Atomic Mail
By AtomicMail Systems OÜ, Estonia
End-to-end encrypted email from Estonian company AtomicMail Systems, registered in 2024, with a free plan and seed-phrase recovery.
At a glance
- Cheapest plan per year
- $60
- Plus, 12 × monthly, renewal not stated
- Your own domain from
- Not offered
- Not stated for every plan
- Works in Apple Mail and Outlook
- No
- Who can read stored mail
- Only you
- Client-side encryption; private keys not held by Atomic; seed-phrase recovery
Good to know
- Stored mail is encrypted with keys only you hold
- No IMAP: you use its own apps
Where it stands among 24
Each fact with every provider's answer. Atomic Mail is outlined.
Who can read your stored mail
Only you
Only you 3
Only you, if switched on 4
The provider can 16
Not stated 1
Ads on the free plan
Free, no ads
Your own domain
Not stated
On a personal plan 12
Only on a business plan 3
Not offered 2
Works in Apple Mail and Outlook
No, its own apps only
Yes, standard IMAP 17
Through a bridge app 1
No, its own apps only 3
Where the company is based
Estonia
European Union 7
Switzerland or Norway 5
Elsewhere 4
Plans and prices
In USD, as listed by Atomic Mail on 2026-10-16.
Free
Free
10 aliases; no ads stated; no phone number needed; sending limits unknown
Plus
$60/yr
12 × $5 monthly
- People
- 1
- Storage
- Not stated
- Own domains
- None
- IMAP
- No
- Renews at
- Not stated
'From $5/month'; annual billing about 20% off. 15 aliases, Hide My Email, AI features. No own domain (Business Starter is the cheapest with one).
Business StarterBusiness
Not stated
- People
- 1
- Storage
- 15 GB
- Own domains
- Not stated
- IMAP
- No
- Renews at
- Not stated
$3 per user per month; billing term not stated. 5 aliases per user. Cheapest plan with your own domain.
Who can read your mail
- Provider can't read stored mail
- YesYes
- Subject lines encrypted
- YesYes
- Encrypted between its own users
- YesYes
- Encrypted mail to outsiders
- YesYes
- Built-in PGP
- NoNo
- Ads on the free plan
- NoNo
- Mail used for ads
- NoNo
- AI and your mail
- Says AI features run locally or minimised; no mail used for training or profiling
Who you're trusting
- Owner
- AtomicMail Systems OÜ
- Operating company
- AtomicMail Systems OÜ
- Based in
- Estonia
- Mail stored in
- Not stated
- Open-source apps
- NoNo
- Transparency report
- Not foundNot found
- Latest audit
- None published
- Known incidents
- None found
Apps and features
- Web Yes
- iPhone Yes
- Android Yes
- Windows Yes
- macOS Yes
- Linux No
- Works in Apple Mail, Outlook, Thunderbird
- NoNo
- POP3
- NoNo
- Exchange ActiveSync
- NoNo
- Security key or passkey sign-in
- Not statedNot stated
- Authenticator-app 2FA
- Not statedNot stated
- Extra addresses
- 10 on free, 15 on Plus
- Hide-my-email aliases
- YesYes
- Catch-all for your domain
- NoNo
- Calendar
- NoNo
- Contacts
- NoNo
- File storage
- NoNo
- Sieve filters
- Not statedNot stated
- Scheduled send
- Not statedNot stated
- Undo send
- Not statedNot stated
- Import from Gmail or Outlook
- Not statedNot stated
- Export your whole mailbox
- Not statedNot stated
- Auto-forwarding
- Not statedNot stated
Compare Atomic Mail
Sources (5)
- Research summary of the provider's pages (no single link)AI-assisted research, spot-checked, checked 2026-10-16
- Atomic Mail privacy policyVendor, checked 2026-10-16
- Atomic Mail security white paperVendor, checked 2026-10-16
- Atomic Mail pricingVendor, checked 2026-10-16
- Atomic MailVendor, checked 2026-10-16