Click to viewGmail's huge success owes itself in large part to the wide range of applications, browser add-ons, styles, scripts and bookmarklets that work with it. From the get-go Google's stayed out of developers' way and turned a blind eye to unofficial Gmail add-ons, even ones that may very well violate its terms of service. Smart move: Google's high tolerance for third-party apps have only helped Gmail win the hearts of power users and tweakers everywhere. To celebrate, today we've got our top 10 list of unauthorized and unofficial but hella-useful apps that make Gmail that much better.



10. Drag and drop attachment upload (Firefox)

9. GmailThis! bookmarklet (all browsers)


8. Import old email with Gmail Loader (Windows/Linux)


7. Check multiple accounts with Gmail Manager (Firefox)


6. Gmail Encryption (Firefox)


5. Gmail Skins (Firefox extension)


4. Saved Searches (Firefox)


3. Gmail Macros (Firefox)


2. Conversation Preview (Firefox)


1. GmailDrive file manager (Mac/Windows/Firefox)

What's your favorite third-party Gmail helper? Let us know in the comments.