--- title: "Mailtrack Software Pricing, Alternatives & More 2026 | Capterra" description: "With the help of Capterra, learn about Mailtrack Software - reviews, pricing plans, popular comparisons to other Email Tracking products and more." source_url: "https://www.capterra.com/p/164512/MailTrack/" page_type: "product" language: "en" publication_date: "2026-10-19" --- # Mailtrack Software Review 2026: Features, Integrations, Pros & Cons Last updated on October 19, 2026 Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Description](#description)[Use cases](#use-cases)[Alternatives](#alternatives)[FAQs](#faqs)[Features](#features)[Pricing](#pricing)[Support](#support)[Reviews](#reviews) Mailtrack ## What is Mailtrack? Mailtrack is the original email tracker for Gmail, running since 2013 with more than 3 million users. It adds double check marks to your Sent folder, one for delivered and two for read, so you know whether your message landed without leaving Gmail. WHAT YOU GET - Unlimited read receipts, free, with no send limits - Individual tracking in group emails: see which recipient opened, not just that someone did - Full history of every open and click, with the exact time - Real-time alerts on desktop, mobile and email - Reminders when a message goes unopened or unanswered - Link click tracking - Mail merge campaigns, with every recipient tracked individually Mailtrack filters out your own opens, so re-reading your own email is never counted. Emails go through your own Gmail account, not an external server, so deliverability is unchanged. GDPR compliant, audited annually by Google, ISO certified, AES-256 encryption. Mailtrack never stores your email content. Mailtrack is made by Mailsuite. ## What is Mailtrack used for? [Email Tracking](https://www.capterra.com/email-tracking-software/)[Email Marketing](https://www.capterra.com/email-marketing-software/) Recognitions Shortlist Top alternative Featured Overall rating Based on 226 user reviews Reviews sentiment Positive 93% Neutral 5% Negative 3% Starting price $2.99 Per User, Per Month Free trial not available Includes Free Version Capterra Shortlist charts the highest-rated and most popular products... - Email Tracking / 2025 Our "Best of" badge program showcases products with the highest ratings... Our "Best of" badge program showcases products with the highest ratings... - Email Marketing / 2025 - Email Tracking / 2025 Do you work for Mailtrack?[Manage this product listing](https://www.g2.com/products/mailsuite-mailtrack/claim_requests/new?auto=true) ## Compare with a popular alternative Capterra selects software alternatives based on relevant features, verified user reviews and user interactions. Placement may be influenced by client status. ### Mailtrack 4.5 (227) VS. [4.8 (1,424)](https://www.capterra.com/p/168452/GMass/reviews/) Starting Price $2.99 Per User, Per Month Starting Price $25 Flat Rate, Per Month Free Trial Free Version Pricing Options Free Trial Free Version Ease Of Use 4.6 (227) Ease Of Use 4.7 (1,424) Value For Money 4.4 (167) Value For Money 4.7 (1,317) Customer Service 4.3 (132) Customer Service 4.6 (1,213) ## Mailtrack alternatives [4.2 (755)](https://www.capterra.com/p/204113/SendGrid/reviews/) Starting price $15.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 82% of reviewers rated it above 4 stars [4.7 (837)](https://www.capterra.com/p/153508/Omnisend/reviews/) Starting price $16.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 98% of reviewers rated it above 4 stars [4.2 (457)](https://www.capterra.com/p/130105/Mailjet/reviews/) Starting price $19.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 83% of reviewers rated it above 4 stars [MailerLite](https://www.capterra.com/p/136603/MailerLite/) [4.7 (2,344)](https://www.capterra.com/p/136603/MailerLite/reviews/) Starting price $12.00 Per User, Per Month Pricing Options Free Trial Free Version User Rating 96% of reviewers rated it above 4 stars [Learn More](https://www.capterra.com/p/136603/MailerLite/) [View all alternatives](https://www.capterra.com/p/164512/MailTrack/alternatives/) ## FAQs about Mailtrack Overview ### What problems does Mailtrack solve? Mailtrack solves the uncertainty around whether important Gmail messages reached, were opened, or need follow-up. It provides real-time open notifications, repeat-open activity, link engagement, and email status reports, helping sales representatives, marketers, client-facing teams, educators, and recruiters prioritize calls, reminders, outreach timing, and responses. Answer based on 219 reviews Overview ### Which roles and teams benefit most from Mailtrack? Mailtrack is most used by business owners, CEOs, founders, and directors who monitor client and partner outreach. Sales teams, realtors, and consultants use email tracking to time follow-ups with prospects. Marketing specialists, writers, and freelancers check campaign engagement, while administrative and office staff confirm receipt of operational communications. Answer based on 227 reviews Overview ### What company size and industries is Mailtrack built for? Mailtrack is built for small teams, with 70% of reviewers from small businesses, especially Marketing and Advertising organizations (12%). It also serves sales reps, recruiters, agencies, and consultants in Computer Software (7%) and Human Resources (5%), primarily for Gmail email tracking to guide follow-up timing. Answer based on 227 reviews Features and Usability ### What are the key features of Mailtrack? Mailtrack includes core email tracking for Gmail, showing when messages are opened, the time of each open, and repeat opens. It provides real-time email notifications and unread-email reminders to support follow-up. Additional engagement features include link click tracking, activity dashboards, daily reports, and campaign email management. Answer based on 193 reviews Pricing ### How much does it cost and what fees or limitations are included? Mailtrack offers a free plan and paid options from $2.99 per user/month. The Mailtrack plan provides seven-day history, while Mailsuite costs 9.99 annually or 19.99 monthly for complete history, group tracking, and reports. Reviewers value the free tier but cite its signature, ads, and feature restrictions; some consider paid pricing steep. Answer based on 67 reviews Integrations ### Which third-party tools and platforms does Mailtrack integrate with? Mailtrack integrates with Gmail, its primary supported email platform. Reviewers describe a Gmail browser extension and connector that adds email-open tracking and read-status indicators within the Gmail interface. The available integration data lists Gmail as Mailtrack’s confirmed third-party integration; support for Outlook and other email clients is not indicated. Answer based on 55 reviews Getting Started and Support ### What training and onboarding options does Mailtrack offer? Mailtrack provides live online sessions, webinars, documentation, and videos to help teams get started. Live online sessions and webinars support guided instruction, while documentation and videos offer self-paced reference materials for learning features and reviewing setup steps as needed. Answer based on 1 reviews Getting Started and Support ### What customer support options does Mailtrack offer? Mailtrack provides email/help desk, FAQ/forum, knowledge base, phone support, and 24/7 live rep support. Users mention that support can be responsive for general questions, but some report billing issues and missed requests, suggesting experiences may vary depending on the type of problem and follow-up needed. Answer based on 2 reviews Bugs and issues ### Does Mailtrack have bugs or reliability issues? Mailtrack generally provides dependable email-open tracking, but some users encounter browser, Gmail update, and mobile setup issues. Sales teams value its simple tracking notifications, while some report occasional extension conflicts, repeated access permissions, or inaccurate self-open alerts. Free-plan upgrade pop-ups and branding can also interrupt the Gmail experience. Answer based on 37 reviews ## Features AI summary Based on 1,898 Email Tracking reviews Capterra data shows that buyers of email tracking software rank the following features as their top priorities: - **Engagement Tracking** (**59%** of reviewers rated this feature as critical) - **Email Distribution** (**59%**) - **Contact Management** (**54%**) Mailsuite supports all three of the features reviewers rate most highly: **Engagement Tracking**, **Email Distribution**, and **Contact Management**. Together, these capabilities help businesses monitor recipient activity, send emails at scale, and keep contact records organized, allowing teams to follow up more effectively and manage outreach with better visibility. Contact Management 4.3 (23) 39.13% of 23 reviewers that rated this feature as important or highly important Manage, organize, and store contact information Email Management 4.6 (23) 34.78% of 23 reviewers that rated this feature as important or highly important Manage, store and organize emails within the system or via third-party apps Email Marketing 4.3 (23) 30.43% of 23 reviewers that rated this feature as important or highly important Create and send email blasts/campaigns Reporting/Analytics 4.4 (28) 50.00% of 28 reviewers that rated this feature as important or highly important View and track pertinent metrics to find patterns and gain insights from data Click Tracking 4.6 (29) 55.17% of 29 reviewers that rated this feature as important or highly important Track the amount of clicks on individual products to measure campaign results Real-Time Notifications 4.7 (23) 69.57% of 23 reviewers that rated this feature as important or highly important Notifications that are delivered to users as soon as an event occurs Mailtrack 33 features ### All Features - Activity Dashboard: Dashboard to view the status of ongoing processes, identify current incidents and track past activities - Activity Tracking: Track and document all activities across devices, networks, and other systems - Attachment Activity: Records the rate at which email attachments are opened or downloaded. - Campaign Analytics: Track and interpret campaign performance metrics - Campaign Management: Create a collection of marketing actions to complete specific goals and plan and analyze campaign results - Campaign Scheduling: Set campaign schedules by selecting start, pause, and end dates - Click Tracking: Track the amount of clicks on individual products to measure campaign results - Contact Management: Manage, organize, and store contact information - CRM: Built-in customer relationship management (CRM) capabilities or integration with a third-party CRM system - Email Campaign Management: Plan, execute, and analyze email marketing campaigns - Email Management: Manage, store and organize emails within the system or via third-party apps - Email Marketing: Create and send email blasts/campaigns - Email Reminders: Reminders sent via email - Email Templates: Pre-made examples and templates for emails - Email Tracking: Track delivered, received, and opened emails - Engagement Tracking: Tracks metrics that provide insight into how a user interacts with any interface or product - Event Triggered Actions: Predefined actions automatically performed on the occurance of specific events - GDPR Compliance: Ensure compliance with the General Data Protection Regulation protocols - Link Activity: Records the rate at which links in emails are followed. - List Management: Manage contacts across multiple mailing lists - Manage Email Lists: List management tools include importing and maintaining subscriber data. Manage list segmentation, profile attribute management, and delivery status. Subscribers self-manage preferences. - Mobile Optimization: Optimize content to ensure it is easily accessible for mobile users - Monitoring: Observe and track the demand, usage, progress or quality of a system, product, or user - Open Rates: Records the rate at which emails are opened. - Personalization: Adjust communications based on previous interactions or personal preferences - Real-Time Analytics: Analyze and gain insights into data in real-time - Real-Time Notifications: Notifications that are delivered to users as soon as an event occurs - Reporting/Analytics: View and track pertinent metrics to find patterns and gain insights from data - Scheduling: Plan availability and assign specific time slots for tasks and resources - Subscriber Management: Add or remove subscribers from mailing lists - Team Management: Organizing a group of people to accomplish a task - Template Management: Create, save, and re-purpose templates for emails, forms, etc. - Third-Party Integrations: Set up connections to third-party platforms to improve business processes --- Get Advice We can help you find the software with the features you need. Features 4.4 (227) 4.4 Based on 227 reviews ## Pricing Value for money 4.4 (167) Free Version [View pricing plan details](https://www.capterra.com/p/164512/MailTrack/pricing/) Free $0.00 It includes: - Unlimited Email Tracking - Read Receipts in Gmail (double checks) - Instant Open Alerts - Works Inside Gmail - Desktop & Mobile Notifications - First Open Logged with Time & Date - Daily Activity Report - iOS & Android Apps Mailtrack $2.99 Per User,Per Month It includes: - Everything in Free, plus: - 7-Day Tracking History - No Promotional Signature Mailsuite $9.99 Per User,Per Month It includes: - Everything in Mailtrack, plus: - Complete Tracking History - See Exactly Who Opened Your Group Emails - Schedule Your Tracked Emails - Weekly & Monthly Activity Reports - Unlimited Link Click Tracking - Custom Alerts - Unlimited PDF Tracking & Sharing - Confidential PDF Watermark - eSignature with Audit Trail - Email Campaigns up to 60,000 Recipients/Month - Email Templates, Polls & Video Messages - Certified Emails - CRM Auto-BCC & Zapier Integration - Centralized Team Billing - Priority 24/7 Support Value for money 4.4 (167) 4.4 Based on 167 reviews Connect with a Capterra advisor for a free 15-minute consultation Get a personalized software list aligned to your business needs with guidance from our expert advisors. Our team has helped 1 million+ businesses like yours find options that fit their needs. ## Support, customer service and training options Customer Service 4.3 (132) Support - Email/Help Desk - FAQs/Forum - Knowledge Base - Phone Support - 24/7 (Live rep) - Chat Training - In Person - Live Online - Webinars - Documentation - Videos Deployment - Web - Android - iPhone/iPad Typical users - Freelancers - Small businesses - Mid size businesses - Enterprises Customer Service 4.3 (132) 4.3 Based on 132 reviews ## User reviews Overall rating 4.5 Based on 226 reviews Filter by rating Counts reflect reviews available in this feed. 5(141) 4(68) 3(11) 2(0) 1(6) Mentioned topic Recent reviews first, then most helpful Devis S. freelancer Used the software for: 3-5 years ### "easy and simple tracking of the email opening" 5.0 July 28, 2022 the experience was positive, it is one of those simple "plugins" that you install without thinking so much, the use is immediate, see the icon of green ticks similar to how the read receipt for messages received on whatsapp ( Do you use it in the USA? I have heard conflicting opinions, in Italy we all have it, absolutely everyone!). However, for massive sending of emails from google (max 20-100 per day and then to rise, then it becomes spam for google systems) I recommend yetanothermailmerge YAMM plugin for google docs / gmail. In addition to sending the email and monitoring the opening, see if they trash without opening, if the email does not reach its destination and provides you with a final report. All free, all in google and with a "mail merge" function that you may use with microsoft office Pros it's simple, free and straight to the point, I recommend it. Even if you think not to use it, try it and you will think of uses both if you are commercial like me and administrators who do not sell Cons it works from gmail on a browser but in my case not from external apps such as "easymail for gmail" from windows store ED Executive Director Executive Director Used the software for: 1-3 years ### "Confirmation Message Needed for Accidental Unsubscribes!" 4.0 Overall Rating 4.0 4.0 Ease of Use 4.0 4.0 Features 5.0 5.0 Customer Service 1.0 1.0 Likelihood to Recommend 9/10 July 23, 2025 Normally, I love Mailsuite, but when I could not send admin emails to my nonprofit's Google group after accidentally hitting unsubscribe, I had to remove it. This problem could easily be fixed with a simple confirmation CTA message, just like when you go to delete a computer file. Just ask, "ARE YOU SURE?" That way, we wouldn't accidently be able to unsubscribe. Please, please, please fix this! Pros I really loved Mailsuite, it helps to show how many people are opening our nonprofit org's newsletter. The tracking is very helpful and we appreciate it being free since we are limited on funds. I would have given 5 stars had it not been for one silly issue that could very easily be fixed: A simple confirmation message when someone accidentally hits "unsubscribe", so it can be undone! Cons There was no confirmation CTA message that came up when I accidentally hit the unsubscribe link! That link is far too close to the X to "remove unsubscribe once". Since we already have the unsubscribe feature built into our Google Workspace for Nonprofits, we don't need two unsubscribes, so I have always just clicked the X link for remove once when sending out mass emails to our newsletter group. Well, apparently I clicked too close to the Unsubscribe and it unsubscribed our admin account and I could not even send an email to our group. I had to remove Mailsuite! I didn't even know it had happened until I suddenly got an error message saying our admin account had unsubscribed from its own emails. OW owner owner Used the software for: 1-3 years ### "Do not use" 1.0 Overall Rating 1.0 1.0 Ease of Use 1.0 1.0 Features 1.0 1.0 Customer Service 1.0 1.0 Likelihood to Recommend 0/10 October 10, 2023 Mailtrack cost us thousands of dollars in lost productivity and their response was "Sorry about that". They also lied to us about how long there had been an issue (we had a problem over a week ago but had not been able to trace it to them at the time). Pros It was great while it worked. It was lovely to see who had read emails. Cons Mailtrack had what they called a server issue. Emails sent by my organization all came back to us as unsent, but somehow they were all deleted from our "sent" box and were not in our drafts. So Mailtrack somehow deleted these emails. All had to be done and resent. PA Paralegal Paralegal Used the software for: Less than 1 year ### "Satisfactory but simple product" 5.0 Overall Rating 5.0 5.0 Ease of Use 4.0 4.0 Features 3.0 3.0 Customer Service 4.0 4.0 Likelihood to Recommend 8/10 July 15, 2022 My overall experience has been pleasant and satisfactory. Mailtrack is a great (but simple) tool for email tracking. It has helped with our email communication and it has been a reliable product. It has a free version and affordable paid version. As a law firm, sometimes we just need to know if a person has opened any of our emails at all and Mailtrack has served that purpose quite well. We don't necessarily need the extras but they're still nice to have. Pros Price is always high on my list, mailtrack has a free version and the paid version is reasonable! I love that Mailtrack is easy to use even for beginner or intermediate experience levels. I like the notifications and reporting, it helps us understand how recieptients engage with our email marketing, newsletter, events, or even just typical emails. Mailtrack has been rather dependable and I have not experienced any technical issues or malfunctions which is great! Mailtrack has been helpful with our email communication all around and especially anything marketing related. Cons I do not like the limited amount of templates and customization. I do not like the lack of available features. Mailtrack does not notify you when an email has been forwarded and it does not include extra data like how many times an email was opened. Another issue is that it only works with Gmail and it isn't necessarily mobile friendly. AD Associate Director of Foundation Relations Associate Director of Foundation Relations Used the software for: Less than 1 year ### "MailTrack is a Low-Overhead, Complete Mail-tracking Solution" 5.0 Overall Rating 5.0 5.0 Ease of Use 5.0 5.0 Features 4.0 4.0 Customer Service 4.0 4.0 Likelihood to Recommend 8/10 August 9, 2021 My overall experience with MailTrack has been quite positive. It has allowed me to reach a greater level of engagement with my targeted emails than I ever have before. Pros I have run numerous email promotional campaigns for product launches (music, books) over the years and MailTrack is by far the simplest mail tracker I've used. It used to be that I'd send out emails wondering if they were ever getting opened, but MailTrack alleviates that concern. I now know when my emails are opened and links are clicked. This allows me to follow up accordingly to achieve even greater response to my campaigns. Moreover, MailTrack features an easy Gmail integration plugin that enables easy monitoring from within my mail client of choice. I did pay to upgrade to the premium version in order to remove the "sent by MailTrack" branding that would otherwise appear. Cons The only issue I've encountered with MailTrack (aside from the easily resolved need to turn off the "sent by MailTrack" branding) comes when I send email to certain domains. I've found that institutional/organizational email addresses are much more likely to alert users to the fact that their emails are being tracked, but I imagine this is the case with all image-based mail trackers. Further, some of those mail servers forward and display emails to end users in a way that makes it appear as if an email has been opened far more times than it ever actually is (one particular email registered over 100 opens without a response). These complaints are fairly minor though--MailTrack largely functions as advertised. Maddie T. Graphic Designer Used the software for: 3-5 years ### "Free tier offers a lot" 5.0 Overall Rating 5.0 5.0 Ease of Use 5.0 5.0 Features 5.0 5.0 Customer Service 5.0 5.0 Likelihood to Recommend 10/10 March 4, 2025 Overall, very good! I use it everyday, i love the auto-tracking feature and that the free tier actually offers a lot. Pros The ability to track emails even on gmail without having the mailtrack signature or the other person knowing! Cons The constant popups to upgrade. I think they may have fixed this now, but it could be my adblocker that blocks it now. CE CEO CEO Used the software for: 3-5 years ### "MailTrack FTW!" 5.0 Overall Rating 5.0 5.0 Ease of Use 5.0 5.0 Features 5.0 5.0 Customer Service 5.0 5.0 Likelihood to Recommend 10/10 November 16, 2023 Overall experience has been wonderful and it's easily my go-to email tracking application. I've tried others but this one is the smoothest & easiest to use. Pros Best thing about MailTrack is that not only does it automatically let you know once someone opens an email you've sent to them, it gives you a daily update on how many emails you sent, how many have been opened, who hasn't open an email yet, etc. It's done wonders for my business knowing if someone received my message. Cons The only thing I don't like about MailTrack is that it includes itself in your signature when you send emails. However, you can get rid of that by using the paid version. I guess it's not a bad trade off considering all of the benefits I'm receiving for free! HR Human Resources Assistant Human Resources Assistant Used the software for: 3-5 years ### "Track email and comprehensive report" 5.0 Overall Rating 5.0 5.0 Ease of Use 4.0 4.0 Features 4.0 4.0 Customer Service 5.0 5.0 Likelihood to Recommend 9/10 August 25, 2021 Pros MailTrack is perhaps the most user-friendly mail tracker I've noticed. I used to worry about whether or not my emails were being opened when I sent them out, but MailTrack takes care of that. Whenever my emails are viewed, and links are clicked, I now have a record of it. This enables me to followup up as needed to increase the response to my efforts. Furthermore, MailTrack has a simple Gmail connection plugin to monitor my emails from within my preferred email client. Cons The restrictions of the free version are what I dislike the most. For example, letter size limitation, a watermark that I have to erase every time, and it does not turn up when several receivers open the mail. The premium plan i quite expensive for a simple software like this one. PB Personal Banker Personal Banker Used the software for: 3-5 years ### "MailTrack all my email status" 4.0 November 10, 2021 Pros I like all of the reports provided by this program once my emails have been sent. It assists me in keeping track of the status of emails, such as whether or not the receiver has opened them and how long they have been open. All of these cues will help us craft an effective follow-up email. To keep an eye on my email within my favorite email client, MailTrack provides an easy Gmail connector plugin. Cons One of the things I detest about this program is that it does not provide complete anonymity while sending the email. It will be visible in the email footnote that the email was sent using MailTracker. It would leave a negative impression on the receiver, and I would delete it totally if I were able to. For a basic program like this, the premium package is rather pricey. AA Administrative Assistant Administrative Assistant Used the software for: 3-5 years ### "Solution for email tracking" 5.0 Overall Rating 5.0 5.0 Ease of Use 4.0 4.0 Features 4.0 4.0 Customer Service 4.0 4.0 Likelihood to Recommend 9/10 August 24, 2021 I use it firstly as an additional for the email marketing tracker, but now it has been so critical to analyzed our email marketing planning. Pros MailTrack is really essential for me to track and monitor the email that are sent out. The report is quite extensive, as it will show how many of the email are opened by the recipient, how long the email are opened and if the email are opened more than one time. We can use this data to altering our marketing campaign effectively. Cons MailTrack is quite expensive, but all the feature and the tools is very helpful and perform better than the competitors. I would like to see more price scheme that can cater all the user need, especially for the monthly emails that will be monitored and price decrease for some of the plan. [View all Reviews](https://www.capterra.com/p/164512/MailTrack/reviews/) ## Top-rated software of 2026 ### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox. Popular comparisons [GMass vs Mailtrack](https://www.capterra.com/compare/164512-168452/MailTrack-vs-GMass)[MailerLite vs Mailtrack](https://www.capterra.com/compare/136603-164512/MailerLite-vs-MailTrack)[Constant Contact vs Mailtrack](https://www.capterra.com/compare/31898-164512/Constant-Contact-vs-MailTrack)[iContact vs Mailtrack](https://www.capterra.com/compare/164512-221118/MailTrack-vs-iContact)[Zoho Campaigns vs Mailtrack](https://www.capterra.com/compare/164512-253223/MailTrack-vs-Zoho-Campaigns)[SendGrid vs Mailtrack](https://www.capterra.com/compare/164512-204113/MailTrack-vs-SendGrid)[GetResponse vs Mailtrack](https://www.capterra.com/compare/153948-164512/GetResponse-vs-MailTrack)[Mailshake vs Mailtrack](https://www.capterra.com/compare/164512-164705/MailTrack-vs-Mailshake) [Emma by Marigold vs Mailtrack](https://www.capterra.com/compare/75428-164512/Emma-vs-MailTrack)[Omnisend vs Mailtrack](https://www.capterra.com/compare/153508-164512/Omnisend-vs-MailTrack)[Freshsales vs Mailtrack](https://www.capterra.com/compare/155563-164512/Freshsales-vs-MailTrack)[Mailjet vs Mailtrack](https://www.capterra.com/compare/130105-164512/Mailjet-vs-MailTrack)[EngageBay CRM vs Mailtrack](https://www.capterra.com/compare/164512-178819/MailTrack-vs-EngageBay-Marketing)[Campaign Monitor by Marigold vs Mailtrack](https://www.capterra.com/compare/76928-164512/Campaign-Monitor-vs-MailTrack)[Mixmax vs Mailtrack](https://www.capterra.com/compare/159470-164512/Mixmax-vs-MailTrack)