1Byte Systems

Privacy

Private by design, not by promise

1B Mail connects to your mail servers and nowhere else with your mail. It blocks the pixels that report when you open a message, cleans tracking from links and never shows ads.

Included in every copy of 1B Mail, not part of Pro.

1B Mail: Private by design, not by promise

What it is

Many marketing emails load invisible images that tell the sender when, where and on what device you opened them. 1B Mail doesn't load remote images until you allow it — for one message or for a sender you trust — and tells you how many trackers it blocked.

There are no analytics, no crash reports and no advertising in 1B Mail. Your passwords live in an encrypted vault whose key is kept in your system's keychain.

  • Remote images blocked
  • Links without tracking
  • No ads, no analytics
  • No AI reading your mail

How it works

  1. Step 1

    Trackers blocked when you open

    The message shows what was blocked. Show images or Trust sender when you want them.

  2. Step 2

    Clean links

    Tracking parameters are removed from links before you open them, and you're warned when a link's text doesn't match where it really goes.

  3. Step 3

    Safe messages

    Every message is cleaned up before it's shown; scripts never run.

  4. Step 4

    Your passwords, locked

    Account passwords are kept in an encrypted vault, with the key in your system's keychain.

Screenshots of the real app with made-up sample data.

Who it's for

  • Privacy-minded users

    Read newsletters without telling marketers when you did.

  • Professionals

    Client mail stays between you and your provider.

  • Everyone

    Fewer surprises: no ads in your inbox, ever.

Good to know

  • While you set up an account, 1B Mail can look up public auto-configuration directories to find the server settings.
  • With sync on, our server stores your encrypted setup — never your messages or passwords.
  • Updates are checked against 1bytesystems.com.

Questions about this feature

Is there AI reading my email?

No. Nothing in 1B Mail sends your messages to an AI service. Sorting, the Screener and rules run on your device.

Does 1B Mail show ads?

No, never.

What does 1Byte receive?

Without sync, nothing about your mail. With sync, only your encrypted setup.

Can I always load images from someone I trust?

Yes, choose Trust sender and their images load from then on.

Related features

Try it yourself

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

Get 1B MailAll features