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Productivity · head to head

Fastmail vs Kahoot

Fastmail logo

Fastmail

Productivity

Paid email hosting with custom domains, calendar and contacts, run without ad-based revenue

From
$3/month
Rated
-
Full reviewWebsite
Kahoot logo

Kahoot

Productivity

Make learning awesome with game-based quizzes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Kahoot has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fastmail it does not provide end-to-end encryption by default, so users specifically wanting zero-knowledge mail should compare it against Proton Mail or Tuta rather than assume parity.; Kahoot no free tier available; all plans are paid subscriptions starting at $19/month
  • They diverge on capability: Fastmail covers Custom domain hosting, Kahoot covers Quiz games.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fastmail and Kahoot actually diverge.

Attributes where Fastmail and Kahoot differ
AttributeFastmailKahoot
Starting price$3/monthFree
Pricing modelPer user per monthsubscription
Free tierNoYes
PlatformsWeb, iOS, Android, macOS, WindowsCloud-based SaaS, Mobile apps (iOS, Android)
FoundedUnknown2012

Identical on both: user rating (Not yet rated), category (Productivity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fastmail

  • Custom domain hosting
  • Masked email
  • Unlimited aliases
  • Integrated calendar and contacts
  • Migration tools
  • JMAP support

Only in Kahoot

  • Quiz games
  • Surveys
  • Puzzles
  • Word clouds
  • Live games
  • Self-paced challenges
  • Reports
  • Question bank

What people use each for

The jobs each tool is most often brought in to do.

Fastmail

  • Someone who wants their email address tied to a domain they own rather than a free provider they do notnot Kahoot
  • A small business wanting hosted mail on its own domain without running mail server infrastructurenot Kahoot
  • A person leaving Gmail specifically to stop an ad-funded provider processing their mailnot Kahoot
  • A household migrating several accounts to one paid provider with shared billingnot Kahoot

Kahoot

  • Interactive quizzes and learning assessments for educationnot Fastmail
  • Employee training and development programsnot Fastmail
  • Conference and event audience engagementnot Fastmail
  • Team building and company-wide meetingsnot Fastmail

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fastmail

  • It does not provide end-to-end encryption by default, so users specifically wanting zero-knowledge mail should compare it against Proton Mail or Tuta rather than assume parity.
  • Moving to Fastmail is a real migration with DNS changes for a custom domain, unlike installing a client such as Spark or Bluemail over an existing account.
  • There is no free tier at all, so a user just wanting to try it commits to a paid trial rather than a permanently free option.
  • Storage limits on the entry Basic plan are modest next to the free allowance Gmail gives, and heavy attachment users will need Standard or above.
  • Being based in Australia means it falls under Australian data access law, which some privacy-focused buyers weigh differently from Swiss or German jurisdictions used by Proton Mail and Tuta.

Kahoot

  • No free tier available; all plans are paid subscriptions starting at $19/month
  • Participant limit increases significantly with plan tier, from 50 to 5,000 maximum

Pricing, plan by plan

Fastmail

$3/month
  • Basic$3/month
    • 6GB storage
    • No custom domain support
    • Core mail, calendar and contacts
  • Standard$5/month
    • 60GB storage
    • Custom domain support
    • Masked email and aliases
  • Professional$9/month
    • 150GB storage
    • Multiple custom domains
    • Priority support

Kahoot

Free
  • Kahoot! 360 Pro Start$19/month
    • Up to 50 participants per session
    • Interactive quizzes and polls
    • Basic hosting
  • Kahoot! 360 Pro Standard$25/month
    • Up to 200 participants per session
    • Brainstorms and word clouds
    • Slide syncing and Q&A
  • Kahoot! 360 Pro Plus$49/month
    • Up to 1,000 participants per session
    • Courses with certificates
    • NPS surveys
  • Kahoot! 360 Pro Max$69/month
    • Up to 2,000 participants per session
    • Custom theming
    • Immersive branding

Which should you pick?

Choose Fastmail if

  • You need custom domain hosting.
  • You work on Web, iOS, Android, macOS, Windows.
  • You also want masked email.
Fastmail review

Choose Kahoot if

  • You need quiz games.
  • You want to start without paying.
  • You work on Cloud-based SaaS, Mobile apps (iOS, Android).
  • You also want surveys.
Kahoot review

Questions people ask

Is Fastmail or Kahoot better?
Neither clearly leads. Fastmail starts at $3/month and Kahoot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastmail or Kahoot?
Kahoot has a free tier; the other does not. Paid plans start at $3/month for Fastmail and Free for Kahoot.
Does Fastmail or Kahoot run on more platforms?
Fastmail runs on Web, iOS, Android, macOS, Windows. Kahoot runs on Cloud-based SaaS, Mobile apps (iOS, Android).
Can I use Kahoot for free?
Yes. Kahoot has a free tier, so you can try it without paying. Fastmail starts at $3/month.
What is Fastmail best used for?
Fastmail is most often used for someone who wants their email address tied to a domain they own rather than a free provider they do not, a small business wanting hosted mail on its own domain without running mail server infrastructure, a person leaving gmail specifically to stop an ad-funded provider processing their mail, a household migrating several accounts to one paid provider with shared billing. Of those, someone who wants their email address tied to a domain they own rather than a free provider they do not and a small business wanting hosted mail on its own domain without running mail server infrastructure are not what Kahoot is typically brought in for.
What can Fastmail do that Kahoot cannot?
Fastmail covers Custom domain hosting, Masked email, Unlimited aliases, Integrated calendar and contacts. Kahoot covers Quiz games, Surveys, Puzzles, Word clouds.

Answered from the vendors’ own pages

Fastmail: Is Fastmail a client like Spark, or does it host my email?

It hosts the mailbox itself; there is no separate provider underneath it the way Spark sits over Gmail.

Kahoot: What is the cheapest Kahoot plan and what audience size does it support?

Kahoot! 360 Pro Start is $19 per month (or $228 annually) and supports up to 50 participants per session. It includes interactive quizzes, polls, basic hosting, and AI kahoot creation.

Source
Fastmail: Does Fastmail offer end-to-end encryption?

Not by default in the way Proton Mail or Tuta do; its privacy position rests on being subscription-funded rather than ad-funded.

Kahoot: Which Kahoot plan supports the largest audience, and what is its participant limit?

Kahoot! 360 Pro Ultra is the top tier at $79 per month (or $948 annually) and supports up to 5,000 participants per session. It includes full AI assistant access, event consultation, commercial licensing, and large document processing up to 500 pages.

Source
Fastmail: Can I use my own domain?

Yes, from the Standard plan up, with full alias and masked email support.

Kahoot: How much does a Kahoot plan cost annually if I pay upfront?

Annual pricing is available for all plans and includes a discount: Pro Start is $228/year ($19/month), Pro Standard is $300/year ($25/month), Pro Plus is $588/year ($49/month), Pro Max is $828/year ($69/month), and Pro Ultra is $948/year ($79/month).

Source
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