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AtomicMail alternatives

As of Nov 13, 2026, the best AtomicMail alternative for most people is Proton Mail (3.0 GPA), third in our ranking of email apps. It's also the best free one.

AtomicMail compared with 5 alternatives: Proton Mail, Tuta Mail, Mailfence, StartMail and Fastmail.

AtomicMail has a free plan. Paid plans start at $3 per user / month (Business Starter, billing basis not stated). 3 of the 5 alternatives are free or have a free plan. 2 more offer a free trial.

Listings checked up to Nov 13, 2026 · Where the facts come from

Black Friday: is there a AtomicMail sale?

At a glance

ToolPriceFree planRuns on
AtomicMailThis toolFree plan · from $3/moYesWeb, macOS, Windows, Linux, iOS, Android
Proton MailFree plan · from $3.99/moYesWeb, macOS, Windows, Linux, iOS, Android
Tuta MailFree plan · from €3/moYesWeb, macOS, Windows, Linux, iOS, Android
MailfenceFree plan · from €2.50/moYesWeb, iOS, Android
StartMailFree trial · from $4.99/moTrial onlyWeb, Android
FastmailFree trial · from $3/moTrial onlyWeb, macOS, Windows, Linux, iOS, Android

Price against what you get

AtomicMail starts at $3 a month for each person and scores 2.7 out of 4 on features, ease of use and platforms. None of the 5 alternatives on this chart both scores higher and starts lower.

Proton Mail, Tuta Mail and Fastmail score higher without starting lower. Mailfence starts lower without scoring higher.

Features, ease of use and platforms, averaged

D1.0C2.0B3.0A4.0Free$0.5$1$2$5$10$20$50$100More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessAtomicMailProton MailTuta MailMailfenceStartMailFastmail

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email apps, and the best at every price

How each one differs from AtomicMail

  1. Proton Mail

    End-to-end encrypted email service based in Switzerland

    • Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly.
    • Proton Mail is open source, according to its own site.
    • Proton Mail also covers calendar.
    • Proton Mail does not cover email signature, which AtomicMail does.

    Suits: People who want an email provider that cannot read their messages

    Proton Mail vs AtomicMailProton Mail pricing and details

  2. Tuta Mail

    End-to-end encrypted email and calendar from Germany

    • Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan).
    • Tuta Mail is open source, according to its own site.
    • Tuta Mail also covers calendar.
    • Tuta Mail does not cover email signature, which AtomicMail does.

    Suits: People who want mail, calendar and contacts encrypted by default

    Tuta Mail vs AtomicMailTuta Mail pricing and details

  3. Mailfence

    Private email from Belgium with built-in OpenPGP encryption

    • Mailfence starts at €2.50 per month, billed yearly (Base).
    • Mailfence lists no Windows, macOS and Linux apps, which AtomicMail has.
    • Mailfence also covers calendar and documents.
    • Mailfence does not cover email signature, which AtomicMail does.

    Suits: People who want OpenPGP encryption without installing a plug-in

    Mailfence vs AtomicMailMailfence pricing and details

  4. StartMail

    Paid private email from the Netherlands with unlimited aliases

    • StartMail starts at $4.99 per month, billed annually ($59.88).
    • StartMail has no free plan, only a free trial, unlike AtomicMail.
    • StartMail lists no Windows, macOS, Linux and iOS apps, which AtomicMail has.
    • StartMail also covers inbox filtering.
    • StartMail does not cover email signature, which AtomicMail does.

    Suits: People who want a paid, ad-free mailbox hosted in the Netherlands

    StartMail vs AtomicMailStartMail pricing and details

  5. Fastmail

    Paid, ad-free email with calendar, contacts and custom domains

    • Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly.
    • Fastmail has no free plan, only a free trial, unlike AtomicMail.
    • Fastmail also covers calendar.
    • Fastmail does not cover email signature, which AtomicMail does.

    Suits: People leaving free, ad-funded email for a paid private service

    Fastmail vs AtomicMailFastmail pricing and details

Limits worth knowing in AtomicMail

  • Plus is $7 a month when billed monthly; the $5 price is for annual billing ($60 a year).
  • Business Starter and Standard prices do not say whether they assume annual billing.
  • Teams of 100 or more seats are sent to a contact form for an Enterprise plan.
  • Atomic GPT and Atomic VPN are listed as included on Plus and Business plans; their limits are not stated.
AtomicMail pricing and details

Common questions

What are the alternatives to AtomicMail?

The alternatives to AtomicMail in this directory are Proton Mail, Tuta Mail, Mailfence, StartMail and Fastmail. Each one has a side-by-side comparison with AtomicMail.

Is there a free alternative to AtomicMail?

Yes. Proton Mail, Tuta Mail and Mailfence have a free plan alongside paid ones.

Is there an open-source alternative to AtomicMail?

Proton Mail and Tuta Mail are described as open source on their own sites.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.

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