Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

To download Unibox from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By eightloops GmbH

Open the Mac App Store to buy and download apps.


A completely new way to organize your emails.

"Unibox's slick interface and contact-centric design make it the best client we tried." — Appleinsider
"It’s easily the simplest and most unique email app on the Mac right now." — MacAppStorm
"A welcome, fresh new approach to email on the Mac" — Macworld
"Unibox Makes E-mail About People, Not Boring Old Mailboxes" — Cult Of Mac

Unibox is an email client that groups your messages by person. This way your emails are organized automatically and you always find what you are looking for.

Unibox supports IMAP servers:
- Gmail
- iCloud,,
- Yahoo!
- Exchange if IMAP is enabled
- Hotmail,,
- Fastmail
- QQMail
- Self-hosted IMAP servers
- Many more

Single window:
Instantly compose your messages without opening new windows.

Easily drill down into a conversation view with multiple participants.

Powerful Filters:
Show only messages that are unread, starred, have attachments or were sent by people from your address book.

Unified Accounts:
View messages and conversations across all your accounts.

Switch Accounts:
Focus on single accounts or folders when necessary.

Attachment List:
Quickly find documents and files you exchanged with other people.

Attachment Grid:
Visually browse your attachments and images.

Preview attachments without launching external apps.

Use multiple identities with a single account, including separate SMTP servers.

What's New in Version 1.2.1

- Fixes occasional issue with messages not syncing with certain mail servers
- Fixes issues related to copy & paste
- Fix for sending with non authenticating smtp servers
- Improved startup time for some users


Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5

Customer Reviews

Saved my Sanity

Clean, intuitive, extremely easy to install and use. Being a mail *hoarder* out of laziness, the Big Dread was cleaning out my mailboxes, and always ended up at the bottom of my to-do list. I found Unibox quite by accident and decided to give it a try, and even though I’ve only been using it for a few days, I love it! The set-up is pure genius. I’ve found emails I should have deleted years ago that plain got lost in the mess. For the first time since starting to use email (since almost the very beginning of email), I am having FUN cleaning out my mailboxes. Kudos to the developers for thinking outside the box. It’s also a great time saver; all my emails from multiple addresses come to one easily accessible site, grouped by sender, making it easy to find what I need to access. I’m still in the learning curve, but it’s not steep and I’m one person who likes my work simple, clean, easy, productive. If anybody is looking for an app that simplifies life, this is definitely one to check out!

Finally, I had a question after I had installed Unibox and sent an email to Support over the weekend. Monday morning, I got a reply that answered my question; that is fast and GREAT customer support. Very friendly and helpful thanks to the crew at Unibox Support. Hey Thomas, thank you! I’m a believer.

Been Using for Six Months - Fix Drafts and It’s Near Perfect

4.5 stars. As of this review, I have been using this app for about six months. That entitles me to say a few things about it, and I must say that I believe it is the best email client available for Mac OS. It beats Mail and Airmail, and I'm not going to even bother with the usual suspects. It’s that much better. The only thing I want to change about this client is the way that it handles drafts, which is fairly ridiculous. Once you create a second draft, the first remains burried until you deal with the second (more recent) one. That is just silly. Other than that it’s fabulous. It has helped me get my spam under control (no small feat) and get back to a zero emails system (whereby any email not read is an email I should read). I should also mention the attachments view. If you have an attachment somewhere in your email inbox and all you know is person who sent it, that’s all you need. You simple bring up that person and click on attachments view and... whoop there it is: all of that persons attachments ever—by list or by icon. That is so nice it can’t be overstated. If you need an email client that someone put some thought into—here it is.

Good Start

This app is definately a nice take on mail but I would venture to say ti needs some more functionality and tweeking ability. It seems unable to sync often with my Yahoo mail account and as such is quite irritating as I have had to quit and reopen the app often to get it to work. On the plus side, customer service has been fast and courteous attemptng to help me resolve my issue. They say it is a Yahoo issue but all I know as the end user is that it works intermittently right now. When it works it is great. I wouldlike the ability to have some say in sorting or home foders for important email/contacts so some emails do not get pshed to the bottom as email is sorted chronologically by default. 4 stars for now another half when Yahoo sync gets to working full time. Definately worth a try if you are sick of your boring old e-mail - the user Interface is very attractive and user friendly which helps the use experience overall dramatically. I’m keeping it as my default email for personal email inboxes but need something more powerful for work (Apple mail with Mailtags and Mailhub extensions)

View in Mac App Store
  • $19.99
  • Category: Productivity
  • Updated:
  • Version: 1.2.1
  • Size: 7.4 MB
  • Languages: English, Dutch, French, German, Italian, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish
  • Seller:

Compatibility: OS X 10.8 or later, 64-bit processor

Customer Ratings

Current Version:
All Versions: