Top Chrome Extensions for Gmail Mass Email
Gmail Mass Email Chrome extensions — 340 monthly searches · Rankings shifted 46× in 7 days · Top 3 locked — dominated by incumbents
What Developers Can Learn
Intelligence derived from tracked keywords across all Gmail Mass Email sub-keywords
Most Congested
GMass holds rank 1 every day with 400K users and 9,100 reviews, while Mailmeteor sits at rank 3 with 50K users — together they absorb the majority of installs for generic mail-merge queries.
Competing head-on as another 'mail merge for Gmail' extension means fighting two deeply entrenched products with years of review momentum.
Possible Openings
Adjacent keywords like 'Gmail Backup' (3,300 monthly Google searches), 'Gmail Notifier' (3,300), and 'Gmail Email Forwarding' (3,100) have substantial demand and could be bundled with mass-email functionality to capture cross-query traffic.
The rise of Bulk Email Scheduler for Gmail (up 7 ranks this week) signals growing interest in scheduled bulk sending — a feature gap the top incumbents do not emphasize in their CWS positioning.
Positioning Patterns
Top-performing extensions include either 'Mail Merge' or 'Mass Email' in their names alongside 'Gmail', directly matching the search keyword.
Extensions from the cloudHQ ecosystem (MailKing, Bulk Email Reply, Multi Email Forward) rank across multiple positions by targeting related but distinct use cases with separate listings.
The highest-rated extensions (4.6–4.8 stars) pair strong review counts with Gmail-native UX, suggesting that polish and reliability matter more than feature breadth in this market.
Top Extensions Leaderboard
7-day ranking snapshot and appearances in Top 10
| # | Extension | Users | Rating | Appearances | Category | Momentum |
|---|---|---|---|---|---|---|
| 1 |  GMass: Powerful mail merge for Gmail | 400,000+ | ⭐ 4.8 | 6/7d | Gmail | — stable |
| 2 |  Mail Merge for Gmail & Mass Email Sender - EmailMassa | 78 | ⭐ 5 | 6/7d | Gmail | — stable |
| 3 |  Mail Merge for Gmail - Mailmeteor | 50,000+ | ⭐ 4.8 | 6/7d | Gmail | — stable |
| 4 |  Mass Email Sender | 464 | ⭐ 3.8 | 6/7d | Gmail | — stable |
| 5 |  Email Marketing Campaigns in Gmail: Gumbamail | 5,000+ | ⭐ 3.6 | 6/7d | Gmail | ↓ dropping |
| 6 |  Gmail Mass Unsubscribe & Delete Emails - InboxPurge | 20,000+ | ⭐ 4.7 | 6/7d | Gmail | ↓ dropping |
| 7 |  MassMerge: Latest mail merge for Gmail | 322 | ⭐ 4.6 | 4/7d | Gmail | ↓ dropping |
| 8 |  Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail | 72 | ⭐ 3.5 | 5/7d | Gmail | ↓ dropping |
| 9 |  Email Tracking for Gmail and Mass Emailing | 333 | ⭐ 4.8 | 5/7d | Gmail | ↓ dropping |
| 10 |  MailKing: Email Campaigns in Gmail by cloudHQ | 10,000+ | ⭐ 4.6 | 6/7d | Gmail | ↑ rising |
GMass: Powerful mail merge for Gmail
400,000+ · ⭐ 4.8 · 6/7d
Mail Merge for Gmail & Mass Email Sender - EmailMassa
78 · ⭐ 5 · 6/7d
Mail Merge for Gmail - Mailmeteor
50,000+ · ⭐ 4.8 · 6/7d
Mass Email Sender
464 · ⭐ 3.8 · 6/7d
Email Marketing Campaigns in Gmail: Gumbamail
5,000+ · ⭐ 3.6 · 6/7d
Gmail Mass Unsubscribe & Delete Emails - InboxPurge
20,000+ · ⭐ 4.7 · 6/7d
MassMerge: Latest mail merge for Gmail
322 · ⭐ 4.6 · 4/7d
Inbox Enhance - mail merge, mass email, email tracking and notes for Gmail
72 · ⭐ 3.5 · 5/7d
Email Tracking for Gmail and Mass Emailing
333 · ⭐ 4.8 · 5/7d
MailKing: Email Campaigns in Gmail by cloudHQ
10,000+ · ⭐ 4.6 · 6/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-06-30 to 2026-07-06)
✦ Entered Top 10 This Week
↓ Dropped Out of Top 10
Data Methodology
- Data source:
- Chrome Web Store search results
- Update frequency:
- Weekly
- Monthly Search Demand:
- Estimated demand indicator sourced from third-party keyword data. Not CWS-internal figures.
Is your extension visible
in Gmail Mass Email extension market?
Track your extension's ranking for any Gmail Mass Email keyword, monitor weekly changes, and find the exact gaps between you and the top 10.