Straight answers on pricing, credits, deliverability and fit — with no invented numbers.
There is no single best tool — the four most commonly shortlisted are Amplemarket (all-in-one AI SDR platform), Instantly (cold email and deliverability), Reply.io (multichannel sales engagement) and Apollo.io (data plus engagement). Pick by which job is your bottleneck: data accuracy, inbox placement, process across channels, or research time.
A sales engagement platform orchestrates touches you design — sequences, tasks, channels. An AI SDR platform additionally supplies the inputs: contact data, buying signals, and AI-drafted personalization based on research it did. Amplemarket sits in the second group; Reply.io is closer to the first.
Amplemarket publishes a Startup tier from roughly $600/month for 2 seats on annual billing, with Growth and Elite quoted individually. Instantly, Reply.io and Apollo.io all publish self-serve tiers on their own sites, with Apollo.io offering a free plan. Pricing changes often, so check each vendor's pricing page before budgeting. We do not publish figures a vendor has not.
Most platforms bundle seats with a credit allowance that usage draws from — revealing contacts, enrichment and certain AI actions typically consume credits. Your real cost depends on data volume as much as headcount, so ask what consumes a credit, whether credits roll over, and what happens when they run out mid-cycle.
At a high level, Duo handles the research-and-draft step: it gathers context on a prospect and account, then drafts personalized sequence copy reflecting that context and any relevant signals. Reps review and edit before sending, so it removes blank-page time rather than replacing rep judgment.
Mostly yes. A separate sending domain, correct SPF/DKIM/DMARC, proper warmup, conservative per-mailbox volume, send-time verification and periodic spam-placement tests cover the majority of the risk. Instantly is the specialist for this; Amplemarket bundles the same jobs into its platform. See our deliverability guide for the full checklist.
If you are otherwise buying a data provider, a sequencer and a deliverability service this quarter, consolidation usually wins on cost of attention. If you already have a data contract your team trusts and a working setup, migration cost often outweighs the benefit. Start with the tool that fixes your current bottleneck, not the one with the most features.
Annual terms buy a lower rate and cost you flexibility. On a small team where headcount can change in a quarter, ask what happens to seats and credits mid-term before committing, and price the monthly option even if you do not take it.
No. We do not publish numeric scores, star ratings or testimonials, because they imply a precision that a feature comparison cannot support. Each tool gets a plain description of who it suits, who should skip it, and what the tradeoffs are.
Every tool here looks similar in a feature grid. Run two of them against the same 50 target accounts for a week — data accuracy and reply quality separate them fast.