Mail Blog
News, engineering insights, and privacy updates from the Aster team.
How to tell a real Aster email from a fake one
The blue badge on Aster's own emails has a specific meaning. Here is exactly what it checks, why it cannot be faked, and how to tell a genuine message from us apart from a phishing attempt.
How our decentralized storage works
There's a switch in your settings that takes your files out of our database entirely. Here's exactly what it does, where your encrypted files end up, and what we can still see, with nothing dressed up.
Introducing Aster Vanguard Lockdown Mode
Lockdown Mode is a one-tap security state in Aster Vanguard that blocks all external content, hides notification previews, and stops screenshots on the Aster apps, with no accidental way to turn it off. Built for journalists, activists, and high-risk accounts.
Password-protected, quantum-safe messages to anyone
How Aster lets you send encrypted, password-protected messages to Gmail and Outlook users using ML-KEM-768 post-quantum encryption, with no keys required on their end.
Our code audit, and the fixes
Our code audit, and the fixes
Can I change my username?
Your Aster username is permanent because it is also your email address and encryption identity. Here is why it cannot be renamed, and the two reliable ways to end up with the name you want.