The Proton VPN alternative that's post-quantum today
Secria VPN protects every WireGuard session with post-quantum ML-KEM-1024, on by default, on every server. It runs every server in RAM, and Secria Pro adds encrypted email for $9.99 a month. Proton describes its post-quantum VPN work as groundwork for the future, and it uses encrypted disks instead of RAM-only servers.
Why people look elsewhere
Three things Proton VPN does differently
Taken from Proton's own blog and help pages. Every point links to its source.
Post-quantum is still on the roadmap
Proton’s April 2026 roadmap says its new VPN codebase will “lay the groundwork for post-quantum encryption.”1 Its August 2026 technical post still describes post-quantum cryptography as a future technology.2
Encrypted disks, not RAM-only
Proton explains in its own blog that it does not use RAM-only servers. It encrypts server disks with LUKS and keeps the keys off-site.3
Premium mail is a separate, bigger plan
Proton VPN Plus comes with the free Proton Mail plan. Premium mail and VPN together means Proton Unlimited, listed at $12.99 a month on monthly billing.4
Post-quantum mail is a setting
Proton Mail’s post-quantum protection is something you enable in your account.5 In Secria Mail it is on for every plan, including free.
Proton VPN vs Secria VPN
Side by side, where it matters for the long run
| Question | Proton VPN | Secria VPN |
|---|---|---|
| Post-quantum VPN tunnel | Described as groundwork for future work.12 | ML-KEM-1024 on WireGuard, on by default, every server. |
| Server storage | Disks with full-disk encryption.3 | RAM-only. Nothing written to disk. |
| VPN plus premium encrypted mail | Proton Unlimited, $12.99/mo on monthly billing.4 | Secria Pro, $9.99/mo on monthly billing. |
| Post-quantum email | A setting you enable.5 | On by default on every plan. |
- Proton VPN, Proton VPN 2026 spring and summer roadmap (April 27, 2026): the new codebase will “lay the groundwork for post-quantum encryption.”
- Proton VPN, Proton protocols: the next chapter of WireGuard at Proton VPN (August 12, 2026): “prepares the groundwork for future technologies, like stronger anti-censorship techniques and post-quantum cryptography.”
- Proton VPN, Why Proton VPN doesn’t use RAM-only VPN servers (July 26, 2024). Proton uses LUKS full-disk encryption with keys stored off-site.
- Proton, Proton VPN pricing: VPN Plus comes with Proton Mail Free; Proton Unlimited combines VPN Plus and Mail Plus. Proton Unlimited listed at $12.99 a month on monthly billing.
- Proton, How to enable post-quantum protection in Proton Mail (Proton Support).
Checked September 2026 against Proton’s own pages. Secria facts are from our VPN page, pricing and whitepaper.
What you get with Secria VPN
Built for the traffic you send today
Post-quantum by default
Every session gets a fresh ML-KEM-1024 key mixed into WireGuard. Here is how our post-quantum VPN works.
RAM-only servers
Keys, configs and connection state live in memory only. See what RAM-only means.
No activity logs
We do not record browsing, DNS queries or traffic contents. While a session is live we hold the account and device it belongs to, the server in use and the time it started. That record goes when the session ends.
Multi-hop and kill switch
Route through three servers when you want to, and an OS-level kill switch blocks traffic if the tunnel drops.
Private DNS
Lookups are resolved on our own servers with DNSSEC, never handed to a third party.
Mail in the same account
Secria Pro adds Secria Mail with post-quantum email on by default, 500 GB and unlimited aliases.
Switching from Proton VPN
Try it next to Proton before you cancel
Create your Secria account
Pick VPN Plus, or Secria Pro if you want mail too. One login covers both.
Install on your devices
Get the apps for iOS, Android, Windows, macOS and Linux from the download page. Use up to 5 devices at once.
Cancel Proton when you're sure
Run both for a while. If Secria isn't for you, the 30-day money-back covers plans bought on our site.
One price, post-quantum included
Every Secria VPN plan gets the same post-quantum tunnel and RAM-only servers.
VPN Plus
$7.99/mo
The full Secria VPN on 5 devices: post-quantum on every server, RAM-only servers, multi-hop, kill switch, private DNS and split tunneling.
Get VPN PlusSecria Pro
$9.99/mo
The same VPN plus Secria Mail with 500 GB, unlimited aliases and 10 custom domains, in one account.
Get Secria ProMonthly prices shown. Yearly and 2-year plans cost less per month. Compare all plans
30-day money-back on plans bought here. App Store and Google Play purchases follow their own refund rules.
Questions about switching from Proton VPN
Does Proton VPN have post-quantum encryption?+
Not in its VPN apps today, going by Proton's own posts. Its April 2026 roadmap says the new codebase will lay the groundwork for post-quantum encryption, and its August 2026 technical post still calls it a future technology.
Does Proton VPN use RAM-only servers?+
No. Proton says in its blog that it uses full-disk encryption on its server drives, with the keys stored off-site, instead of RAM-only servers. Every Secria VPN server is RAM-only.
Can I get a VPN and encrypted email in one plan?+
Yes. Secria Pro includes the full Secria VPN on 5 devices and Secria Mail with 500 GB, for $9.99 a month on monthly billing. Yearly and 2-year plans cost less per month.
Can I try Secria VPN without risk?+
Yes. Plans bought on our site come with a 30-day money-back guarantee. App Store and Google Play purchases follow their own refund rules.
What devices does Secria VPN work on?+
iOS, Android, Windows, macOS and Linux, with native apps on each. One plan covers 5 devices at once.
Post-quantum today, not on a roadmap. Every server, every session, on by default.
iOS, Android, Windows, macOS and Linux. 30-day money-back.