Top Chrome Extensions for Mail Merge Gmail
Mail Merge Gmail Chrome extensions — 9K monthly searches · Rankings shifted 40× in 7 days · Top 3 locked — dominated by incumbents
What Developers Can Learn
Intelligence derived from tracked keywords across all Mail Merge Gmail sub-keywords
Most Congested
Highly concentrated market (0.914 ratio) where GMass dominates with 400K users—40x more than the #2 and #3 players.
The gap between GMass's 4.8 rating and the third-placed Mail Merge for Gmail's 2.7 reveals that users reward quality severely; a weak rating at this scale is disqualifying.
Possible Openings
Email tracking keywords ('Email Tracking Gmail' at 14.8K, 'Gmail Email Tracker' at 14.3K, 'Email Tracking In Gmail' at 14.1K) carry comparable search volume but represent distinct functionality, and 'Gmail Dark Mode' (11.3K) shows strong Gmail-adjacent demand with no mail merge competition.
Positioning Patterns
Top performers (GMass, Streak) both hold 4.8 stars, creating a 4.4 average bar for top 5.
All top 3 embed 'mail merge' and 'Gmail' explicitly in titles.
The market rewards feature depth—GMass's 400K users suggest professional-grade capabilities outweigh marketing.
Top Extensions Leaderboard
7-day ranking snapshot and appearances in Top 10
| # | Extension | Users | Rating | Appearances | Category | Momentum |
|---|---|---|---|---|---|---|
| 1 |  Mail Merge for Gmail | 10,000+ | ⭐ 2.7 | 7/7d | Gmail | — stable |
| 2 |  GMass: Powerful mail merge for Gmail | 400,000+ | ⭐ 4.8 | 7/7d | Gmail | — stable |
| 3 |  Streak Mail Merge for Gmail | 10,000+ | ⭐ 4.8 | 7/7d | Gmail | — stable |
| 4 |  MergeMail | 30,000+ | ⭐ 4.9 | 7/7d | Gmail | — stable |
| 5 |  Salesforza Gmail Mail Merge & CRM on GSheets | 823 | ⭐ 4.6 | 7/7d | Gmail | — stable |
| 6 |  MassMerge: Latest mail merge for Gmail | 356 | ⭐ 4.6 | 7/7d | Gmail | — stable |
| 7 |  FullMail: Smart Mail Merge Inside Gmail | 21 | ⭐ 0 | 6/7d | Gmail | — stable |
| 8 |  MailFlow Pro: Mail Merge Gmail Outlook | 82 | ⭐ 5 | 7/7d | Gmail | ↑ rising |
| 9 |  EZMailer: Mail Merge for Gmail & Bulk Email Sender | 8 | ⭐ 0 | 7/7d | Gmail | ↓ dropping |
| 10 |  Send Mass Mail + HTML inserter for Gmail | 8,000+ | ⭐ 4.7 | 6/7d | Gmail | — stable |
Mail Merge for Gmail
10,000+ · ⭐ 2.7 · 7/7d
GMass: Powerful mail merge for Gmail
400,000+ · ⭐ 4.8 · 7/7d
Streak Mail Merge for Gmail
10,000+ · ⭐ 4.8 · 7/7d
MergeMail
30,000+ · ⭐ 4.9 · 7/7d
Salesforza Gmail Mail Merge & CRM on GSheets
823 · ⭐ 4.6 · 7/7d
MassMerge: Latest mail merge for Gmail
356 · ⭐ 4.6 · 7/7d
FullMail: Smart Mail Merge Inside Gmail
21 · ⭐ 0 · 6/7d
MailFlow Pro: Mail Merge Gmail Outlook
82 · ⭐ 5 · 7/7d
EZMailer: Mail Merge for Gmail & Bulk Email Sender
8 · ⭐ 0 · 7/7d
Send Mass Mail + HTML inserter for Gmail
8,000+ · ⭐ 4.7 · 6/7d
Ranking Volatility - Top 10 Ranks
7-day Top 10 movement snapshot (2026-05-12 to 2026-05-18)
✦ 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 Mail Merge Gmail extension market?
Track your extension's ranking for any Mail Merge Gmail keyword, monitor weekly changes, and find the exact gaps between you and the top 10.