1Byte Systems

1B Mail · Features

Everything 1B Mail does, feature by feature

1B Mail is an email program for Windows, Linux and Android. Here is each part of it in depth — with real screenshots, the steps to use it and honest answers about what it does and what it doesn't.

Who uses 1B Mail

People who spend their day in email and want one program they control.

  • Freelancers and consultants

    A work address, a personal one and a client's domain in one inbox, each in its own colour, with templates for the replies you write every week.

  • Small offices

    Shared IMAP mailboxes from your hosting, Microsoft 365 and Gmail side by side, with labels that mean the same thing in every account and rules that file invoices on their own.

  • People leaving Outlook or Thunderbird

    Familiar shortcuts and a reading pane that feels like home; accounts, identities and signatures come over from your old program.

  • Anyone who cares where their mail goes

    Your messages travel straight from your provider to your device. No ads, no tracking pixels, no AI reading your inbox.

Try it yourself

Download 1B Mail for Windows or Linux, or get it on Google Play for Android.