Best Email productivity (Gmail & Outlook) Chrome extensions (2026)
The 20 most-used Email productivity (Gmail & Outlook) on the Chrome Web Store, ranked by real store users. Listings rated under 3 stars on 20+ ratings are left out. Gmail and Outlook add-ons: templates, tracking, snooze, send later, mail merge, unsubscribe, inbox cleanup.
Top 20 Email productivity (Gmail & Outlook), ranked
- 1
Mailtrack® – Email Tracker for Gmail
The original Mailtrack®: free, unlimited email tracking for Gmail. Trusted by millions, GDPR-compliant and Google-audited.
≈3M users4.4★ from 11.8K ratingsUpdated 5 days ago13 permissions - 2
Phish Alert Button
Chrome Extension to add phish reporting functionality to Gmail.
≈1M users2.4★ from 18 ratingsUpdated 10 months ago17 permissions - 3
HubSpot Sales
Email tracking, CRM for Gmail, and sales productivity tools in your inbox
≈1M users4.4★ from 8.2K ratingsUpdated 12 days ago10 permissions - 4
Checker Plus for Gmail™
Get notifications, read, listen to or delete emails without opening Gmail and easily manage multiple accounts.
≈1M users4.7★ from 12.7K ratingsUpdated 4 weeks ago16 permissions - 5
Boomerang for Gmail
Meeting scheduling and email management tool trusted by millions. Schedule meetings, track responses, send later, and more.
≈900K users4.2★ from 2.1K ratingsUpdated 2 weeks ago2 permissions - 6
Send from Gmail (by Google)
Makes Gmail your default email application and provides a button to compose a Gmail message to quickly share a link via email
≈700K users4.0★ from 4.1K ratingsNot updated for 2+ years6 permissions - 7
Streak CRM for Gmail
Manage sales and customer relationships directly inside Gmail.
≈700K users4.5★ from 6.5K ratingsUpdated 2 days ago10 permissions - 8
GMass: Powerful mail merge for Gmail
A powerful mass email and mail merge system for Gmail.
≈400K users4.8★ from 9.2K ratingsUpdated 6 days agoNo special permissions - 9
Gmail reverse conversation
The add-on reverse emails in conversation view.
≈300K users4.4★ from 343 ratingsUpdated 11 months agoNo special permissions - 10
Email Tracker + Pixelblock Detector & Blocker
Find out if your emails get read + pixelblock. Free & unlimited email tracking for Gmail, Outlook, Hotmail, Office 365 & Yahoo Mail
≈300K users4.6★ from 1.2K ratingsUpdated 5 weeks ago14 permissions - 11
MailTracker: Email tracker for Gmail
Track if your emails are opened & how many times. Be notified when your emails are read with our advanced Email Tracking extension.
≈200K users4.7★ from 5.3K ratingsUpdated 2 months ago5 permissions - 12
Notifier for Gmail™
Multiple label and account notifier for Google Mail (Gmail™)
≈200K users4.4★ from 965 ratingsUpdated 6 days ago10 permissions - 13
WiseStamp Email Signature Chrome Extension
WiseStamp email signature
≈200K users3.9★ from 1.6K ratingsUpdated in the last day4 permissions - 14
GIPHY for Gmail
Add the power of GIPHY to your Gmail experience. Search and discover the best GIFs for your every email need quickly and easily.
≈100K users3.4★ from 114 ratingsNot updated for 2+ years2 permissions - 15
Gmail App - Mail Application for Gmail™
Use Gmail app for Windows and Mac to boost productivity. Get notifications and read emails in Gmail desktop app for macOS and PC.
≈100K users4.4★ from 248 ratingsUpdated 7 days ago21 permissions - 16
Outlook Classroom Email
Redirect Google Classroom Emails to Outlook.
≈100K usersNot rated yetUpdated 18 months ago3 permissions - 17
Safety for Gmail™
Gmail™ に誤送信防止機能を追加します。
≈100K users3.9★ from 7 ratingsUpdated 11 days ago1 permissions - 18
Send Anywhere For Gmail
Ad-free from any platform, powerful link management and easy large files attachment to email freely
≈100K users4.1★ from 236 ratingsUpdated 6 months ago12 permissions - 19
GPT Workspace
Run GPT in Google Workspace: use ChatGPT into Google Slides, Docs, Sheets, Drive and Gmail.
≈100K users4.9★ from 11.1K ratingsUpdated 3 days ago7 permissions - 20
Mailvelope - Secure your email with PGP
Protect your email conversations and attachments on Gmail, Nextcloud, Outlook & more with PGP and end-to-end encryption.
≈100K users4.4★ from 436 ratingsUpdated 4 months ago8 permissions
Head-to-head comparisons
- Checker Plus for Gmail™ vs Boomerang for Gmail
- Boomerang for Gmail vs Send from Gmail (by Google)
- Boomerang for Gmail vs Streak CRM for Gmail
- Checker Plus for Gmail™ vs Send from Gmail (by Google)
- Checker Plus for Gmail™ vs Streak CRM for Gmail
- Send from Gmail (by Google) vs Streak CRM for Gmail
- Mailtrack® vs GMass
- GMass vs Notifier for Gmail™
Email productivity (Gmail & Outlook): questions
What is the most popular Email productivity (Gmail & Outlook) Chrome extension?
Mailtrack® – Email Tracker for Gmail is the most used, with ≈3M users and a 4.4-star rating. Phish Alert Button is next with ≈1M users.
Which Email productivity (Gmail & Outlook) extension has the best rating?
Of the listings with 100+ ratings, GPT Workspace rates highest: 4.9 out of 5 from 11.1K ratings.
Are these Email productivity (Gmail & Outlook) still maintained?
11 of the 20 listed here were updated in the last 30 days. Each card shows how recently it was updated.