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HEY vs Spark Mail

Price, platforms and features side by side. The table says where each price was read and when.

HEY

Email service and calendar with sender screening, from 37signals

Free trial · from $99/yr

Spark Mail

Email client with a unified smart inbox, AI tools and team features

Free plan · from $8.25/mo

Where they differ

  • HEY starts at $99 per year (HEY for You, annual billing only). Spark Mail starts at $8.25 per user / month, billed annually ($99 / year).
  • Spark Mail has a free plan. HEY does not, though it has a free trial.
  • Only HEY lists a web app.
  • Only HEY lists a Linux app.
  • Spark Mail also covers meeting notes and shared inbox.
In commonmacOSWindowsiOSAndroidTemplatesCalendarEmail client

At a glance

HEYSpark Mail
PricingFree trialFree plan
Starts at$99 per year (HEY for You, annual billing only)$8.25 per user / month, billed annually ($99 / year)
Free planNoneUnlimited email accounts in a unified Smart Inbox with snooze, send later, reminders and calendar, plus 5 AI meeting notes in total and an AI Assistant preview limited to 1 month of email history.
Free trial30-day free trial of HEY for You, no credit card required. HEY for Domains has no free trial.7-day free trial of Plus and Pro when you subscribe directly in the app
Web
macOS
Windows
Linux
iOS
Android
Made by37signals LLCSpark Mail Limited
Price read fromhey.comsparkmailapp.com
CheckedOct 4, 2026Oct 4, 2026

Who each one suits

HEY

  • People ready to move to a new email address and a different inbox routine
  • Anyone who wants to approve senders before they can reach the inbox
  • Small teams that want email on their own domain with thread sharing

Spark Mail

  • People juggling several email accounts across desktop and phone
  • Individuals who want a free client with a unified inbox and send later
  • Small teams that want to comment on emails and draft replies together

Worth knowing

HEY

  • HEY is its own email provider, not a client for Gmail or Outlook; existing mail history is not imported, only forwarded going forward.
  • IMAP and POP are not supported, so HEY works only in its own apps.
  • HEY for You is billed annually only, and HEY for Domains is billed monthly with no free trial.
  • There is no free plan.

Spark Mail

  • The vendor lists apps for Mac, Windows, iOS and Android only; there is no web or Linux version.
  • Gatekeeper, Priority, Spark +AI and third-party integrations require Plus or higher.
  • Shared inboxes, read statuses and the HubSpot integration are limited to Pro and Enterprise.
  • The free plan's AI is a limited preview: 5 meeting notes in total and 1 month of email history for the AI Assistant.

Key features

HEY

The Screener
First-time senders land in the Screener, where you approve or block them before any of their email can reach your Imbox.
Imbox, The Feed and Paper Trail
Mail from approved senders goes to the Imbox, newsletters are shown in a feed-style reader, and receipts and confirmations are filed in the Paper Trail.
Reply Later and Set Aside
Move emails that need an answer into a Reply Later pile and work through them in Focus & Reply. Set Aside keeps messages on hand for reference.
HEY Calendar
A calendar is included with HEY for You and HEY for Domains and lives in the same apps as email.
Spy pixel blocker
Blocks tracking pixels in incoming email and identifies the companies trying to track whether you opened a message.
Workflows and Collections
Workflows track an email through stages you define, and Collections bring several related threads together on one page.

Spark Mail

Smart Inbox and unified inbox
Brings every connected account into one inbox and separates priority mail from newsletters and notifications. Included in the free plan.
Gatekeeper and Priority
Gatekeeper lets you accept or block new senders before they land in the inbox, and Priority highlights chosen senders. Both are part of Plus and above.
Spark +AI and AI Assistant
+AI drafts, proofreads, summarizes and translates email. The AI Assistant answers questions about your mail, reaching back 1 month on Free, 1 year on Plus and without limit on Pro.
Snooze, Send Later and reminders
Snooze a message, set it aside, schedule a send or get a follow-up reminder. These scheduling tools are in the free plan.
Team collaboration
Share a thread with teammates, discuss it in private comments and write drafts together in real time. Shared inboxes for addresses such as support@ need Pro.
Calendar and AI meeting notes
A built-in calendar can add Zoom, GoTo or Microsoft Teams call links. AI meeting notes are capped at 5 in total on Free and 40 a month on Plus, and unlimited on Pro.

Plans

HEY

  • HEY for You$99

    per year

    A personal @hey.com address with HEY Calendar, 100GB of storage, apps on every platform and a HEY World blog.

  • HEY for Domains$12

    per user / month, billed monthly ($10 for the first user)

    Email on your own domain for multiple users, with thread sharing, private team comments and email aliases.

  • HEY for Families$179

    per year, in total

    Adds up to 4 additional people, each with their own @hey.com address, calendar and account.

Spark Mail

  • Free$0

    Unlimited accounts, Smart Inbox, unified inbox, snooze, send later, reminders, calendar and 5 lifetime AI meeting notes.

  • Plus$8.25

    per user / month, billed annually ($99); $10 billed monthly

    Adds Gatekeeper, Priority, Spark +AI, the AI Assistant with 1 year of history, 40 AI meeting notes a month, integrations and team collaboration.

  • Pro$16.58

    per user / month, billed annually ($199); $20 billed monthly

    Everything in Plus, plus shared inboxes, read statuses, unlimited AI meeting notes, HubSpot integration and Spark CLI triage access.

  • EnterpriseCustom

    Everything in Pro, plus security and controls, a dedicated success manager and 1:1 productivity coaching.

Ways to pay less

HEY

No public discounts listed.

Spark Mail

  • Annual discount

    Save 17% with annual billing

    The pricing page shows Plus at $99 a year instead of $120 and Pro at $199 a year instead of $240 when billed annually, a 17% saving over paying monthly.

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