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 sender. 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.

Btw, Unibox is now also available for iPhone and iPad.

What's New

Version 1.8.2

- High Sierra compatibility update

Ratings and Reviews

2.8 out of 5

25 Ratings

25 Ratings

Too many issues and not good for security

Bham River Head

Unibox is something I have used for the past 3 years… I can’t stand the apple mail app, and prefer Unibox, but HERE is why I give it only 2 stars. Unibox was buggy as all getout and I stuck with it. Now, it works and is stable, but the occasional issue comes up and it seems that the developers are always confused as to how their own app works. Finally, I was hacked recently and after hours of working on it, all of my emails and all apps (this is 20-30 accounts) have all been changed except Unibox. The reason is that Unibox claims to use the servers themselves, but this isn’t true because all of the email passwords were updated. 24 hours later it doesn’t work. Delete and reinstall, and it doesn’t work. This is a serious security issue for myself and the people trying to track down the fraud. I have other speculations, but will just suffice to say that even though I like its functionality I don’t think it’s safe to use. Developer: You need to make this app work right. Simple talk from someone who has used your app profusely. The app seems to just lack very common sense solutions to it’s problems.

Still my favorite.


I really like Apple Mail a lot - but it still feels like too much ‘management’ with the in-box.

I also have several others, including the freebie Spark and Airmail. The former is pretty good for a freebie, the latter is fine if you want want that much granular control. For myself: I want simplicity and ease of use. UniBox is it. Sure it lacks some of the fancy-shmancy neato features like DropBox or iCloud integration, but how often does one send such larg attachements anyway? (Yeah, I know some people actually do, just giving an example of how fancy-shmancy features are rarely used that much). UniBox feels so nicely lightweight, snappy, smooth, doesn;t feel like it’s sucking up RAM or system resources, etc.

In short: Unibox focuses your email on the *SENDER*, not the message, just as the previous reviewer states. It is amazingly refreshing and once you wrap your head around this paradigm and way of dealing with your in-box, it is really annoying, possibly even frustrating to go back to the old individual-message-is-important routine. And not having new windows popping open and polluting the screen every time you create a new message and so on is genuinely refreshing.

I LOVE this app, hopefully it will continue being developed for a long time to come, even if it means repurchasing a newer version; I’m all-in.

Emails as People not tasks


Unibox is totally unique. With other email clients, I felt like each email represented a thing demanding my attention or a task to be done. With Unibox, the focus is on the person who sent the email. When emails come in, I see them as clients and persons I am in conversation with and whom I want to serve. I like how all the conversations with that person are linked, so looking back on previous conversations is made easy. In the Unibox view, I can also see emails that I sent out and am awaiting an answer. I like that reminder, otherwise I may forget that if I don’t get a response, I need to follow up. Finally, I like the attachment view, so I can quickly and easily spot an attachment without having to reopen old emails. Works for me!


eightloops GmbH
5.6 MB
English, Catalan, Czech, Danish, Dutch, Finnish, French, German, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish
Age Rating
Rated 4+
© 2017 eightloops GmbH


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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