebook no directly (e.g. using Posterous)
6. Blogger
7. Tumblr
8. Ning
9. Wordpress better using Postie plugin
10. Posterous
11. Photoblog
12. Fotolog
13. twitpic
14. twicli
15. yfrog
16. twitgoo
17. twitrpix
18. img.ly
19. zannel
20. tweetphoto
21. screentweet
22. mobypicture

Command line tool syntax:
usage:
postphotos [-options ...] files

where options include:
-help print out this message
-configure file default postphotos.cfg
-verbose verbose
-test like verbose (doesn't send the email)
-to "name@domain.com" the receiver
-from "yourname@yourdomain.ext" the sender (please change the default email) with your true email address
-smtp host_name or ip address the host name or the ip address of the SMTP server
-subject subject the subject of the message
-textbody bodytext the body of the message (text)
-htmlbody bodyhtml the body of the message (html)
-image image the image file

The license of this software is Free Trial Software, the price is $50.00, you can free download and get a free trial.