UPDATE — You no longer need to use a third-party add-on like WiseStamp as you can now directly edit and set your signature in the Gmail settings.
Anyone can have a very clean and professional Gmail email signature within a few minutes of following this very simple how-to.
Things You’ll Need:
Make sure to of course open up Firefox. If you were already working in Firefox, save your work, log out of your accounts, and close all browser windows/tabs, but one.
Add the WiseStamp Email Signature add-on to Firefox and restart Firefox.
Log into Gmail. You’ll now see a WiseStamp option top-right of the page. Click on it to edit your signature and configure your options.
You may create and style your signature any way you see fit, but I recommend keeping it clean and simple along the lines of:
Your Full Name
Your Job Title
firstname.lastname@example.org | 555.123.4567
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Tips & Warnings
By default, the WiseStamp add-on will add a little credit from the programmer below your signature. To remove it, go to your WiseStamp settings and uncheck “Support and Promote”.