FollowLetter - Newsletters Socialized And Moved Out Of Your Inbox

FollowLetter lets you subscribe to your favorite newsletters and blogs with a single click. Moving your newsletters from your inbox to a web dashboard allows you to read, comment, save, and share publications while reducing email overload. Discover new newsletters based on your interests and connect with similar people. Co-founded by Ossama Benallouch and Hussein Ahmed.

Join FollowLetter on Twitter, Facebook, and AngelList.

Cloze - Surfacing Your Important Emails And Social Updates

Cloze (on the web, iOS, and Android) surfaces important emails and social updates you should act on by learning who is important to you. The daily "What's New Digest" email is a nice additional feature to quickly see important messages that need action without going to the site or app. Join them on Twitter, Facebook, and Google+.

Notes For Gmail - Add Notes To Your Emails

Notes for Gmail is a Google Chrome extension that lets you add sticky notes right to your emails. A Firefox version is coming soon and you can follow them on Twitter to stay up to date.

Tray - A Powerful Email Assistant That Is IFTTT For Email

Tray works with Gmail and other email providers by checking your incoming email and completing actions based on your set criteria. It continually analyzes your emails to perform the triggers including calls to third party web apps and services as well as webhooks. Examples:

• If Bob emails me after 8 PM then send it to my mobile
• If anyone emails while my email load is high reply to let them know I may take a while to respond
• If Kim emails me a link, add it to Pocket so I can read it later
• If email is greater than 1,000 characters add it to Dropbox
• If Sally emails me and I am in a meeting reply to let her know
• If contact group Family emails me send a SMS

Signup for Tray and follow them on Twitter, Facebook, and AngelList.

Unroll.me - Easily Unsubscribe From Email Newsletters

Unroll.me provides and easy way to unsubscribe yourself from email newsletters.

Joinbox - An Elegant, Simple, And Fluid Dashboard

Joinbox - All of your social actions, emails and online news on one sweet website. (Joinbox full review)

UPDATE: Joinbox announced on December 17, 2012 that they have decided to shutdown (image of the message displayed on homepage).

Right Inbox - Send Emails Automatically Later Using Gmail

Right Inbox adds a a "Send Later" button to Gmail allowing you to schedule the email to be sent in the future.

QueueBot - Automate Your Digital Life

QueueBot schedule tasks and queue actions like ifttt for Twitter, Facebook, email, and SMS.

SpeedDash - Online Productivity Dashboard

SpeedDash is describe by the founder James Schramko: "It was designed to help people reduce their dependence on email. It’s a drag-and-drop bookmark that has popular websites that they visit often. They can create quick links to any website they want and it will show up thumbnail preview of the website. When they click on it, it opens in a new window."

Exuru - Get Your Deal Emails Under Control

Exuru removes the flood of daily deal emails (list) from your inbox, extracts the data, then repackages them for you to view in one location when you want. Over time it learns which deals you prefer and will show more of those. It is available online using any device with a browser and also has an Android app with a dedicated iPad one in the works.

SquadMail - Easy Email Folder Sharing

SquadMail lets you share email folders from your mailbox with any individual or group of collaborators, thus eliminating the need to constantly forward emails and CC recipients. Use it to share emails, notes, pictures and attachments with any email service.

Unsubscribr - Clean Out Your Inbox [Acquired by Swizzle]

Unsubscribr takes a new approach to cleaning out your inbox. It scans your email for bulk and junk mail messages. It then allows you to unsubscribe from those messages quickly and easily. No more hunting for tiny, hidden unsubscribe links. Most of the time we can quickly unsubscribe you with a single click.

UPDATE: Unsubscribr has been acquired by Swizzle.