Google Mail is without doubt one of the most popular online email services. What makes it so interesting is not only the functionality that it provides out of the box but also its extensibility.
Here is a list of 10 interesting tools to that will increase the functionality of Gmail immensely:
- Gmail Signatures – Automatically inserts HTML signatures in Gmail messages based on the address the emails get send from.
- Gmail Skins – Change the color of the skin of the Gmail website.
- Integrated Gmail – Makes it possible to display other Google services like Google Calendar or Reader directly in Gmail.
- Multiple Gmail Signatures – Create and use multiple signatures in Gmail.
- Gmail Emoticons – Adds emoticons to Gmail.
- Gmail Assistant – A notifier for multiple Gmail accounts with many options.
- Gmail Backup – Explains how to backup all mails of a Gmail account locally.
- Gmail Mobile – Mobile application for Gmail.
- Google Email Uploader – Upload emails to Gmail.
- How To Read Mail Without Touching Your Mouse – It is possible to use Gmail without using the mouse at all.

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