Mail Blog
News, engineering insights, and privacy updates from the Aster team.
Why Aster won't become the next Skiff
Skiff's shutdown left users scrambling. Here's why Aster is built differently: no investors steering us toward a sale, AGPL code that outlives the company, and standard OpenPGP keys you can take anywhere.
Hi, we're Aster. Here's what we care about.
Aster's mission and the five values we won't trade away: privacy as a right, security that's easy, full open source, no lock-in, and answering to users, not investors. With receipts.
What happens when your subscription ends
A plain explanation of what changes the moment your paid plan ends. What we keep, what gets paused, what you can still do, and how to get back where you were without losing anything.
What does "end-to-end encrypted" really mean
An exact list of what Aster Mail encrypts on your device, what our servers can still see, and an honest explanation of why each piece of metadata exists.
How Aster encrypts your email
A complete, honest look at how Aster encrypts your email — from key derivation and post-quantum protection to the metadata we store in plaintext and why.
Why our storage costs so little
10 GB free and low upgrade prices. Here's the full picture on how we keep storage affordable - the infrastructure decisions, the trade-offs we made, and why this model holds up long-term.