MailStackDB
33+ Tools ReviewedUpdated March 2026Independent & Unbiased

GMass

Mass email and cold outreach directly inside Gmail.

4.0
From $25/mosubscriptionFounded 2015
Best for solo foundersBest for small teamsBest for Gmail users

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GMass Review

GMass is a mass email and cold outreach directly inside gmail. It is one of the leading tools in the cold email platforms space, designed for solo founders, small teams, Gmail users. Key features include Bounce detection, ab testing, Open and click tracking, Team plans, Auto follow-ups. GMass has built a strong reputation for reliability and performance in the cold email infrastructure ecosystem. The platform is well-suited for teams that need solo founders capabilities without sacrificing deliverability or ease of use. Whether you are scaling an outreach operation or optimizing an existing one, GMass provides the tools and infrastructure to do it effectively. GMass integrates with popular tools in the cold email stack, making it easy to fit into existing workflows. The pricing is competitive for the feature set offered, and the platform is regularly updated with new capabilities based on user feedback. For teams evaluating cold email platforms solutions, GMass is worth serious consideration. It balances features, pricing, and usability in a way that works for both beginners and experienced cold email operators.

GMass Pricing

Standard

$25/mo
  • Unlimited emails via Gmail

Premium

$35/mo
  • Sequences, A/B testing

Professional

$55/mo
  • Priority support

Features

FeatureStatusDetails
Email Warmup
SMTP Rotation
Inbox Rotation
Email VerificationBounce detection
A/B Testing
AnalyticsOpen and click tracking
CRM Integrations
API Access
Team FeaturesTeam plans
Deliverability Monitoring
Spintax Support
SubsequencesAuto follow-ups
Lead Database
Unified Inbox
Custom Tracking Domain

Pros & Cons

Pros
  • Works directly inside Gmail
  • Very easy to use
  • Affordable pricing
  • Good for mail merge
Cons
  • Gmail-only (no Outlook)
  • No warmup or inbox rotation
  • Limited at scale
  • No SMTP support
  • Basic analytics

Compare GMass With Alternatives

Ready to try GMass?

Mass email and cold outreach directly inside Gmail.