All Comparisons
Ranked List5 tools comparedUpdated June 12, 2026

Best Email Tracker for Marketing Agencies in 2026

Agencies send a lot of email on behalf of clients (proposals, project updates, billing, performance reports) and on behalf of themselves (BD outreach, recruiting, vendor management). Tracking needs to support per-client visibility without polluting client-facing sends with branded footers.

The right tracker for agency work is silent (no footer), per-thread filterable, supports both Outlook (enterprise client communication) and Gmail (independent agency staff), and offers AI-written follow-ups for high-value pitches.

TL;DR

Outsolvi is the right pick for most agencies: silent tracking (no footer), graded opens, native Outlook + Gmail at $7. Mixmax fits Gmail-only agencies needing scheduling polish. HubSpot Sales fits agencies running client lifecycle through HubSpot CRM.

How we ranked these tools

Each tracker scored on no-branded-footer (25%), per-client / per-thread filtering (20%), confidence-scored opens (20%), Outlook and Gmail support (20%), and team workspace features (15%).

We make Outsolvi, and it's on this list. Every tool here, ours included, was scored on the criteria above, so weigh the ranking knowing who wrote it.

At a glance

RankToolStarting priceBest for
#1Outsolvi$7/user/mo yearly, $12 monthlyMarketing and creative agencies running daily client communication.
#2MixmaxInbox Copilot $29/user/mo yearly.Gmail-only agencies running calendar-heavy client work.
#3HubSpot Sales HubSales Hub Starter $20/user/moAgencies running client pipeline in HubSpot.
#4YeswareFree planLarger agencies with Salesforce CRM.
#5MailtrackFree with brandingPre-revenue solo agencies on Gmail.

Click any tool to jump to the full breakdown below.

1

Outsolvi

Silent, graded tracking with AI-written follow-ups at $7/user/mo, native Outlook + Gmail.

Best for

Marketing and creative agencies running daily client communication.

Pros
  • No branded footer on client-facing sends
  • Every open graded as a person or a machine, with the reason
  • Search by recipient name, email address or client domain to see one client's emails
  • Native Outlook and Gmail support
Cons
  • •No agency-specific reporting templates
  • •No client-portal feature
Pricing

$7/user/mo yearly, $12 monthly. Free trial of 14 days or 250 tracked emails.

Verdict

The right pick for agencies whose load-bearing need is silent, accurate tracking on client outreach.

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2

Mixmax

Gmail productivity + calendar polish.

Full comparison
Best for

Gmail-only agencies running calendar-heavy client work.

Pros
  • Best Gmail calendar UX
  • Templates + sequences
  • Reasonable team features
Cons
  • •No classic Outlook desktop
  • •$29 + per seat
  • •No confidence scoring
Pricing

Inbox Copilot $29/user/mo yearly.

Verdict

Right for Gmail-only agencies with heavy scheduling needs.

3

HubSpot Sales Hub

Sales-focused product inside HubSpot CRM.

Full comparison
Best for

Agencies running client pipeline in HubSpot.

Pros
  • HubSpot CRM context
  • Document tracking on pitches
  • Scalable platform
Cons
  • •AI gated to Pro
  • •Per-seat math expensive at scale
Pricing

Sales Hub Starter $20/user/mo. Professional $90/mo yearly ($100 monthly).

Verdict

Right for HubSpot-committed agencies.

4

Yesware

Cross-platform tracker with Salesforce sync.

Full comparison
Best for

Larger agencies with Salesforce CRM.

Pros
  • Salesforce sync from Premium
  • Works in Outlook and Gmail
  • Shared templates on Premium
Cons
  • •Premium, where Salesforce sync starts, is $35 a user a month billed yearly
  • •New Outlook isn't in Yesware's list of supported clients, and on a Mac only legacy Outlook works
Pricing

Free plan. Pro $15/user/mo yearly or $19 monthly. Premium $35 or $45. Enterprise $65 or $85.

Verdict

Right for Salesforce-tied agencies.

5

Mailtrack

Minimal Gmail tracker.

Full comparison
Best for

Pre-revenue solo agencies on Gmail.

Pros
  • Free tier
  • Lightweight
Cons
  • •Opens only in Outlook
  • •Branded footer on free tier
  • •No team features
Pricing

Free with branding. Pro $4.99/user/mo yearly.

Verdict

Right only for solo Gmail agencies with light tracking needs.

Frequently asked questions

Will the recipient see I'm tracking client proposals?+

Outsolvi adds no branded footer to the emails you send yourself, or to anything sent from a paid plan; tracking is invisible. Mailtrack appends 'Sent with Mailtrack' on free tier. Most other tools are silent at paid tiers.

Can I see per-client engagement in one dashboard?+

Yes, by search rather than tags. Outsolvi's tracked-emails list can be searched by recipient name or email address, so searching a client's domain pulls up every tracked email to that client, with opens and clicks, in one dashboard.

Ready to try the #1 pick?

Outsolvi gives marketing agencies silent, accurate tracking on client outreach for $7/user/mo yearly. Free trial of 14 days or 250 tracked emails.

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Skip the shortlist and test the top pick.

14 days free, no credit card, and it works in Outlook and Gmail from the first send.

2-minute setupNo credit cardFrom $7/mo yearly · $12/mo monthly
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Nate SummersCo-Founder, Outsolvi

Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi grades every open as a person or a machine, in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.

Last reviewed June 12, 2026Editorially independent

We update these pages when the underlying mechanics change. new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.

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