Newton Mail vs Polymail

Newton Mail

• People who want the same mail app on Mac, Windows, iPhone and Android
• Knowing whether a sent email was opened, and by which recipient
• Small teams that share a thread or a support@ address

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

Newton Mail

• The Free plan is limited to 2 email accounts, 15 read receipts a month, 3 templates and 20 AI actions a day.
• Shared inboxes need the Team plan, which has a 2-seat minimum and is offered through a Request Access button.
• There is no webmail: the web portal is for account and settings management only.
• A Linux build is linked from the homepage, but the pricing page lists apps for Mac, Windows, iPhone and Android only.

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.

Newton Mail

Read receipts

Sent emails are tracked without any extra step, with per-recipient open tracking. The Free plan includes 15 read receipts a month and Pro makes them unlimited.

Snooze and send later

Snooze takes an email out of the inbox until a time you choose and syncs across devices. Send Later schedules a message to arrive at a set time.

Shared threads

Share a whole conversation with teammates, comment privately beside it and let authorized people reply from your address, with an activity log. Creating shared threads needs Pro.

Newton AI

The Today view triages the inbox by priority and Compose helps write emails. Usage is capped at 20 AI actions a day on the Free plan and 200 on Pro.

Connected apps and MCP server

Save an email to Todoist, Evernote, OneNote, Trello or Asana in one click, and use the MCP server to search, read, draft and schedule email from Claude and other AI assistants.

One inbox for Gmail, Outlook and IMAP

Works with Gmail and Google Workspace, Outlook and Microsoft 365, and IMAP accounts such as iCloud, Yahoo and Fastmail, with full-text search across every account at once.

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.

Newton Mail

• Free$0

  2 email accounts with a unified inbox, snooze, send later and signatures, 3 templates, 15 read receipts a month and 20 AI actions a day.

• Pro$5

  per month, billed annually ($6.99 billed monthly)

  Unlimited email accounts, read receipts and templates, 200 AI actions a day, the ability to create shared threads, and priority email support.

• Team$12

  per user / month, billed annually ($15 billed monthly)

  Everything in Pro for each seat, plus 3 shared inboxes per workspace, send-as delegation, shared team templates and admin controls. 2 seats minimum.

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.

Newton Mail

• Annual discount

  Save 28% on Pro with annual billing

  Pro is $5 a month billed annually against $6.99 billed monthly, which the pricing page labels a 28% saving. Team is $12 a user a month annually against $15 monthly.

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.