5 Best MailTracker Alternatives in 2026

MailTracker is a Chrome extension that tells you when a Gmail message you sent has been opened. Its free plan — 20 tracked emails a month, no watermark — is genuinely useful if all you want is a quick email open signal.

It has two real limitations worth knowing before you install it, though. There’s a steep jump from the free plan to unlimited tracking: Starter costs $20/user/month billed annually, and Advanced — which adds support for up to 3 Gmail accounts plus AI-powered features — costs $39/user/month billed annually. There’s no lower-cost middle tier.

Additionally, its tracking is built around single messages rather than full conversations, so accuracy can drop once you’re several replies deep into a thread.

If either of those gives you pause, here are five alternatives worth comparing — all of them, like MailTracker itself, installable straight from the Chrome Web Store.

What to look for in a MailTracker alternative

• Open tracking accuracy. Apple Mail Privacy Protection prefetches tracking pixels for many iPhone and Mac recipients, which can inflate "opened" notifications regardless of which tool you use.
• Thread-level tracking. Some tools only track the most recent email in a Gmail conversation, which becomes a problem once you’re replying back and forth with a client.
• Room to grow beyond Chrome. If you might later need tracking in Outlook, Apple Mail, or on mobile, check whether the vendor offers that path.
• Pricing transparency. Look for a published pricing page with consistent numbers and a clear free-plan limit.
• What the free plan includes. Some free plans add a visible "Sent with…" signature to every email; others do not.

Quick comparison

1. Mailbutler

Mailbutler installs as a Chrome extension for Gmail and adds per-recipient tracking, smart scheduling, mobile-responsive signatures, and AI assistance to your inbox.

It also has dedicated apps for Outlook and Apple Mail, so the same subscription keeps working if you move past Chrome.

Pricing: Starter is free forever, though outgoing emails carry a visible watermark; removing it costs $4/user/month (annual billing). Professional runs $7/user/month and adds Inbox Collaboration — email assignments, shared notes and tasks, and tags. Smart runs $11/user/month and adds per-recipient tracking, smart follow-up suggestions, and an AI-powered email assistant. A custom-priced Business plan sits above Smart.

Key features:

• Advanced tracking that works across Gmail, Outlook, and Apple Mail
• Mail merge with dynamic placeholders in the subject line and body, plus per-recipient scheduling
• Shared inbox collaboration and signature templates with marketing banners

Use Mailbutler if: You want the Chrome extension now with room to add Outlook or Apple Mail later, or your team wants shared inbox collaboration built in.

Skip it if: You need enterprise-scale cold email volume.

2. Mailsuite (formerly Mailtrack)

Mailsuite is the rebranded version of Mailtrack, a long-running tracking tool that stays close to MailTracker’s original pitch: install the extension, see who opened your email.

Pricing: The free plan tracks emails with no cap but adds a promotional Mailtrack signature to every message. The entry paid tier removes the signature and adds a 7-day tracking history for €1.99/user/month billed annually. The top tier is €3.99/user/month billed annually and adds complete tracking history, group-email tracking, scheduled tracked emails, link and PDF click tracking, and email campaigns up to 60,000 recipients a month.

Key features:

• Unlimited open tracking on the free plan, unlike MailTracker’s 20-email monthly cap
• Group-email tracking plus link and PDF click tracking on the top tier
• Email campaigns with up to 60,000 recipients a month

Use Mailsuite if: You want the closest like-for-like swap for MailTracker — tracking-first and inexpensive.

Skip it if: You need the free plan to look unbranded.

3. Boomerang for Gmail

Boomerang is one of the oldest Gmail extensions on this list, best known for send-later scheduling and its Inbox Pause feature, with read tracking included.

Pricing: The free Basic plan includes 10 message credits a month; every scheduled send, reminder, or tracked message uses one. Personal is $4.98/month billed annually for Gmail personal accounts. Pro is $14.98/month billed annually for Google Workspace. Premium is $49.98/month billed annually and adds track-by-default and CRM integration.

Key features:

• Send-later scheduling and reminders that bring an email back to your inbox if no one replies
• Read receipts and response tracking
• Inbox Pause, which holds incoming mail so it cannot interrupt focused work

Use Boomerang for Gmail if: Scheduling and inbox management matter to you as much as tracking does.

Skip it if: You only want tracking; Gmail’s native "schedule send" now covers part of what Boomerang charges for.

4. Right Inbox

Right Inbox is a Chrome extension for Gmail built around scheduling, templates, and reminders, with tracking as one feature among several rather than the headline.

Pricing: The free Limited plan covers a small number of tracked emails, reminders, and templates. Professional is $7.95/month billed annually and unlocks unlimited tracking, recurring emails, and reminders. Team is $16.95/month billed annually, includes unlimited team members, and adds mail merge and CRM sync.

Key features:

• Unlimited open and click tracking on paid plans
• Send-later scheduling and recurring emails
• Private notes attached to email threads, visible only to you

Use Right Inbox if: You want scheduling, reminders, and tracking bundled into one lightweight extension.

Skip it if: You need shared inbox collaboration — Right Inbox’s Team plan doesn’t add the assignment and note-sharing workflows that dedicated shared inbox tools offer.

5. Streak

Streak turns Gmail into a full CRM using labels and pipelines, with email tracking and mail merge included as supporting features rather than the main product.

Pricing: A free plan includes unlimited email tracking, roughly 50 mail merges a day, and snippets, but no CRM pipelines. Pro is $49/user/month billed annually and adds shared pipelines and contact management. Pro+ is $69/user/month billed annually and adds automations. Enterprise is $129/user/month billed annually (10-user minimum).

Key features:

• Unlimited email tracking on the free plan, with no CRM required
• Sales pipelines built entirely from Gmail labels and threads
• Mail merge and email snippets

Use Streak if: You want a genuine CRM — pipelines, deal stages, contact records — without leaving Gmail.

Skip it if: You only want tracking; the CRM upsell path starts at $49/user/month, a steep jump from the other tools here.

Which MailTracker alternative should you choose?

The bottom line

MailTracker’s free plan is a fine starting point for an occasional email open signal on Gmail. But the jump to $20/user/month for unlimited tracking, and tracking that’s built around single messages rather than full threads, mean most people outgrow it quickly.

Mailsuite matches MailTracker’s simplicity almost exactly, which is the right call if open and click tracking is truly all you need.

But if you send from Outlook or Apple Mail as well, or you’re starting to work with a team on shared inboxes, Mailbutler covers both gaps from day one — tracking, mail merge with per-recipient scheduling, shared inbox collaboration, and branded signatures in one subscription.