MailTag vs SalesIntel: Different Tools, Different Jobs
Comparing MailTag to SalesIntel is like comparing a speedometer to a car dealership. If you landed here expecting a head-to-head shootout, the honest answer is simpler than that: these tools don't compete. They don't even share a category.
30-Second Verdict
MailTag is a Gmail extension that tracks email opens, priced at $9.99/month billed annually (or $12.99 billed monthly). SalesIntel is a $17k+/year B2B data intelligence platform that finds contacts and tracks buying signals. Completely different problems.
Why This Comparison Doesn't Work
Here's how disconnected these two products are: G2's alternatives page for MailTag suggests Brevo and Mailchimp as competitors. That's not even the right neighborhood for a sales comparison.
Both tools show up when you're researching sales stacks - MailTag in email tracking roundups, SalesIntel in B2B data platform lists. They overlap in your browser tabs, not in functionality.
What Is MailTag?
MailTag is a Chrome extension that adds open tracking, click tracking, email scheduling, and automated follow-ups to Gmail. That's it.
Who it's for: Solo Gmail users who want basic open/click tracking and don't use an outreach platform. At $9.99/month billed annually with a 14-day trial, it's low-commitment.
Who should pass: Anyone already using a modern outreach tool. Most outreach platforms include email tracking natively, so you'd be paying for something you already have. We've also found that Apple Mail Privacy Protection has made open tracking increasingly unreliable by pre-loading tracking pixels, which inflates your numbers and makes the data borderline useless. MailTag's G2 rating sits at 3.9/5, with recurring complaints about no cancel button and slow support.
MailTag gives you open tracking your outreach tool already includes. SalesIntel charges $17k+/yr for data refreshed every 90 days. Prospeo delivers 300M+ profiles with 98% email accuracy on a 7-day refresh cycle - starting at $0/month with 75 free emails.
Get enterprise-grade contact data without the enterprise contract.
What Is SalesIntel?
SalesIntel is a signal-first pipeline generation platform built for mid-market and enterprise sales teams. Completely different animal.
The database covers 200M+ contacts across 40M+ companies, with 54M+ verified mobile numbers. SalesIntel runs 250 full-time researchers who verify 1.75M contacts every week, targeting 95% accuracy on a 90-day refresh cycle. The platform processes 3B data points daily, offers intent data powered by 60K+ signals, a no-code workflow builder called GTMCanvas, unlimited export and enrichment credits per user per month, and integrations with Salesforce, HubSpot, Outreach, and Salesloft. SOC 2 certified, GDPR and CCPA compliant.
G2 gives it a 4.3/5 across 538 reviews, with strongest adoption in mid-market orgs. Reviewers consistently praise CRM integrations but flag data freshness and pricing transparency as recurring frustrations - a pattern we've seen echoed in r/sales threads where reps complain about stale numbers on intent-data platforms.
Skip this if you're a small team or solo founder. The median contract runs around $17,599/year, and that's before add-ons.
Side-by-Side Comparison
| MailTag | SalesIntel | Prospeo | |
|---|---|---|---|
| Category | Email tracker | B2B data platform | B2B data platform |
| What It Does | Tracks opens/clicks | Finds contacts + intent | Finds contacts + intent |
| Database | None | 200M+ contacts | 300M+ profiles |
| Email Tracking | Yes | No | No (pair w/ outreach tool) |
| Contact Data | No | Yes | Yes |
| Intent Data | No | Yes | Yes (15K topics via Bombora) |
| Data Refresh | N/A | 90-day cycle | 7-day cycle |
| Email Accuracy | N/A | 95% target | 98% verified |
| Pricing | $9.99/mo (annual) | ~$17.6k/yr median | From $0 (free tier) |
| G2 Rating | 3.9/5 | 4.3/5 | - |
| Best For | Solo Gmail users | Mid-market+ teams | Teams wanting data, no lock-in |
The Real Cost Breakdown
MailTag costs $119.88/year on annual billing. SalesIntel's median contract is $17,599/year based on Vendr benchmarks across 20 contracts, with a range of $8,670 to $41,380. Add intent data and VisitorIntel, and a 5-user team should budget $23k-$31k/year. SalesIntel does offer a free trial, but the annual commitment is substantial.
That's roughly a 147x price difference. It reinforces the point: these aren't competitors.
Let's be honest - if your average deal size is under $15k, you almost certainly don't need SalesIntel-level infrastructure. We've seen teams sign $20k data contracts when they only need 500 contacts a month. That's paying for a firehose when a garden hose will do.
What If You Need Both?
The person searching "MailTag vs SalesIntel" probably needs verified contact data and a way to track outreach. Neither tool does both.
The smarter play is to split the stack. Use a dedicated data platform like Prospeo for the contact layer - 98% email accuracy on a 7-day refresh cycle versus SalesIntel's 90-day cycle, with 125M+ verified mobile numbers pulling a 30% pickup rate. Then send through an outreach platform that includes built-in email tracking (Instantly, Smartlead, Lemlist - take your pick). MailTag becomes redundant because your outreach tool already tracks opens and clicks.
No sales call. No annual contract. No paying $17k for a database when you need 500 contacts a month.
You don't need a $17k data platform to find 500 contacts a month. Prospeo gives you 98% verified emails at ~$0.01 each, 125M+ mobile numbers with a 30% pickup rate, and intent data across 15,000 topics. No sales call. No annual lock-in.
Stop overpaying for stale data on a 90-day refresh cycle.
FAQ
Is this a fair comparison?
Not really. MailTag tracks email opens for $9.99/month billed annually. SalesIntel finds B2B contacts for $17k+/year. They don't share a category - choosing between them is like choosing between a calculator and an accounting firm. Most teams need a data platform, not a standalone tracker.
Is MailTag free?
No. It costs $9.99/month billed annually (or $12.99 monthly) with a 14-day free trial. Most outreach platforms include email tracking at no extra cost, which makes a standalone tracker hard to justify. If you only need tracking, check whether your sending tool already has it built in.
Does SalesIntel include email tracking?
No. SalesIntel finds contacts - it doesn't track whether they opened your emails. You'd pair it with a separate outreach tool like Outreach or Salesloft for sending and tracking.