Email that is
yours, not theirs
End-to-end encrypted email for people who actually give a damn about their privacy.
Private email, the way it should be
Free custom domains
Bring your own domain at no extra cost and send mail from an address that's truly yours.
Always encrypted
Your emails are end-to-end encrypted locally on your device before reaching our servers, this ensures that we cannot read your mail.
Open source
All of our services are completely open source for you to read, fork, or submit a pull request.
Generous free tier
Get started with plenty of storage, aliases, and features at no cost, no trial, no credit card.
Easy
Whether you're sending your first ever email or your ten thousandth, Aster makes it easy.
End-to-End Encrypted
All of your mail is end-to-end encrypted locally on your device before it ever reaches our servers, because your conversations are private and nobody else's business.
Zero-access
Your personal encryption keys are not only portable, but they are also stored locally on your device and they're completely private and quantum-safe, meaning we have zero access to your data.
Open source & audited
Aster is open source and regularly audited, because privacy is the foundation of a free society, and it should be available to everyone.
No ads, no tracking, and no BS
We actively block trackers so nobody can follow you around, we will never run ads, and your data will never be sold, ever.
Free custom domains & aliases
Bring your own domain and create as many aliases as you need, we won't charge you for it, because privacy features shouldn't hurt your wallet.
Cross-Platform
Your encrypted inbox is available on all your devices across web, desktop, and mobile, so wherever you go, your inbox goes with you.
Private
Maximum privacy
You shouldn't need a phone number or any personal information to use email, because getting private email shouldn't mean giving up your privacy in the process.
- No phone number required
- Zero personal info
- No ID verification
- Encrypted metadata
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
The UI design is stunning. It's rare to see a privacy tool that actually feels like a high-end, polished app. Usually they're pretty clunky but Aster's looks premium.
The UI is nice and smooth. I like the focus on security and privacy.
Honestly I've got super high hopes for Aster.
Been using Aster since beta and the UI is definitely the best out of the other publicly available email clients, plus the bugs that are found get fixed exceptionally fast.
Aster Mail is just very simple, the UI is clean and amazing, you can create aliases which I find cool, no other email app does that. The community is nice as well, if something is wrong or there's a bug, you get fast responses. With other apps they respond 2 days later and it's not even help.
Claim your address
No personal information required and completely free, just claim your address and you're good to go.
Migrate instantly
QuickSwitch will import all of your previous emails from Gmail, Outlook, Proton, and any other provider without lifting a finger.
Say hello, privately
Just send your email and relax, everything is end-to-end encrypted automatically.
Frequently Asked Questions
Yes, completely. Aster's free plan comes with end-to-end encryption, aliases, and access on every platform we support.
No, and we never will. Aster is built on a zero-access architecture, so your emails are encrypted on your device before they reach our servers. We don't hold the keys, and we never have access to your content.
Yes. All of our code lives on GitHub under the AGPL-3.0 license, so you're free to audit it, fork it, or open a pull request if you want to help shape where Aster goes next.
Because of our zero-access design, we genuinely can't reset your password or decrypt your data for you, that's the whole point. During signup you'll set up a recovery method so you're never locked out.
Web and desktop today, with mobile coming soon. Your inbox stays in sync across every Aster app you use.
Stop being the product
Aster is private, encrypted, and completely free because we built it for people who refuse to be the product, and it's ready whenever you are.
Get Aster free