All Comparisons
Ranked List5 tools comparedUpdated June 12, 2026

Best Email Tracker for SDRs and BDRs in 2026

SDRs and BDRs work cold outbound at volume: 100-300 cold emails per day per rep. Tracking needs to cover both the cadence engine's sends and the one-to-one follow-ups reps write themselves, support warmup + sender rotation, and surface real engagement signals (opens graded as a person, replies, hot-lead flags) for the rep's morning triage.

The right setup for SDR/BDR work runs a cadence engine (Saleshandy, Outreach.io, Salesloft) for volume and a separate tracker for the one-to-one emails reps send from their own inbox, with opens graded so machine fetches don't count.

TL;DR

Outsolvi runs next to Saleshandy or Outreach.io and tracks the one-to-one emails reps send from their own Outlook or Gmail, with every open graded. It doesn't connect to the cadence engine or track the emails the engine sends. Saleshandy alone fits sub-5-rep SDR teams. Outreach.io fits 15+ SDR teams with enterprise budgets.

How we ranked these tools

Each tracker scored on confidence-scored opens (25%), fit alongside a cadence engine (20%), warmup + deliverability features (20%), per-seat price at SDR-team scale (20%), and AI 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 (paired with cadence engine)$7/user/mo yearlySDR teams running on Saleshandy, Outreach.io, Salesloft, or Apollo who also send one-to-one follow-ups from Outlook or Gmail and need accurate engagement signal on them.
#2SaleshandyPer accountSDR teams of 1-15 reps needing the full cold-outbound stack in one tool.
#3Outreach.ioCustom enterprise pricing ($100+/user/mo typical).Enterprise SDR teams of 15+ reps with Salesforce.
#4Apollo.ioBasic $59/user/moSDR teams needing prospect data + cadence in one tool.
#5GMassStandard $20.75/user/mo yearlyGmail-only SDR teams running cold outbound at high volume.

Click any tool to jump to the full breakdown below.

1

Outsolvi (paired with cadence engine)

Graded open tracking for the emails reps send from their own inbox, next to a cadence engine, at $7/user/mo.

Best for

SDR teams running on Saleshandy, Outreach.io, Salesloft, or Apollo who also send one-to-one follow-ups from Outlook or Gmail and need accurate engagement signal on them.

Pros
  • Runs next to any cadence engine
  • Graded opens keep machine opens out of the count
  • Hot-lead pop-ups from the Gmail extension and classic Outlook add-in
  • Reply labels on inbound
Cons
  • •Doesn't connect to the cadence engine or track the emails it sends
  • •Its own sequences are built for AE cadences, with no A/B testing or warmup, so cold volume stays on Saleshandy or similar
  • •No Salesforce integration today
Pricing

$7/user/mo yearly. Pro $20/user/mo.

Verdict

The right pick for SDR teams running a cadence engine who want graded opens on the emails reps send themselves.

2

Saleshandy

Cold-outbound platform with sending + warmup + tracking.

Full comparison
Best for

SDR teams of 1-15 reps needing the full cold-outbound stack in one tool.

Pros
  • Mature warmup
  • Sender rotation
  • Sequence engine + unified inbox
Cons
  • •Tracking depth secondary to sequencing
  • •No confidence scoring exposed
  • •Pro $76/mo yearly covers 10 seats; Scale $149 beyond that
Pricing

Per account. Starter $34/mo yearly. Pro $76/mo yearly.

Verdict

Right for sub-15-rep SDR teams without an existing cadence engine.

3

Outreach.io

Enterprise SDR cadence engine with deep Salesforce sync.

Best for

Enterprise SDR teams of 15+ reps with Salesforce.

Pros
  • Deep Salesforce integration
  • Mature cadence engine
  • Enterprise-grade reporting
Cons
  • •Tracking depth secondary; no confidence scoring
  • •Custom enterprise pricing
  • •Implementation takes months
Pricing

Custom enterprise pricing ($100+/user/mo typical).

Verdict

Right for enterprise SDR ops at 15+ reps with budget.

4

Apollo.io

Prospecting + cadence engine combined.

Best for

SDR teams needing prospect data + cadence in one tool.

Pros
  • Lead database + cadence + tracking
  • Generous free tier with limited credits
  • Reasonable pricing at growth tiers
Cons
  • •Tracking depth secondary to prospecting
  • •No confidence scoring
  • •Per-seat math at scale similar to Outreach.io
Pricing

Basic $59/user/mo. Professional $99/user/mo yearly.

Verdict

Right for SDR teams that need prospect data + cadence bundled.

5

GMass

Gmail mail-merge engine for cold outbound.

Full comparison
Best for

Gmail-only SDR teams running cold outbound at high volume.

Pros
  • Purpose-built for bulk Gmail sends
  • Mail-merge + tracking + sender warmup
  • Reasonable price
Cons
  • •Gmail-only
  • •No confidence scoring
  • •No team-level reporting at scale
Pricing

Standard $20.75/user/mo yearly. Premium $29.08/user/mo yearly.

Verdict

Right for Gmail-only SDR teams with mail-merge as the core motion.

Frequently asked questions

Should SDRs use a tracker if they already have a cadence engine?+

Yes, for the emails reps send outside it. Cadence engines count raw pixel loads as opens, which pads reported open rates with machine opens. Outsolvi grades the opens on the emails reps send from their own Outlook or Gmail; it doesn't connect to the cadence engine or re-grade the engine's own sends.

Can Outsolvi replace Outreach.io?+

No. Outreach.io is a cadence engine; Outsolvi is a tracking-intelligence layer. They complement, not replace.

Ready to try the #1 pick?

Outsolvi gives SDRs graded open tracking and AI-written follow-ups on the emails they send from their own inbox, next to the cadence engine, for $7/user/mo yearly. Free trial of 14 days or 250 tracked emails.

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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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