What are the most useful plugins for Gmail?

plugins and tools that work with gmail to increase productivity

From web app CodeToGlory

• I like GMail notifier, which lets you know you have new mail, even if you don't have a browser window (or a gmail tab) open.

  From fmark

• Google's own Gmail Labs features are a major benefit for me.

  Doug Harris : Among the dozen labs I have enabled, I particularly like "Canned Responses", "Don't forget Bob", "Got the wrong Bob?", and "Inserting images"
  From Brad Gardner

• I am a huge fan of Rapportive, definitely worth checking out (free)

  Rapportive integrates into your gmail and serves as a simple CRM.

  From Jeff Epstein

• From Gmail Labs, the 2 I have enabled:

  Title Tweaks - puts the # of new msgs in the title so you can see it when your browser window is minimized. e.g. "Inbox (3) - you@gmail.com"

  Inserting Images - allows direct embedding of images into the body of your email (not sure why this isn't part of the "core" app)

  From scunliffe

• Mail Goggles -- it ensures you're in the right mind to be communicating with the outside world.

  From adamcodes

• Better Gmail 2 encapsulates a number of helpful add-ons that I like. (Requires Greasemonkey, and, thus, Firefox.)

  Currently:

  • Add Row Highlights: Highlights the letter rows in the new Gmail when you hover over them with the mouse cursor.
  • Attachment Icons: See what kind of attachment an email has in list view.
  • Attachment Icons (Native): Same as attachment icons, but uses icon images native to your system.
  • Bottom Post in Reply (Plain Text only): Inserts cursor after the quoted message in plain text replies automatically.
  • Label Links: Lists labels in a folder-like hierarchy.
  • Hide Buzz Count: Hides the unread count next to Buzz in Gmail.
  • Hide Chat: Hides Gmail's Chat box in the sidebar.
  • Hide Invites Box: Hides the Gmail invites box on the sidebar.
  • Hide Labels in Message Row: Hides the labels that appear in a message row unless the user hovers over the message.
  • Hide Spam Count: Hides Gmail's Spam message count.
  • Inbox Count First: See unread message count first on Gmail tab title.
  • Play Sound Notifications for New Mail: Plays an audible notification when you receive new email.
  • Show Unread Message Count on Favicon: Shows the number of unread Gmail messages in the favicon in your Firefox tab.
  Oren : BTW, Greasemonkey for Chrome is out. http://mashable.com/2010/02/01/google-chrome-greasemonkey-2/
  From Al Everett

• From Gmail Labs:

  Undo Send should be enabled by default ! Saves you for instance from the accidental tab-enter...

  I also like the Mark as Read Button.

  3rdparty : I LOVE LOVE LOVE "Undo Send" - and now you can change/extend the undo interval
  From Jules Olléon

• If you send and receive a lot of documents by email, DokDok (dokdok.com) is pretty handy.

  I'm the Founder, sorry for the shameless plug, couldn't resist such an open question.

  From Bruno Morency

• Google Mail Checker Plus is an excellent extension to Chrome. It not only notifies you of new emails and shows the preview of the message but also allows to

  • mark email as Read
  • mark email as Spam
  • Archive email
  • Delete email

  all that without opening the email itself. I wish those features where added to the email notifier in Google Talk client

  From kristof