Which email accounts work?
Gmail, iCloud, Outlook, Microsoft 365, Yahoo, Fastmail and any IMAP server, all in one inbox. Add as many as you like.
Do you store or read my mail?
No. bytemail talks straight to your mail provider from your Mac or iPhone. There's no bytemail server in between, so your messages, contacts and passwords never reach us. Passwords stay in your Keychain.
What do I need to run it?
A Mac with Apple silicon on macOS 14 Sonoma or later. bytemail for iPhone needs iOS 26.
Is there an iPhone app?
Yes. bytemail for iPhone is in public beta on TestFlight, and once it's out it comes with your licence at no extra cost.
How do I join the iPhone beta?
On your iPhone, install Apple's TestFlight app from the App Store, then open the beta link above and tap Accept and Install. TestFlight keeps the beta up to date and lets you send feedback with a screenshot.
Do I have to set my accounts up again on iPhone?
No. If bytemail on your Mac syncs through iCloud, the iPhone offers your Mac's accounts on first launch, with their passwords when you've turned on Include passwords on the Mac. You can also add an account by hand.
Do I get new-mail notifications on iPhone?
Yes. While bytemail is running on one of your Macs, new mail reaches your iPhone the moment it lands, and so do read receipts. The alert itself carries nothing about the message: your iPhone fetches the mail and writes the notification on the device.
Can I install it with Homebrew?
Yes: brew install --cask bytemail. It's the same app as the download from this site, with the same free trial and licence, and it updates itself.
How many devices does one licence cover?
Up to 5, Macs and iPhones alike. To move it to a new device, deactivate the old one in the app.
Do my labels and settings stay in sync?
Yes. Labels, tabs and preferences sync between your Macs and iPhone through your own iCloud, never through our servers.
Something isn't working. Who do I tell?
Write to hello@bytemailapp.com. On the iPhone beta, take a screenshot and share it with TestFlight. Every report is read.