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Productivity · head to head

Gamma vs Spark Mail

Gamma logo

Gamma

Productivity

AI-powered presentation and document creation software

From
Free
Rated
-
Full reviewWebsite
Spark Mail logo

Spark Mail

Productivity

AI-assisted email client from Readdle with a Smart Inbox and team collaboration features

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Gamma free plan limited to 400 non-renewable credits, requiring paid plan quickly; Spark Mail several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
  • They diverge on capability: Gamma covers AI Slide Generation, Spark Mail covers Smart Inbox.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Gamma and Spark Mail actually diverge.

Attributes where Gamma and Spark Mail differ
AttributeGammaSpark Mail
Pricing modelUnknownPer user per month
PlatformsWeb, iOS, AndroidmacOS, Windows, iOS, Android, Web

Identical on both: starting price (Free), free tier (Yes), 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 Gamma

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

Only in Spark Mail

  • Smart Inbox
  • AI Copilot
  • AI Summaries
  • Team collaboration
  • Send later and snooze
  • Multi-account unified inbox

What people use each for

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

Gamma

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

Spark Mail

  • A freelancer juggling Gmail and Outlook accounts who wants one AI-assisted inboxnot Gamma
  • A small support team sharing a single inbox with internal notes before replyingnot Gamma
  • Someone who wants drafts and summaries generated without switching to a new mail hostnot Gamma
  • A user who wants notification triage without writing their own filtersnot Gamma

Where each one falls short

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

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

Spark Mail

  • Several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
  • It is a client over accounts you still pay for elsewhere, so the total cost is Spark plus whatever Gmail, Outlook or Fastmail plan you already hold.
  • The free tier lacks AI Copilot and summaries, so the features it is best known for sit behind the paid plan.
  • Team features are basic next to dedicated shared-inbox tools like Front or Help Scout, so a support team scaling past a few agents will likely outgrow it.
  • Windows and Android versions have historically lagged the macOS and iOS apps in feature parity.

Pricing, plan by plan

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

Spark Mail

Free
  • BasicFree
    • Unlimited accounts
    • Smart Inbox
    • Basic send later
  • Premium$7.99/month
    • AI Copilot and summaries
    • Unlimited snooze and send later
    • Priority support
  • Premium Teams$10/month
    • Shared inboxes
    • Delegation and internal comments
    • Admin controls

Which should you pick?

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

Choose Spark Mail if

  • You need smart inbox.
  • You want to start without paying.
  • You work on macOS, Windows, iOS, Android, Web.
  • You also want ai copilot.
Spark Mail review

Questions people ask

Is Gamma or Spark Mail better?
Neither clearly leads. Gamma starts at Free and Spark Mail at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Gamma or Spark Mail?
Gamma starts at Free and Spark Mail at Free.
Does Gamma or Spark Mail run on more platforms?
Gamma runs on Web, iOS, Android. Spark Mail runs on macOS, Windows, iOS, Android, Web.
Can I use Gamma for free?
Both have a free tier, so you can try either at no cost before committing.
What is Gamma best used for?
Gamma is most often used for rapid pitch deck creation for investor meetings and sales, generating report decks from company data and metrics, creating training and onboarding presentations automatically, building product demos and case study presentations. Of those, rapid pitch deck creation for investor meetings and sales and generating report decks from company data and metrics are not what Spark Mail is typically brought in for.
What can Gamma do that Spark Mail cannot?
Gamma covers AI Slide Generation, Advanced Image Models, Custom Branding, API Access. Spark Mail covers Smart Inbox, AI Copilot, AI Summaries, Team collaboration.

Answered from the vendors’ own pages

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
Spark Mail: Does Spark host my email?

No. It is a client that connects to Gmail, Outlook, iCloud or any IMAP account; you still need a mail host.

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
Spark Mail: Does Spark store my email credentials on its servers?

For some features, including cross-device snooze and send-later sync, yes. It is part of how those features stay consistent across devices.

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
Spark Mail: Is there a one-time purchase option?

No, Spark is subscription only for individuals and teams; the base client is free but AI and unlimited scheduling need Premium.

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
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