Blog /Send Only, No Inbox Reading: Our Security Promise

Send Only, No Inbox Reading: Our Security Promise

Understanding why PostSignup only requests send permission and never accesses your inbox.

December 21, 2024
5 min read
Send Only, No Inbox Reading: Our Security Promise

The Core Security Principle

We only send. We never read. This isn't just a policy—it's technically enforced.

What "Send Only" Means

When you connect your email, we request only:

  • Gmail: gmail.send scope
  • Microsoft 365: Mail.Send permission

That's it. These permissions physically cannot read your inbox.

What We Cannot Access

  • Your inbox content
  • Your sent folder
  • Your drafts
  • Your contacts
  • Your calendar
  • Your email threads

Why This Matters

Privacy

Your inbox contains sensitive information. We don't need it and don't want it.

Security

Fewer permissi attack surface. Even if we were compromised, your inbox is safe.

Trust

You shouldn't have to trust us not to read your email. You should trust that we CAN'T.

How to Verify

Gmail:

  • Go to Google Account > Security > Third-party apps
  • Click PostSignup
  • See only "Send email" permission

Microsoft 365:

  • Go to account.microsoft.com
  • Privacy > Apps and services
  • See only "Send mail" permission

Revoking Access

If you ever want to disconnect:

  • Remove access from Google/Microsoft settings
  • PostSignup immediately loses send ability

You're always in control.

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