1. Mailtrack
Read receipts and link tracking for Gmail.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Read receipts and link tracking for Gmail.
Best Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail Alternatives in 2026
Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
About Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail
Enhance your Gmail inbox today with a range of tools specially designed to boost your productivity. Are you tired of wasting your time manually sending multiple emails at once or are frustrated by never knowing if someone opened your email? Inbox Enhance solves these problems and many others by upgrading your Gmail inbox. Features: - Mail merge/mass email - send custom emails to a list of recipients with one click. - Email open tracking - see whether a recipient has opened your email. - Email thread notes - add notes to an email/email thread that only you can see. If you want to take your email use to the next level then take advantage of Inbox Enhance's valuable Gmail features today!
Comparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail (original) | 3.5 | 69 | Freemium | Mass email, mail merge, email tracking, and notes all in your Gmail inbox! |
| Mailtrack | 4.4 | 3M+ | Freemium | Salespeople and recruiters who need to know when an email was actually opened. |
| Google Mail Checker | 4.1 | 2M+ | Free | Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox. |
| Apollo.io: Free B2B Phone Number & Email Finder | — | — | Free | Apollo enables users to find contact info, connect with buyers, track emails, and more for free. |
| HubSpot Sales | — | — | Free | Email tracking, CRM for Gmail, and sales productivity tools in your inbox |
| Email Finder by ContactOut – Email Lookup Tool | 4.4 | 600K+ | Free | Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500. |
| Email Finder by Snov.io | 4.9 | 400K+ | Free | Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go. |
| GMass: Powerful mail merge for Gmail | 4.8 | 400K+ | Freemium | A powerful mass email and mail merge system for Gmail. |
| WiseStamp Email Signature Chrome Extension | 3.9 | 200K+ | Free | WiseStamp email signature |
| ClickUp: Tasks, Screenshots, Email, Time | — | — | Free | ClickUp is a productivity platform that makes your personal and work lives more productive, saving you time. |
| Briskine: Email templates for Gmail™ | 4.5 | 100K+ | Free | Write emails faster! Increase your productivity with templates and shortcuts on Gmail™, Outlook, or LinkedIn. |
Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail alternatives in detail
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2. Google Mail Checker
Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
3. Apollo.io: Free B2B Phone Number & Email Finder
Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
4. HubSpot Sales
Email tracking, CRM for Gmail, and sales productivity tools in your inbox
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Email tracking, CRM for Gmail, and sales productivity tools in your inbox
5. Email Finder by ContactOut – Email Lookup Tool
Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
6. Email Finder by Snov.io
Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go.
7. GMass: Powerful mail merge for Gmail
A powerful mass email and mail merge system for Gmail.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: A powerful mass email and mail merge system for Gmail.
8. WiseStamp Email Signature Chrome Extension
WiseStamp email signature
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: WiseStamp email signature
9. ClickUp: Tasks, Screenshots, Email, Time
ClickUp is a productivity platform that makes your personal and work lives more productive, saving you time.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: ClickUp is a productivity platform that makes your personal and work lives more productive, saving you time.
10. Briskine: Email templates for Gmail™
Write emails faster! Increase your productivity with templates and shortcuts on Gmail™, Outlook, or LinkedIn.
Why it replaces Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail: Covers similar ground in the Email category: Write emails faster! Increase your productivity with templates and shortcuts on Gmail™, Outlook, or LinkedIn.
Compare Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail head-to-head
Direct comparisons with the extensions people weigh against it.
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Frequently asked questions
What is the best alternative to Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail?
Mailtrack is the closest match. Covers similar ground in the Email category: Read receipts and link tracking for Gmail.
Is there a free alternative to Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail?
Yes — Google Mail Checker, Apollo.io: Free B2B Phone Number & Email Finder, HubSpot Sales are free.