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Warmerly La Growth Machine
One-to-one · Integrations and API

Integrations and API

One row, in depth: what each tool does, the verified numbers, and who each suits.

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La Growth Machine details read from its pricing page, features pages, LinkedIn safety page, integrations page, developer docs and help centre on 21 and 22 October 2026.

Warmerly

The API and webhooks on the Agency plan, an MCP server on every plan; no CRM sync found.

La Growth Machine

Native HubSpot and Pipedrive sync on Ultimate, Zapier, Make, Clay, n8n, an open API, webhooks and an MCP server.

The short answer

Integrations and API, in one look.

Warmerly has an API and webhooks on the Agency plan and an MCP server on every plan, with no CRM sync found, while La Growth Machine lists native HubSpot and Pipedrive sync, so it is ahead on integrations. La Growth Machine lists native HubSpot and Pipedrive sync (on Ultimate), Zapier, Make, Clay, n8n, Slack, an open API with webhooks, and an MCP server. Warmerly has an API and mailbox-health webhooks on the Agency plan and an MCP server on every plan, with no CRM sync found. Last checked 22 October 2026.

Warmerly

The API and webhooks on the Agency plan, an MCP server on every plan; no CRM sync found.

La Growth MachineLa Growth Machine ahead on this row

Native HubSpot and Pipedrive sync on Ultimate, Zapier, Make, Clay, n8n, an open API, webhooks and an MCP server.

The picture

Drawn side by side.

Where each connects

Integrations each lists

WarmerlyLa Growth Machine
Warmerly
Gmail, Outlook, Zoho, SMTP and IMAPAPI on Agency16 mailbox-health webhooksMCP server
La Growth Machine
HubSpot and Pipedrive on UltimateZapier, Make, Clay, n8nOpen API and webhooksMCP server

The integrations page says native integrations are on all paid plans, while the pricing page puts CRM sync on Ultimate.

How Warmerly does it

Warmerly, in detail.

An API and 16 mailbox-health webhooks on the Agency plan, an MCP server on every plan, and connections for Gmail, Outlook, Zoho and SMTP and IMAP mailboxes. No CRM sync found.

01

An API, on the Agency plan

API keys and the API need the Agency plan ($179 a month). Keys start with wmv_, go in an X-Api-Key header to https://app.warmerly.com/api/v1, and each user can hold up to 10 active keys. The default limit is 60 requests a minute per key, adjustable from 1 to 120. Free, Starter and Growth get a 403 agency_plan_required error.

Warmerly product, checked 21 October 2026

02

16 mailbox-health webhooks

Outbound webhooks are signed POSTs about mailbox health. There are 16 event types, such as score_drop, auth_fail, dns_changed, auto_paused and aged_in. They do not cover opens, clicks or replies. Agency only, and each user can hold up to 10 subscriptions.

Warmerly product, checked 21 October 2026

03

Signed, retried deliveries

Every delivery carries an X-Warmerly-Signature header, the HMAC-SHA256 of the raw body. Each delivery is tried up to 3 times. A failed event is not redelivered later, and a subscription switches itself off after 10 consecutive sweeps in which a delivery failed.

Warmerly product, checked 21 October 2026

04

An MCP server on every plan

An MCP server at /api/mcp lets Claude, ChatGPT, Claude Code and Cursor read and act in a workspace after an OAuth 2.1 sign-in. It is on every plan including Free and needs no API key. Reads and writes share 60 calls a minute per connection, and no tool can start or resume campaign sending.

Warmerly product, checked 21 October 2026

05

Mailbox connections

Warmerly connects Gmail, Outlook, Zoho or any SMTP and IMAP mailbox, with Google and Microsoft sign-in. It also has hosted mailboxes.

Warmerly product, checked 21 October 2026

06

Zapier is a use of the key, not a listed app

Warmerly's use-the-api help page says a key is for your own code, scripts or tools like Zapier. We found no Warmerly app listed in Zapier or Make.

Warmerly product, checked 21 October 2026

07

Docs for machines

The docs site publishes /llms.txt and /llms-full.txt, generated from its pages, and an API reference checked against the routes by a test.

Warmerly product, checked 21 October 2026

08

Leads arrive by CSV or the lead database

Leads reach a campaign by CSV import on the Audience tab or from Warmerly's lead database. We found no HubSpot or Pipedrive list import.

Warmerly product, checked 21 October 2026

How La Growth Machine does it

La Growth Machine, in detail.

A long integration list, with most connections described as native.

01

CRM sync

HubSpot and Pipedrive sync, CRM enrichment and CRM workflow triggers are on Ultimate. Other CRMs can connect through Zapier.

lagrowthmachine.com/pricing · read 21 October 2026

02

Automation tools

The integrations page lists Zapier, Make, n8n and Clay as native, with 2-way sync, and Slack for alerts.

lagrowthmachine.com/integrations · read 21 October 2026

03

API and webhooks

An open API covers campaigns, audiences, leads, enrichment, messages, inbox and real-time webhooks, with an API key. Advanced integrations including API access are listed on Pro.

developers.lagrowthmachine.com · read 21 October 2026

04

MCP server

The page says the MCP server is free on every plan and during the trial, and that it is open source. Claude and ChatGPT can build, run and analyse campaigns through it.

lagrowthmachine.com/features · read 21 October 2026

05

Lead sources and intent

Sales Navigator, The Companies API, Huntool and Pharow for leads, and Warmly, RB2B, Buska and Trigify for intent, are listed as native.

lagrowthmachine.com/integrations · read 21 October 2026

06

API from Pro, with a key and a call log

The quickstart says the API is available from the Pro plan. The key sits under Settings, Integrations and API, calls use a Bearer header, and every call is logged in the workspace with a toggle to show only failures. The help centre says Basic has no API, Zapier or Clay, and Pro adds unlimited webhooks.

developers.lagrowthmachine.com/guides/quickstart · read 22 October 2026

07

Rate limit and credits

The developer notes for agents give 120 calls a minute per endpoint, with a wait on a 429 reply. Enrichment calls spend credits, so the notes tell an agent to check the credit balance first.

developers.lagrowthmachine.com/agents · read 22 October 2026

08

Docs written for machines too

It publishes an OpenAPI 3.1 file, llms.txt, llms-full.txt and a plain endpoint index, and an MCP server at mcp.lagrowthmachine.com.

developers.lagrowthmachine.com/agents · read 22 October 2026

09

The MCP server in detail

50 tools, 24 that read and 26 that act. You sign in with OAuth 2.1, with no key. It is free on every plan and in the trial, open source under Apache 2.0, and asks for your approval before writes by default. It starts from an existing campaign or template and duplicates it rather than writing a sequence from scratch. A read-only analysis agent needs Ultimate.

help.lagrowthmachine.com/en/articles/17612553-how-do-i-connect-la-growth-machine-to-claude-chatgpt-and-other-ai-assistants-mcp · read 22 October 2026

10

HubSpot sync, step by step

It needs Ultimate and admin rights in HubSpot. LGM checks for an existing contact by email, or by name and company, and creates one if none matches. Contacts it creates are non-marketing, so they do not raise HubSpot billing. Sync is not retroactive and must be switched on in each campaign. Skip rules can leave out leads already in a list, at a lifecycle stage or with a deal.

help.lagrowthmachine.com/en/articles/4971370-how-to-connect-hubspot-and-what-to-expect · read 22 October 2026

11

Field direction and owners

For HubSpot each mapped field has its own direction: to HubSpot, from HubSpot or both. Activities map to native emails, notes, tasks and communications, and each identity can be matched to a HubSpot owner. An owner already set is never overwritten.

help.lagrowthmachine.com/en/articles/6800156-how-do-crm-integrations-work · read 22 October 2026

12

n8n and Zapier

An official n8n node covers 13 resources and 51 operations. Zapier connects to 9,000 or more apps, and the help centre uses it for Salesforce, Close, Freshsales, Copper and Zoho.

lagrowthmachine.com/integrations · read 22 October 2026

What La Growth Machine does not say

We looked, and found no statement on these. That is about its published pages only, not about the product.

  • The list of webhook events and how a delivery is signed
  • A native Salesforce sync (its help centre syncs Salesforce through Zapier)
  • What Pipedrive syncs beyond contacts and activity

Where the sources disagree

We report each version rather than pick one.

  • The integrations FAQ says every native integration is on all paid plans, while the pricing page puts HubSpot and Pipedrive sync on Ultimate.
  • The integrations FAQ calls the MCP server coming soon, while the features and pricing pages say it is free on every plan.
The numbers

Only what we could verify.

Integrations and API: Warmerly and La Growth Machine side by side. Warmerly is in the first column.
MeasureWarmerlyLa Growth Machine
Integrations and APIThe API and webhooks on the Agency plan, an MCP server on every plan; no CRM sync found.Native HubSpot and Pipedrive sync on Ultimate, Zapier, Make, Clay, n8n, an open API, webhooks and an MCP server.
CRM syncNone foundHubSpot and Pipedrive, on Ultimate
API accessAgency plan, 60 requests a minute per keyPro and above
Webhooks16 mailbox-health events, Agency onlyReal-time webhooks
MCP serverOn every planFree on every plan
API rate limit60 a minute per key, adjustable 1 to 120120 calls a minute per endpoint
MCP toolsReads and writes, none can start sending50, of which 26 act
CRM list importNone foundHubSpot and Pipedrive lists
Automation apps namedZapier as an exampleZapier, Make, n8n, Clay
In practice

What it means for you.

Our reading of the facts above. Not a promise, and not the only reasonable reading.

1

Where Warmerly is behind

No CRM sync and no webhooks for opens, clicks or replies.

2

Check the plan

The integrations page says every native integration is on all paid plans, while the pricing page puts HubSpot and Pipedrive sync on Ultimate.

3

Reading the two rate limits

Warmerly's default is 60 requests a minute per key, which is 3,600 an hour. La Growth Machine's 120 a minute per endpoint is a different shape, as it counts each endpoint separately. They are not directly comparable, so test with the calls you will really make.

4

What a HubSpot sync needs on its side

Ultimate is $195 per identity a month billed monthly, or $165 billed annually, on the dollar price table. Two identities on Ultimate are $390 a month before any extra enrichment credits. Warmerly has no CRM sync, so a team that needs one in the same product is looking at that tier.

5

A reply that must land in a CRM on Warmerly

With no CRM sync, the options are the API on Agency at $179 a month, or a manual export. Mailbox-health webhooks do not cover replies, so the API is a poll, not a push.

Who it suits

Pick the one that fits.

Warmerly

Warmerly is the better fit if

  • You want mailbox-health webhooks and an MCP server without a CRM sync
  • You want an MCP server on the free plan to read mailbox health and run placement tests
  • You can live without a CRM sync
La Growth Machine

La Growth Machine is the better fit if

  • You want HubSpot or Pipedrive sync, Clay, n8n and a webhook for replies
  • You want HubSpot or Pipedrive to show every email and LinkedIn message on the contact
  • You want a verified n8n node and a documented rate limit
  • You want an API from the Pro plan, not Agency
Questions
Does La Growth Machine integrate with HubSpot?

Yes. HubSpot and Pipedrive sync are on its Ultimate plan, per its pricing page read on 21 October 2026.

Does Warmerly have an API?

Yes, on the Agency plan at $179 a month, with 16 mailbox-health webhook events. An MCP server is on every plan. We found no CRM sync.

Which La Growth Machine plan includes the API?

Pro and above. Its quickstart and help article both say the API is available from the Pro plan, and Basic has none.

Does La Growth Machine sync to Salesforce?

Through Zapier, according to its help centre. Native sync is listed for HubSpot and Pipedrive only.

Can an AI assistant send emails through either tool?

On La Growth Machine, an assistant can reply or launch a campaign after you approve. On Warmerly, no MCP tool can start or resume campaign sending.

Sources

La Growth Machine pages were read on 21 October 2026. Plans and wording change, so check the vendor's own page before you decide. Warmerly details come from the product as it runs today.

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