Polymail vs Spark Mail

Polymail

• Founders and salespeople who run their deals from the inbox
• Replacing separate tracking, scheduling and outreach add-ons with one app
• Managing several Gmail, Outlook or iCloud accounts in one inbox

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

Polymail

• There is no free plan: after the 7-day trial a paid plan is needed to keep using the app.
• Basic connects only 2 email accounts; sequences and up to 20 accounts need Premium at $24 per user / month, billed yearly.
• The download page offers Mac, Windows and iOS apps only, alongside the web app; no Android or Linux app is listed.
• Salesforce integration, SAML single sign-on and advanced analytics are limited to the custom-priced Enterprise 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.

Polymail

Email tracking

Per-recipient open tracking plus link and attachment tracking, with every open, click and download timestamped in a searchable activity feed.

Follow-up reminders and Read Later

A reminder returns a thread to the inbox if nobody replies within a set time, and Read Later moves non-urgent mail away until the date and time you choose.

Send later and templates

Schedule an email for later delivery, even while offline, and reuse message templates with placeholders. Premium lets a team share templates.

Sequences

Automated, personalized follow-up emails for outbound outreach, run from the inbox rather than a separate sales tool. Sequences are part of the Premium plan.

Calendar scheduling

Share your availability so contacts can book a time without back-and-forth, and send calendar invites from the app. Basic includes 1 calendar page and Premium 5.

Shared conversations

Comments and mentions let teammates discuss a thread privately, with permission controls, instead of forwarding it or adding people on BCC.

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.

Polymail

• Basic$10

  per month, billed yearly ($13 billed monthly)

  Up to 2 connected accounts, email tracking with an activity feed, follow-up reminders, send later, read later and message templates.

• Premium$24

  per user / month, billed yearly ($29 billed monthly)

  Everything in Basic, plus up to 20 connected accounts, automated sequences and calendar scheduling with 5 calendar pages.

• EnterpriseCustom

  Everything in Premium, plus a Salesforce integration, SAML single sign-on, advanced analytics, and live training with phone support.

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.

Polymail

• Annual discount

  About 20% less with annual billing

  Basic is $10 a month billed yearly against $13 monthly, and Premium $24 a user a month ($288 a year) against $29. The pricing FAQ puts the saving at roughly 20%.

• Education

  Education Plan for students and educators

  Verified students, teachers and school staff pay $78 a year for Basic or $174 a year for Premium, which Polymail describes as 50% off, after emailing proof of status.

• Nonprofit

  40% off annual plans for nonprofits

  Registered nonprofits with valid charitable status can apply by email for a permanent 40% discount on any annual subscription. Schools and some other groups are excluded.

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.