ComparisonBulk email & mail merge

Best GMass Alternative — Outsolvi vs GMass

Looking for a GMass alternative? GMass is a mass email and mail merge tool built into Gmail. It focuses on bulk sending with tracking as a secondary feature. Popular with marketers and newsletter senders.

Outsolvi

from $7/mo

GMass

$20–50/mo

Feature Comparison

Feature

Outsolvi

GMass

Email open tracking

Link click tracking

Bot & scanner filtering

Confidence scoring (0–100)

Native Outlook add-in

Gmail extension

Unified Outlook + Gmail dashboard

AI follow-up insights

Mass mail merge

Auto follow-up to non-openers

Contact CRM with engagement scores

Hot lead detection

Reply sentiment analysis

Google Sheets integration

Starts under $10/mo

Why teams choose Outsolvi

Built for tracking intelligence, not bulk sending
Confidence scoring gives real open data — GMass counts every pixel load
Works in Outlook — GMass is Gmail-only
Hot lead detection and engagement scoring
Lighter weight — doesn't risk Gmail sending limits

Where GMass excels

Powerful mail merge from Google Sheets
Built for high-volume sending (thousands of emails)
Auto follow-up campaigns to non-openers
Email list management and bounce handling

Other comparisons

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