Is Fastmail or Gamma better?

Neither clearly leads. Fastmail starts at $3/month and Gamma at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Fastmail or Gamma?

Gamma has a free tier; the other does not. Paid plans start at $3/month for Fastmail and Free for Gamma.

Does Fastmail or Gamma run on more platforms?

Fastmail runs on Web, iOS, Android, macOS, Windows. Gamma runs on Web, iOS, Android.

Can I use Gamma for free?

Yes. Gamma 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 Gamma is typically brought in for.

What can Fastmail do that Gamma cannot?

Fastmail covers Custom domain hosting, Masked email, Unlimited aliases, Integrated calendar and contacts. Gamma covers AI Slide Generation, Advanced Image Models, Custom Branding, API Access.

Productivity · head to head

Fastmail vs Gamma

Fastmail

Productivity

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

From: $3/month
Rated: -

Full review Website

Gamma

Productivity

AI-powered presentation and document creation software

From: Free
Rated: -

Full review Website

The short version

Only Gamma 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.; Gamma free plan limited to 400 non-renewable credits, requiring paid plan quickly
They diverge on capability: Fastmail covers Custom domain hosting, Gamma covers AI Slide Generation.
Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fastmail and Gamma actually diverge.

Attributes where Fastmail and Gamma differ
Attribute	Fastmail	Gamma
Starting price	$3/month	Free
Pricing model	Per user per month	Unknown
Free tier	No	Yes
Platforms	Web, iOS, Android, macOS, Windows	Web, iOS, Android

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 Gamma

AI Slide Generation
Advanced Image Models
Custom Branding
API Access
Custom Domains
Analytics
Studio Mode
AI Credits

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

Gamma

Rapid pitch deck creation for investor meetings and salesnot Fastmail
Generating report decks from company data and metricsnot Fastmail
Creating training and onboarding presentations automaticallynot Fastmail
Building product demos and case study presentationsnot Fastmail
Team collaboration on branded presentations with shared assetsnot 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.

Gamma

Free plan limited to 400 non-renewable credits, requiring paid plan quickly
Credit rollover capped at 2x monthly allocation, forcing month-to-month spending
Refund window limited to 3 days with usage thresholds restricting claims
Per-seat pricing on team plans increases costs for large organizations
Studio Mode limited to Ultra plan, restricting advanced editing to highest tier

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

Gamma

Free

FreeFree
- 400 AI credits (one-time, non-renewable)
- Up to 10 cards per prompt
- Basic AI
Plus$12/month
- 1,000 AI credits per month
- Up to 20 cards per prompt
- Badge removal on exports
Pro$25/month
- 4,000 AI credits per month
- Up to 50 cards per prompt
- Premium AI models
Ultra$100/month
- 20,000 AI credits per month
- Up to 75 cards per prompt
- Most advanced AI models

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 Gamma if

You need ai slide generation.
You want to start without paying.
You work on Web, iOS, Android.
You also want advanced image models.

Gamma review

Questions people ask

Is Fastmail or Gamma better?: Neither clearly leads. Fastmail starts at $3/month and Gamma at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastmail or Gamma?: Gamma has a free tier; the other does not. Paid plans start at $3/month for Fastmail and Free for Gamma.
Does Fastmail or Gamma run on more platforms?: Fastmail runs on Web, iOS, Android, macOS, Windows. Gamma runs on Web, iOS, Android.
Can I use Gamma for free?: Yes. Gamma 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 Gamma is typically brought in for.
What can Fastmail do that Gamma cannot?: Fastmail covers Custom domain hosting, Masked email, Unlimited aliases, Integrated calendar and contacts. Gamma covers AI Slide Generation, Advanced Image Models, Custom Branding, API Access.

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.

Gamma: How do Gamma AI credits work?

Each plan includes a monthly AI credit allowance. Free users receive 400 one-time credits. Plus plan includes 1,000 monthly credits, Pro includes 4,000 monthly credits, and Ultra includes 20,000 monthly credits. Unused credits roll over up to 2x the monthly allowance.

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.

Gamma: What is included in the Free plan?

The Free plan includes 400 AI credits (one-time), up to 10 cards per prompt, basic AI, Gamma branding on output, and 7-day change history.

Source

Fastmail: Can I use my own domain?

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

Gamma: What payment and refund options does Gamma offer?

Gamma offers a 3-day refund window for monthly plans if you have used less than 10-20 percent of your monthly credits depending on the plan.

Source

Gamma: How much do Team and Business plans cost?

Team plans cost $20 per seat per month with a minimum of 2 seats, including 6,000 AI credits per seat. Business plans cost $40 per seat per month with a minimum of 10 seats, including 10,000 AI credits per seat.

Source

Fastmail vs Gamma

Fastmail

Gamma

The short version

Where they differ

What each one covers

Only in Fastmail

Only in Gamma

What people use each for

Fastmail

Gamma

Where each one falls short

Fastmail

Gamma

Pricing, plan by plan

Fastmail

Gamma

Which should you pick?

Choose Fastmail if

Choose Gamma if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Fastmail

More on Gamma

Keep looking

Other head to heads