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Best Email Tracking Apps for Gmail and Outlook
Email remains the backbone of professional communication, but the standard inbox gives you almost no insight into what happens after you hit send. Did the recipient open your message? Did they click the link to your proposal? Have they read your follow-up, or is it sitting unnoticed in a crowded inbox? Email tracking apps answer these questions, transforming email from a one-way broadcast into a measurable, data-driven communication channel.
For WordPress site owners, agency teams, freelancers, and anyone who relies on email for client communication, sales outreach, or partnership development, email tracking provides the visibility needed to follow up at the right time, prioritize engaged contacts, and refine messaging based on actual recipient behavior.
This guide covers nine of the best email tracking apps for Gmail and Outlook, comparing their features, pricing, and ideal use cases to help you choose the right tool for your workflow.
Best Email Tracking Apps for Gmail and Outlook
1. Mixmax
Mixmax goes beyond basic email tracking to serve as a comprehensive email productivity platform. Built primarily for Gmail, it combines open and click tracking with calendar scheduling, email polls and surveys, automated follow-up sequences, and CRM integration.
The platform integrates natively with Salesforce and Slack, making it a natural choice for teams that already use these tools. When a tracked email is opened, Mixmax can push a notification directly to your Slack channel, enabling real-time follow-up without switching between applications.
Key Features:
- Real-time open and click tracking with desktop and Slack notifications
- One-click calendar scheduling embedded directly in emails
- Email polls, surveys, and interactive content within Gmail
- Automated multi-step follow-up sequences with conditional logic
- Native integration with Gmail, Salesforce, and Slack
- Free tier includes 100 tracked emails; paid plans from $29 to $69 per month
Mixmax is best suited for sales teams and agencies that need more than just tracking - it is a full email workflow automation platform.
2. Mailtrack
Mailtrack is one of the simplest and most popular email tracking solutions for Gmail users. Its signature feature is the double-checkmark system, inspired by messaging apps, that shows whether your email has been delivered and read. A single checkmark means delivered; double checkmarks mean opened.
The tool adds minimal complexity to your Gmail workflow. Once installed as a Chrome extension, it automatically tracks every outgoing email unless you manually disable tracking for a specific message. Pop-up notifications alert you the moment a recipient opens your email.
Key Features:
- Visual checkmark indicators showing delivery and read status directly in Gmail
- Real-time pop-up notifications when emails are opened
- Daily and weekly email activity reports
- Link click tracking in paid plans
- Free unlimited tracking (with Mailtrack signature); paid plans from $2.99 to $9.99 per month remove branding and add features
Mailtrack is ideal for individuals and small teams who want straightforward open tracking without the complexity of a full sales platform.
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3. MailTracker by Hunter
MailTracker, built by Hunter.io, provides clean, free email tracking for Gmail without any usage limits or premium upsells on core tracking features. It notifies you when recipients open your emails and tells you how many times the email was opened, helping you gauge the level of interest.
As part of the Hunter.io ecosystem, MailTracker complements Hunter’s email finder and verification tools, creating a streamlined workflow for outreach campaigns. Find a contact’s email with Hunter, send a tracked message with MailTracker, and monitor engagement - all within a single toolset.
Key Features:
- Unlimited free email open tracking
- Open count tracking showing how many times each email was viewed
- Real-time browser notifications on email opens
- Activity dashboard with email engagement history
- Integration with Hunter.io’s email finding and verification suite
MailTracker is perfect for freelancers and outreach professionals who want reliable tracking without paying for features they do not need.
4. Vocus
Vocus positions itself as a Gmail productivity suite that combines email tracking with prospecting, scheduling, and follow-up automation. Its standout feature is the ability to find email addresses within organizations directly from your Gmail interface, eliminating the need to switch to a separate prospecting tool.
Key Features:
- Email open and click tracking with real-time notifications
- Built-in contact finder for identifying email addresses within target organizations
- Email scheduling for optimal send-time delivery
- Automated follow-up reminders based on recipient activity
- 30-day free trial; paid plans from $5 to $20 per month
Vocus works well for WordPress agency owners and freelance developers who manage client outreach and need combined prospecting and tracking in a single Gmail extension.
5. Boomerang
Boomerang is one of the longest-running email productivity tools, offering email scheduling, tracking, and inbox management for both Gmail and Outlook. Its signature feature is the ability to “boomerang” emails back to the top of your inbox at a specified time, ensuring important messages do not get buried.
Key Features:
- Email scheduling with send-later functionality for optimal timing
- Read receipt tracking with open notifications
- Inbox pause feature to reduce distractions during focused work
- Follow-up reminders if recipients do not respond within a set timeframe
- AI-powered writing assistance that suggests improvements to email tone and clarity
- Free plan includes 10 message credits per month; paid plans from $4.99 to $49.99 per month
Boomerang is particularly valuable for professionals who manage high-volume email correspondence and need tools to maintain inbox discipline alongside tracking capabilities.
6. MailTag
MailTag delivers real-time email tracking with a focus on performance analytics. Beyond simple open notifications, it provides dashboards showing open rates, click rates, and engagement patterns across all your tracked emails. This data helps you identify which subject lines, send times, and message formats generate the best responses.
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Key Features:
- Real-time desktop alerts when emails are opened or links are clicked
- Email engagement analytics with open and click rate dashboards
- Scheduled email sending with delayed delivery options
- Automated personalized follow-up sequences
- Email signature management
- Free plan available; Pro plan at $12.99 per month
MailTag suits WordPress professionals who want to optimize their email outreach strategy based on measurable engagement data rather than guesswork.
7. Salesmate
Salesmate is a full CRM platform that includes email tracking as part of its broader sales management suite. Unlike standalone tracking tools, Salesmate connects email activity to deal pipelines, contact records, and team performance metrics, providing a complete view of how email engagement translates into sales outcomes.
Key Features:
- Email open and click tracking integrated with CRM contact records
- Shared team inbox for collaborative email management
- Built-in calling and texting alongside email tracking
- Email template library with bulk sending capability
- Sales pipeline visualization with email activity context
- Plans start at $23 per user per month
Salesmate is the right choice for WordPress agencies and service businesses with dedicated sales teams that need email tracking within a full CRM context.
8. HubSpot Email Tracking
HubSpot offers free email tracking as part of its HubSpot CRM suite. This makes it accessible to businesses of any size without requiring a paid subscription, though premium features are available through HubSpot’s Sales Hub plans.
The tracking tool integrates with HubSpot’s contact database, automatically logging email opens, clicks, and replies against contact records. This creates a comprehensive activity timeline that shows every interaction between your team and each contact.
Key Features:
- Real-time notifications when tracked emails are opened or links are clicked
- Complete contact activity timeline showing email engagement alongside website visits and form submissions
- Works with Gmail, Outlook, Windows, and Android
- Free tier with up to 200 email notifications per month; paid plans unlock unlimited tracking
HubSpot Email Tracking is ideal for businesses already using or considering HubSpot CRM, as the email tracking data feeds directly into the broader marketing and sales ecosystem. For WordPress sites building email lists, HubSpot’s integration capabilities connect email engagement with website behavior for a unified view of the customer journey.
9. Outreach
Outreach is an enterprise-grade sales engagement platform that includes sophisticated email tracking as one component of its comprehensive outreach automation suite. It is designed for sales organizations that manage high-volume, multi-channel prospecting campaigns.
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Key Features:
- Email and call sequencing with automated multi-touch workflows
- Advanced analytics covering email deliverability, open rates, reply rates, and meeting conversion
- Deep integration with Gmail and Outlook
- AI-powered insights that recommend optimal send times and messaging adjustments
- Enterprise pricing available on request
Outreach is built for sales teams at scale and is typically overkill for individual users or small teams. However, for WordPress agencies with dedicated business development teams managing large prospecting campaigns, its automation and analytics capabilities justify the investment.
Choosing the Right Email Tracking App
Selecting the best email tracking tool depends on your specific needs and budget:
- Simple, free tracking for Gmail: Mailtrack or MailTracker by Hunter
- Email scheduling plus tracking: Boomerang
- Sales workflow automation: Mixmax or Vocus
- Engagement analytics and optimization: MailTag
- Full CRM integration: HubSpot or Salesmate
- Enterprise-scale outreach: Outreach
Most of these tools offer free tiers or trials, so testing two or three options with your actual email workflow before committing to a paid plan is straightforward.
Summary
Email tracking apps transform one of the most important business communication channels from opaque to transparent. By understanding when recipients engage with your emails, how many times they revisit your messages, and which links they click, you gain the intelligence needed to follow up effectively, refine your messaging, and close more deals. For WordPress professionals managing client relationships, sales pipelines, or e-commerce communications, email tracking is no longer optional - it is a fundamental component of effective communication strategy.
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