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Productivity · head to head

Fastmail vs Streaks

Fastmail logo

Fastmail

Productivity

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

From
$3/month
Rated
-
Full reviewWebsite
Streaks logo

Streaks

Productivity

iOS habit tracker sold as a one-time purchase, not a subscription

From
$5.99/one-time
Rated
-
Full reviewWebsite

The short version

  • 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.; Streaks it is iOS and Apple Watch only, with no Android version, so it is not usable for anyone outside Apple's ecosystem.
  • They diverge on capability: Fastmail covers Custom domain hosting, Streaks covers Streak tracking.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fastmail and Streaks actually diverge.

Attributes where Fastmail and Streaks differ
AttributeFastmailStreaks
Starting price$3/month$5.99/one-time
Pricing modelPer user per monthOne-time purchase
PlatformsWeb, iOS, Android, macOS, WindowsiOS

Identical on both: free tier (No), 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 Streaks

  • Streak tracking
  • Apple Health integration
  • Apple Watch app
  • Flexible scheduling
  • Widgets
  • iCloud sync

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 Streaks
  • A small business wanting hosted mail on its own domain without running mail server infrastructurenot Streaks
  • A person leaving Gmail specifically to stop an ad-funded provider processing their mailnot Streaks
  • A household migrating several accounts to one paid provider with shared billingnot Streaks

Streaks

  • Someone wanting a simple visual habit tracker without recurring subscription feesnot Fastmail
  • A person wanting habits like step count or sleep to auto-complete via Apple Health datanot Fastmail
  • An Apple Watch user wanting to log habits without pulling out a phonenot Fastmail
  • Someone tracking a mix of daily and weekly recurring to-dos in one placenot 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.

Streaks

  • It is iOS and Apple Watch only, with no Android version, so it is not usable for anyone outside Apple's ecosystem.
  • The base app caps at 24 tracked habits, which is enough for most users but a real limit for anyone wanting to track a larger number of items.
  • Sync is via iCloud only, so there is no web or cross-platform account, which limits use to Apple devices exclusively.
  • It has fewer social or accountability features, such as shared habit tracking with friends, compared with some subscription-based competitors.
  • A single lifetime purchase means no ongoing development revenue tied to the individual user, so it depends on new sales and occasional priced major updates rather than recurring income to fund development.

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

Streaks

$5.99/one-time
  • Streaks$5.99/one-time
    • Full app, no subscription
    • Up to 24 tracked habits
    • Apple Watch app included

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 Streaks if

  • You need streak tracking.
  • You work on iOS.
  • You also want apple health integration.
Streaks review

Questions people ask

Is Fastmail or Streaks better?
Neither clearly leads. Fastmail starts at $3/month and Streaks at $5.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastmail or Streaks?
Fastmail starts at $3/month and Streaks at $5.99/one-time.
Does Fastmail or Streaks run on more platforms?
Fastmail runs on Web, iOS, Android, macOS, Windows. Streaks runs on iOS.
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 Streaks is typically brought in for.
What can Fastmail do that Streaks cannot?
Fastmail covers Custom domain hosting, Masked email, Unlimited aliases, Integrated calendar and contacts. Streaks covers Streak tracking, Apple Health integration, Apple Watch app, Flexible scheduling.

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.

Streaks: Is Streaks a subscription?

No, it is a one-time App Store purchase, currently priced around 5.99 USD, with no recurring fee.

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.

Streaks: Does it work on Android?

No, it is iOS and Apple Watch only.

Fastmail: Can I use my own domain?

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

Streaks: Does it integrate with Apple Health?

Yes, habits tied to metrics like steps or sleep can auto-complete based on Apple Health data.

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