Postie offers many advanced features for posting to your blog via e-mail, including the ability to assign categories by name, tag, include pictures and videos, and automatically strip off signatures.
Category and tag handling
- If you put a category name or ID in the subject with a : (or in  or between - -) it will be used as the category for the post
- If you put the first part of a category name it will be posted in the first category that the system finds that matches - so if you put:
Subject: Gen: New News
the system will post that in General.
Using  or -- you can also post to multiple categories at once:
Subject:  [Mo] [Br] bla bla bla
Subject: -1- -Mo- -Br- bla bla bla
would post to General (Id 1), Moblog, and Brewing all at one time.
- You can add tags by adding a line in the body of the message like:
tags: foo, bar
or you can set a default tag to be applied if no tags are included.
Post to your blog using email (obecná informace z WP Codex).