Softwr

Productivity · head to head

Spark Mail vs Superhuman

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
Superhuman logo

Superhuman

Technology

The fastest email experience ever made

From
$30/month
Rated
-
Full reviewWebsite

The short version

  • Only Spark Mail has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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.; Superhuman high pricing compared to free alternatives like Gmail
  • They diverge on capability: Spark Mail covers Smart Inbox, Superhuman covers Blazing fast performance.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Spark Mail and Superhuman differ
AttributeSpark MailSuperhuman
Starting priceFree$30/month
Pricing modelPer user per monthUnknown
Free tierYesNo
PlatformsmacOS, Windows, iOS, Android, WebWeb, iOS
CategoryProductivityTechnology
FoundedUnknown2015

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

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 Spark Mail

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

Only in Superhuman

  • Blazing fast performance
  • Keyboard-first design
  • AI-powered triage
  • Split inbox
  • Read statuses
  • Remind me later
  • Social insights
  • Calendar integration

What people use each for

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

Spark Mail

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

Superhuman

  • Email managementnot Spark Mail
  • Inbox zeronot Spark Mail
  • Team collaborationnot Spark Mail
  • Sales outreachnot Spark Mail
  • Executive communicationnot Spark Mail

Where each one falls short

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

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.

Superhuman

  • High pricing compared to free alternatives like Gmail
  • Lacks unified inbox for managing multiple email accounts in a single view
  • Limited calendar functionality compared to dedicated scheduling tools
  • No native task management features

Pricing, plan by plan

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

Superhuman

$30/month
  • Starter$30/month
    • Email productivity
    • Superhuman AI
    • Team collaboration
  • Business$40/month
    • Auto Drafts
    • Ask AI
    • CRM integrations

Which should you pick?

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

Choose Superhuman if

  • You need blazing fast performance.
  • You work on Web, iOS.
  • You also want keyboard-first design.
Superhuman review

Questions people ask

Is Spark Mail or Superhuman better?
Neither clearly leads. Spark Mail starts at Free and Superhuman at $30/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Spark Mail or Superhuman?
Spark Mail has a free tier; the other does not. Paid plans start at Free for Spark Mail and $30/month for Superhuman.
Does Spark Mail or Superhuman run on more platforms?
Spark Mail runs on macOS, Windows, iOS, Android, Web. Superhuman runs on Web, iOS.
Can I use Spark Mail for free?
Yes. Spark Mail has a free tier, so you can try it without paying. Superhuman starts at $30/month.
What is Spark Mail best used for?
Spark Mail is most often used for a freelancer juggling gmail and outlook accounts who wants one ai-assisted inbox, a small support team sharing a single inbox with internal notes before replying, someone who wants drafts and summaries generated without switching to a new mail host, a user who wants notification triage without writing their own filters. Of those, a freelancer juggling gmail and outlook accounts who wants one ai-assisted inbox and a small support team sharing a single inbox with internal notes before replying are not what Superhuman is typically brought in for.
What can Spark Mail do that Superhuman cannot?
Spark Mail covers Smart Inbox, AI Copilot, AI Summaries, Team collaboration. Superhuman covers Blazing fast performance, Keyboard-first design, AI-powered triage, Split inbox.

Answered from the vendors’ own pages

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.

Superhuman: How much does Superhuman cost?

Superhuman offers three plans: Starter at $30/user/month, Business at $40/user/month, and Enterprise with custom pricing. Annual billing provides approximately 16.7% savings, bringing the Starter plan to $25/month.

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.

Superhuman: What email platforms does Superhuman work with?

Superhuman is compatible with Gmail and Outlook, and integrates with Google Calendar and Akiflow for calendar and task planning workflows.

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.

Superhuman: Does the Business plan include CRM integrations?

Yes, the Business plan at $40/month unlocks CRM integrations with HubSpot and Salesforce, along with advanced AI features like Auto Drafts and Ask AI.

Source
Superhuman: What happened to Superhuman after the Grammarly acquisition?

Superhuman was acquired by Grammarly on July 1, 2025. The company now operates under the Superhuman name while integrating with Grammarly's AI platform.

Source
Share

Related pages

More on Spark Mail

More on Superhuman

Keep looking

Other head to heads