COMPARE:
Instantly or Apollo when you need the data as well
A straight comparison of Instantly and Apollo for sending cold email when the list is not built yet, answered on the same seven dimensions as every other compare page here. Mamba Labs builds Apify actors. Prospect Engine is ours, it is the third column, and it does not win most of these rows.
The verdict
Apollo sells you the list and the sender in one seat. Instantly sells you the sender and expects the list to arrive from somewhere else. The all in one is faster to start and the separate stack sends better.
The same questions, both tools
| Instantly | Apollo | Prospect Engine | |
|---|---|---|---|
| What it actually does | Sends cold email sequences from a pool of mailboxes and keeps those mailboxes warm. | Finds contacts in its own database, then emails them from the same account. | Takes a market definition or a domain list and returns enriched company and contact rows. |
| Coverage and hit rate | Mailbox pool, warmup network, inbox placement testing and a shared blocklist, in one account. | A very large contact database, and a sequencer good enough that most users never add a second one. | Public sources, read directly, with the field's origin on the row. |
| What it costs | Per plan, with mailbox counts and monthly send volume as the two things that move the price. | Per seat per month, with export credits as the real ceiling on how much data you get out. | Cents per row, charged on a returned row rather than on an attempt. |
| How it fits a workflow | Campaigns take a CSV or an API push. Replies land in a unified inbox that a human can work. | Search, save a list, sequence it, all in one interface. Its API and CRM syncs are the weaker half. | One API call, or an HTTP column in Clay, and finished rows come back. |
| Where the data comes from | It sends. The lead data is yours, and its own lead marketplace is a separate paid product. | A contributed database, refreshed from user activity, so accuracy varies sharply by market and seniority. | The public web and public registers, named per field. |
| What it takes to set up | Connecting and warming domains is the real work, and it takes two to three weeks before you send. | An hour to a first sequence. It is the fastest of these to something running. | Point it at a market or a list of domains and run it. |
| Where it stops | It is a sender. Deciding who deserves the email is a job you do somewhere else. | Coverage outside the United States thins out, and its data is the same data your competitors bought. | It is not a table. Reviewing and editing rows is something you do elsewhere. |
The same seven questions are asked on every compare page here, in this order, so two of these pages can be read against each other.
What each is actually better at
- Instantly wins on coverage and hit rate, how it fits a workflow, what it takes to set up. A cold email sender with warmup and deliverability tooling in the same product.
- Apollo wins on where the data comes from. A contact database with a sequencer bolted on, sold as one seat.
- Prospect Engine wins on what it costs. One call that finds the companies, enriches them and returns finished rows.
- Nobody wins on what it actually does, where it stops. Instantly and Apollo give the same answer on those, and we are not going to invent a difference.
Both products
What we would actually do
Apollo is the right first move for one rep with no list and no budget for a data layer. It gets you from nothing to a sequence in an afternoon. It stops being right at about the point where you notice everyone in your market is emailing the same contacts, because they bought them from the same place. Once that happens the answer is a list you built yourself and a sender chosen for deliverability, which is Instantly plus something that finds the people. That split costs more and it is the one that keeps working.
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