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Warmerly Linked Helper

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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Linked Helper details read from its pricing page, home page, feature pages, safety kit and download page on 21 October 2026.

Warmerly LinkedIn

An API on Agency, an MCP server on every plan, no CRM connectors found

Linked Helper

12 listed integrations including Google Sheets, plus webhooks, Zapier, Make and n8n; no API mentioned

The short answer

Integrations and API, in one look.

Warmerly has a public API and 16 mailbox-health webhooks on the Agency plan and an MCP server on every plan, but no CRM connectors, while Linked Helper lists 17 integrations including HubSpot and Salesforce and is well ahead for CRM flow. Linked Helper lists 17 integrations, including HubSpot, Salesforce, Pipedrive, Close, Zoho, ActiveCampaign, Instantly, Apollo.io and Google Sheets, plus webhooks, Zapier, Make and n8n. We found no API on its pages. Warmerly has a public API and 16 mailbox-health webhooks on the Agency plan and an MCP server on every plan, but no CRM connectors of its own. If you need leads to flow into a CRM, Linked Helper is well ahead. Last checked 21 October 2026.

Warmerly LinkedIn

An API on Agency, an MCP server on every plan, no CRM connectors found

Linked HelperLinked Helper ahead on this row

12 listed integrations including Google Sheets, plus webhooks, Zapier, Make and n8n; no API mentioned

The picture

Drawn side by side.

Connections each side lists

CRM and tool connections, and webhook events

Warmerly LinkedInLinked Helper

Warmerly LinkedIn

CRM connectors found0

Mailbox-health webhook events16

Linked Helper

Integrations listed17

Warmerly's webhooks and API are on the Agency plan and cover mailbox health. Linked Helper lists webhooks, Zapier, Make and n8n, and no API.

How Warmerly does it

Warmerly, in detail.

An API and mailbox-health webhooks on the Agency plan, an MCP server for AI assistants on every plan, and mailbox connections. 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 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

Where Warmerly is behind

We found no named CRM connectors, no Zapier or Make app of our own, no webhook for replies or LinkedIn events, and no way to send a replied lead to a CRM from a sequence. Leads move in and out as CSV, and CSV import maps CRM export columns.

Warmerly product, checked 21 October 2026

How Linked Helper does it

Linked Helper, in detail.

A long list of named CRM and email connections, Google Sheets, outgoing and incoming webhooks and no-code connectors. No API is described.

01

The list

The integrations page lists 17 entries: HubSpot, Pipedrive, Close, HighLevel, ActiveCampaign, Salesforce, Streak, Zoho Recruit, Zoho, Capsule, Instantly, Apollo.io, Make, Zapier, n8n, Google Sheets and webhooks in general. The pricing page names native integrations for HubSpot, Salesforce, Pipedrive, Zoho CRM, Zoho Recruit, ActiveCampaign, Close, Capsule, Streak, HighLevel, Instantly and Google Sheets.

linkedhelper.com/integrations/all-integrations · read 21 October 2026

02

What moves

Examples on the page: verified emails pushed to HubSpot, prospects with full profile data to Pipedrive with lead statuses updated on reply, leads with messaging history logged as activity in Close, leads with custom field mapping to Salesforce, and profiles with any field mapped to a column in Google Sheets.

linkedhelper.com/integrations/all-integrations · read 21 October 2026

03

Outgoing webhooks

Outgoing webhooks send data to third-party systems, including CRM sync after a prospect accepts an invite, is tagged or replies. The page does not explain how they are configured, and lists them on both Local and Cloud.

linkedhelper.com/features/incoming-webhooks · read 21 October 2026

04

Incoming webhooks, on Cloud

In campaign settings you add a label and a unique URL is generated, which you paste into n8n, Zapier, Make, Albato or a custom CRM. Several can feed one campaign, and leads queue in a 'Profiles to process' list. Incoming webhooks need the Cloud version.

linkedhelper.com/features/incoming-webhooks · read 21 October 2026

05

Zapier reach

The page claims Zapier and webhooks connect to 7,000+ apps. That figure is Linked Helper's and we did not verify it.

linkedhelper.com/integrations/all-integrations · read 21 October 2026

06

Standard plan limit

Webhook integrations are limited to 20 profiles a day on Standard and are unlimited on Pro. Standard webhooks do not support messaging history. The agencies page says Standard includes up to 20 CRM sends a day, and that CRM sends do not use LinkedIn's daily limits.

linkedhelper.com/solutions/agencies · read 21 October 2026

07

Export

CSV export of people and organisations is on both plans, and Pro adds messaging-history export to CSV and webhooks. The Data Export page says up to 200+ data points per lead can be exported.

linkedhelper.com/pricing · read 21 October 2026

08

Webhooks and CSV together

Linked Helper says CSV export of people and organisations is on both plans, and that Google Sheets is connected directly, described as working without Zapier or Make. Profiles can be sent with any field mapped to a column, together with messaging history.

linkedhelper.com/integrations/all-integrations · read 21 October 2026

What Linked Helper does not say

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

A public API, API keys or API documentation
Which integrations are native and which go through webhooks, apart from Google Sheets
Payload structure, authentication or error handling for webhooks
Whether incoming webhook profiles count against the daily action limit
The exact fields that move to most CRMs

Where the sources disagree

We report each version rather than pick one.

Linked Helper's pricing page names 12 native integrations while its integrations page lists 17 entries, and the home page logos include Gmail, which its written text does not mention.

The numbers

Only what we could verify.

Integrations and API: Warmerly and Linked Helper side by side. Warmerly is in the first column.
Measure	Warmerly LinkedIn	Linked Helper
Integrations and API	An API on Agency, an MCP server on every plan, no CRM connectors found	12 listed integrations including Google Sheets, plus webhooks, Zapier, Make and n8n; no API mentioned
Named integrations	None for CRMs found	17 listed
Public API	Yes, Agency plan	Not found
Webhook events	16, mailbox health only	Lead events to CRMs; list not documented
Incoming webhooks	Not found	Yes, on Cloud
Zapier and Make	None of our own found	Zapier, Make and n8n via webhooks
MCP for AI tools	Every plan	Not found
Webhook cap on entry plan	Webhooks need Agency	20 profiles a day on Standard

In practice

What it means for you.

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

1

A CRM changes the answer

If replies and tags must land in HubSpot, Salesforce or Pipedrive without manual work, Linked Helper does that and Warmerly, as far as we found, does not.

2

Warmerly's API is about the mailbox

Its API and webhooks cover mailbox health and account actions, and are on Agency only. They are not a way to push LinkedIn replies into another system.

3

Neither shows an API for LinkedIn leads

Linked Helper has webhooks and exports and no described API. Warmerly has an API, but its LinkedIn side is not a data feed. Plan on CSV and webhooks.

4

MCP is a different kind of integration

Warmerly's MCP server lets an AI assistant read and act in a workspace, with no tool that can start or resume sending. It is useful for checking status, and is not a CRM sync.

5

Check the limit before you build

On Linked Helper Standard, webhooks stop at 20 profiles a day. If you push every reply to a CRM, price Pro.

6

Decide which system owns the lead

If your CRM is the source of truth, Linked Helper can push into it as replies arrive. If Warmerly is, you will export and import by hand or by script, because we found no connector that does it for you.

Who it suits

Pick the one that fits.

Warmerly LinkedIn

Warmerly is the better fit if

You want an API and signed webhooks for mailbox health
You want to let an AI assistant read your workspace through MCP
You are happy to move leads as CSV

Linked Helper

Linked Helper is the better fit if

You want leads, replies and tags to flow into a CRM
You want incoming webhooks to feed campaigns from forms or deals
You want Google Sheets, Zapier, Make or n8n connections

Questions

Does Linked Helper have an API?

We found none on its pages. It lists webhooks, Zapier, Make and n8n, and says Zapier and webhooks connect to 7,000+ apps.

Does Warmerly connect to HubSpot?

We found no HubSpot connector in Warmerly. Linked Helper lists HubSpot with verified emails pushed to it.

Which plan needs Warmerly's API?

Agency, at $179 a month. Free, Starter and Growth receive a 403 error from the API.

Do webhooks cost extra on Linked Helper?

Not as a separate price on its pages. Standard limits webhook integrations to 20 profiles a day and Pro does not. Incoming webhooks need Cloud storage.

Can an AI assistant use Warmerly without an API key?

Yes, through its MCP server, after an OAuth 2.1 sign-in. It is on every plan, shares 60 calls a minute per connection, and has no tool that can start or resume campaign sending.

Sources

Linked Helper 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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