Apollo.io vs GMass Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated May 2026 8 min read

Apollo.io

0.0 (0 reviews)

Apollo.io is an all-in-one sales intelligence and engagement platform that helps you find, contact, and close your ideal customers using a massive database of verified business contacts.

Starting at Free
Free Trial 14 days
VS

GMass

0.0 (0 reviews)

GMass is a powerful email marketing and cold email solution that works directly inside your Gmail account to help you send mass campaigns and automated follow-ups easily.

Starting at Free
Free Trial NO FREE TRIAL

Quick Comparison

Feature Apollo.io GMass
Website apollo.io gmass.co
Pricing Model Freemium Freemium
Starting Price Free Free
FREE Trial ✓ 14 days free trial ✘ No free trial
Free Plan ✓ Has free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas mobile saas
Integrations Salesforce HubSpot Slack Gmail Outlook LinkedIn Zapier Marketo Pipedrive Copper Gmail Google Sheets Google Drive Salesforce HubSpot
Target Users solopreneur small-business mid-market enterprise solopreneur small-business mid-market
Target Industries
Customer Count 0 0
Founded Year 2015 2015
Headquarters San Francisco, USA Chicago, USA

Overview

A

Apollo.io

Apollo.io is a comprehensive sales intelligence and engagement platform designed to help you streamline your entire outbound sales process. You can access a database of over 275 million contacts to find your ideal prospects and use built-in engagement tools to reach out to them directly. It eliminates the need for multiple disconnected tools by combining lead sourcing, email sequencing, and task management into a single interface.

You can automate your outreach with personalized email sequences and track every interaction to see what resonates with your audience. The platform also provides AI-powered insights to help you prioritize high-value leads and improve your conversion rates. Whether you are a solo founder or part of a large enterprise sales team, you can use these tools to build a predictable pipeline and hit your revenue targets faster.

strtoupper($product2['name'][0])

GMass

GMass turns your regular Gmail or Google Workspace account into a full-featured email marketing platform. You can send mass emails, create complex mail merges using Google Sheets data, and schedule automated follow-up sequences that stop once a recipient replies. It lives entirely inside your Gmail interface, so you don't have to learn a new dashboard or export your contacts to external software.

You can use it to bypass Gmail's sending limits by connecting to external SMTP services or stay within standard limits for smaller outreach. It solves the problem of low engagement by making every mass email look like a personal, one-on-one message. Whether you are a recruiter, salesperson, or non-profit organizer, you can manage your entire outreach strategy without ever leaving your inbox.

Overview

A

Apollo.io Features

  • B2B Contact Database Access over 275 million verified contacts and 73 million companies to build highly targeted lead lists for your outreach.
  • AI Writing Assistant Generate personalized cold emails in seconds using AI that adapts to your brand voice and prospect's specific pain points.
  • Automated Sequences Create multi-step outreach campaigns across email, phone, and LinkedIn to stay top-of-mind with your prospects automatically.
  • LinkedIn Extension Find direct phone numbers and verified email addresses while browsing LinkedIn profiles without ever leaving your browser tab.
  • Lead Scoring Use AI-driven insights to rank your leads based on their likelihood to buy so you focus on the best opportunities.
  • Built-in Dialer Make calls directly from the platform with local presence numbers and automatic call logging to keep your CRM updated.
strtoupper($product2['name'][0])

GMass Features

  • Google Sheets Integration. Connect your spreadsheets directly to Gmail to personalize every email with custom data fields from your rows.
  • Automated Follow-ups. Set up a sequence of emails that send automatically until your recipient replies, clicks, or opens your message.
  • Email Reporting. Track opens, clicks, and replies in real-time with detailed analytics reports generated right inside your Gmail account.
  • Behavior-based Campaigns. Send new emails specifically to people who opened or clicked your previous messages to maximize your conversion rates.
  • Scheduling. Draft your emails now and schedule them to go out at the exact time your prospects are most active.
  • List Segmentation. Filter your mailing lists based on past engagement to ensure you only message the most relevant contacts.

Pricing Comparison

A

Apollo.io Pricing

Free
$0
  • 10,000 email credits/month
  • 60 mobile credits/year
  • Basic sequence automation
  • LinkedIn extension
  • Gmail and Outlook integration
G

GMass Pricing

Free
$0
  • Up to 50 emails per day
  • All standard features included
  • Gmail-based sending
  • Basic campaign tracking
  • GMass branding on emails

Pros & Cons

M

Apollo.io

Pros

  • Massive database with high contact accuracy
  • Excellent browser extension for LinkedIn prospecting
  • Combines data and engagement in one tool
  • Very generous free tier for new users

Cons

  • Occasional bugs in the sequence automation
  • Customer support response times can be slow
  • Learning curve for complex filtering options
A

GMass

Pros

  • No new software to learn since it lives in Gmail
  • Powerful Google Sheets integration for easy personalization
  • Reliable automated follow-up sequences increase reply rates
  • High deliverability by using Google's own mail servers
  • Simple setup process takes less than a minute

Cons

  • Requires Google Chrome to use the browser extension
  • Interface can feel cluttered inside the Gmail window
  • Daily sending limits are tied to Google's restrictions
x

Please claim profile in order to edit product details and view analytics. Provide your work email address to receive a verification link.

x

Please login in order to edit product details and view analytics.