An important part of email etiquette is to include a signature in each message you send (both when you compose a message, or reply to a message.) Similar to a signature in a letter, an e-mail signature is added to the end of your message.
Here's a template for creating a basic & effective email signature:
Springfield Public Library
742 Evergreen Terrace | Springfield, ZZ 80085
939-555-3223 | http://www.springfieldlibrary.org
Everything else — like your Twitter account or IM address — is gravy.
To ensure every email message you send has your signature automagically included, follow these steps in Outlook 2007 to set it up. (If you use Outlook 2003, view step-by-step instructions at Creating a Signature for Your Outlook E-Mail, and if you use Outlook 2010 view Add an E-mail Signature to Messages.)
- Open Outlook
- Click Tools, and in the menu click Options
- In the Options window, click the Mail Format tab
- Click the Signatures button
- In the Signatures and Stationery box, click the New button
- In the New Signature box, type a name (like Default) for the signature file, and click the OK button
- Type in your signature. Make sure to set the default signature as Default for both New messages and Replies/forwards. Then click the OK button.
So, to use your new signature, simply start composing email messages — you'll see the signature in each new message you create.
If you want details on creating multiple signatures or creating fancy HTML signatures, watch Microsoft's Create Great-Looking Signatures for Your E-mail video tutorial.