We're aware of an issue where some users in China, Hong Kong, Singapore, Japan and New Zealand were sent an outdated build (0.9.3) by the App Store. This build is no longer functioning. Please contact [email protected] so we can reset your trial when our launch version is released.


Big Mail is an app for your Mac, iPhone and iPad that connects with your existing email provider.

App Requirements

  • macOS Big Sur 11.0 and up
  • iOS 14.0 and up

Mail Providers

Big Mail works with most modern email providers, also known as an IMAP mail provider. The best way to check if Big Mail will work is to download the app and try sign in.

Officially supported providers

  • iCloud
  • Gmail
  • Outlook
  • Office 365
  • Yahoo
  • Fastmail
  • Zoho Mail

Known Issues

Some mail providers will throttle the speed at which Big Mail can download messages. This usually only happens on initial setup. If you’re still experiencing speed issues, please contact [email protected]