Integrate your Google calendar with your Gmail, encrypt your outgoing email messages, or add a "Search by date" button to your Gmail account. Find out about 40+ tools to use in conjunction with Gmail.

Etacts keeps track of how often you talk with your Gmail contacts, let’s you know who hasn’t responded to you and allows you to quickly send individualized messages to multiple contacts at once.

Want to make sure a friend views your message on Google buzz? Use an @ symbol followed by the first few letters of their name. Select their email address from the list -- you’ll see their email address but other friends will only see their name. They’ll find a copy of your buzz post in their Gmail inbox.

Want to preview photos when you receive a Flickr link, or see the contents of an email without opening it? Add a host of innovative features to your Gmail account by visiting Gmail Labs and enabling features that appeal to you.

Google has introduced the ability to add links and images to your email signature. Log in to your Gmail account, click "Settings" on the top right of the page, and scroll down to "Signature."

This email plug-in replaces Gmail ads with an interface that allows you to see what your contacts look like, where they're based and what they do. Follow TechCrunch's advice and "install it straight away."

You can add a plus (“+”) sign and any words/numbers of your choice after your email username to help sort your Gmail. E.g. Finn+spam@gmail.com. This allows you to create a filter for mail that comes in, using the referenced email address.

Unhappy with the recent Gmail redesign? Check out this list of userstyles and usercripts to customize your email space.