Mamba Labs builds GTM signal enrichment tools published as Apify actors and MCP servers. Every tool returns flat, Clay-ready JSON per company, priced per result with no subscriptions.

What is the GTM Suite?

The GTM Suite is an all-in-one MCP server that bundles fifteen Mamba Labs tools into a single install. It covers identity resolution, signal detection, ICP scoring, and sequencer push from one endpoint.

USE CASE:

HR tech companies and the deliverability problem

Here is how deliverability for HR tech companies actually gets done, what it costs each way, and where each way stops working. Mamba Labs writes Apify actors for work like this, and Domain Deliverability Checker is the one that reads HR tech companies.

What is actually going wrong

Deliverability for HR tech companies turns into a judgment call nobody wanted. HR tech companies sell to a function that buys rarely and renews forever, and deliverability has to work around it. One thing deliverability on HR tech companies rarely accounts for: the buyer title moves between HR and People with company size, so a title filter cuts the wrong half. If you would rather try it than read about it, Domain Deliverability Checker does deliverability for HR tech companies today.

Why anyone bothers

The mailbox provider will never tell you why HR tech companies stopped opening, which is what makes this worth instrumenting rather than debugging.

The method

Start with one of HR tech companies you already know, so a wrong deliverability answer is obvious rather than plausible.
Run Domain Deliverability Checker across your list of HR tech companies, which carries 1 ready made setup for deliverability.
Read ten rows of deliverability on HR tech companies by hand before you trust the rest of the list.

Traditional Search Tools

An ATS job board, for HR tech companies. Free, public, and it tells you what the People team is actually being asked to do.
MXToolbox. The tool most people already use, and it is genuinely good for one domain at a time. It is a web form, so checking 40 sending domains means 40 visits.
Google Postmaster Tools. The only place you see what Gmail thinks of your reputation, and it is free. It covers Gmail, it needs domain verification, and it says nothing about the other half of your list.
Your sequencer's own health check. Instantly and Smartlead both ship one. They check the domains you send from, which is the point, and they will not check a domain you have not connected yet.
Read the DNS yourself. dig the SPF, DKIM and DMARC records for the sending domain, then check it against the public blocklists one at a time. Fifteen minutes per domain if you know what you are looking at.

Mamba Labs Apify Actors

These are the actors we built for this job. If yours is not covered here, search from the bar at the top of the page or contact us here and tell us what you need.

Domain Deliverability Checker1 preconfigured task on this page's job.