Best Sales Email Tracking Software in 2026
Updated
In short: Mixmax is ranked #1 of 26 as of 2 October 2026, ahead of Mailsuite and Boomerang. The best-ranked option with a free plan is Boomerang. The lowest first paid tier on this page is Outsolvi at $0.58/mo.
When you need to know what happens after a sales email is sent, compare the signals each tool tracks and how those signals fit your follow-up process. The ranking compares open, click, reply and attachment tracking alongside real-time alerts and CRM synchronization. Email client support, free plans and paid-from pricing add practical fit and cost considerations. Mixmax, Mailsuite and Boomerang lead the entries, with Right Inbox and Mailbutler Smart Assistant also among the first options. Consider which engagement signals help your team decide when to follow up, whether alerts need to arrive in real time, and which CRM or email client the tool should work with.
26 sales email tracking software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Email client support | |
|---|---|---|---|---|---|---|---|---|
| 1 |  Mixmax | 8.5 | RecognisedAPIDocumented | $29/mo | Yes | 29 /user/mo | — | View |
| 2 | Mailsuite | 7.5 | RecognisedAPIDocumented | $6.99/mo | Yes | — | gmail_and_outlook | View |
| 3 |  Boomerang | 7.4 | RecognisedAPIDocumented | $4.98/mo | Yes | 4.98 /user/mo | gmail_and_outlook | View |
| 4 | Right Inbox | 7.1 | RecognisedAPIDocumented | $0.66/mo | Yes | 7.95 /user/mo | gmail | View |
| 5 | Mailbutler Smart Assistant | 7.1 | RecognisedAPIDocumented | $7/mo | Yes | 4 /user/mo | — | View |
| 6 | Yesware | 6.8 | RecognisedAPIDocumented | — | Yes | 15 /user/mo | — | View |
| 7 | Outsolvi | 6.5 | RecognisedAPIDocumented | $0.58/mo | No | 7 /user/mo | gmail_and_outlook | View |
| 8 | Vocus.io | 6.3 | RecognisedAPIDocumented | — | No | 5 /user/mo | gmail | View |
| 9 | FollowUp.cc | 6.3 | RecognisedAPIDocumented | $18/mo | No | 18 /user/mo | gmail | View |
| 10 |  WhoReadMe | 6.3 | RecognisedAPIDocumented | — | Yes | — | gmail_and_outlook | View |
| 11 | EmailCaddie | 6.0 | RecognisedAPIDocumented | — | No | — | outlook | View |
| 12 | Mailcastr | 5.9 | RecognisedAPIDocumented | — | Yes | — | gmail | View |
| 13 | TrackMailBox | 5.9 | RecognisedAPIDocumented | — | Yes | — | gmail | View |
| 14 |  Pointofmail | 5.8 | RecognisedAPIDocumented | — | No | — | gmail_and_outlook | View |
| 15 | MailTracker | 5.8 | RecognisedAPIDocumented | — | Yes | — | gmail | View |
| 16 |  Email Tracker | 5.7 | RecognisedAPIDocumented | — | — | 6.9 /user/mo | gmail | View |
| 17 | ReadNotify | 5.6 | RecognisedAPIDocumented | — | No | — | gmail_and_outlook | View |
| 18 | Mail Track for Gmail | 5.6 | RecognisedAPIDocumented | — | Yes | — | gmail | View |
| 19 |  DidTheyReadIt | 5.5 | RecognisedAPIDocumented | — | No | — | gmail_and_outlook | View |
| 20 | Streak | 5.5 | RecognisedAPIDocumented | $59/mo | Yes | 49 /user/mo | — | View |
| 21 |  Trustifi Email Tracking | 5.4 | RecognisedAPIDocumented | — | Yes | — | gmail_and_outlook | View |
| 22 | LeadBoxer | 5.4 | RecognisedAPIDocumented | — | Yes | — | gmail_and_outlook | View |
| 23 | RevenueGrid | 5.3 | RecognisedAPIDocumented | $30/mo | No | 30 /user/mo | gmail_and_outlook | View |
| 24 | MailTag | 5.2 | RecognisedAPIDocumented | — | — | — | gmail | View |
| 25 | Outreach | 4.8 | RecognisedAPIDocumented | — | No | — | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which sales email tracking software is ranked first on Inferse?
Mixmax is ranked #1 of 26 with a score of 8.5. Mailsuite is second and Boomerang third.
How many of these have a free plan?
5 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Outsolvi has the lowest first paid tier we found: $0.58/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.