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Warmerly Smartlead
One-to-one · Integrations

Integrations

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

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Smartlead details read from its pricing page, home page and help centre on 17 and 19 October 2026.

Warmerly

API (Agency plan), docs, MCP server

Smartlead

HubSpot, Salesforce, Pipedrive, Clay, Zapier, Make and n8n listed

The short answer

Integrations, in one look.

Warmerly has no named CRM connectors that we could find. It offers an API and signed webhooks on the Agency plan ($179 a month), which tools such as Zapier can call, and an MCP server on every plan for AI assistants. Smartlead is clearly ahead on integrations. Its integrations page shows 34 distinct named tools by our count, including HubSpot, Salesforce, Pipedrive, Clay, Slack and Zapier, and its API docs list six campaign webhook events (sent, opened, clicked, replied, bounced, unsubscribed). Smartlead's own pricing text says CRM access starts on Pro ($94 a month), so the integrations are not on every plan. Last checked 19 October 2026.

Warmerly

API (Agency plan), docs, MCP server

SmartleadSmartlead ahead on this row

HubSpot, Salesforce, Pipedrive, Clay, Zapier, Make and n8n listed

The picture

Drawn side by side.

What plugs in

Warmerly's routes in, and the native tool counts Smartlead's own page quotes

WarmerlySmartlead
WarmerlyThree routes in, and no app directory
  • APIAgency plan, $179 a monthYour own code, scripts or tools such as Zapier
  • WebhooksAgency plan16 mailbox health events, signed
  • MCP serverEvery plan, including FreeClaude, ChatGPT, Claude Code and Cursor, with OAuth
  • Named CRM appsNone foundWe searched the code and docs for HubSpot, Pipedrive and Salesforce connectors.
SmartleadNative tools per connection, as Smartlead states

Smartlead's page shows 34 distinct names by our count, and says Zapier connects 1,000+ apps. These counts are its own claims and we did not test any.

Native tool counts quoted by Smartlead on its integrations page, read 19 October 2026
ConnectionNative tools claimed
Pipedrive49
Attio20
Insightly17
GetSales.io17
Zoho CRM16
ClickUp13
Notion12
Supabase9
Anymail Finder5
ZenRows4

Warmerly: no named connector pages. Smartlead: 34 distinct names by our count. The two are not like for like: an API is a way to build a connection, a card is a ready made one.

What a webhook tells you

Which events each one can push to your own system

WarmerlySmartlead
16event types, all about mailboxes
6event types in its API docs, all about campaign emails
WarmerlySmartlead

About a campaign email

Email sentNoNot in its eventsYesEMAIL_SENT
Email openedNoNot in its eventsYesEMAIL_OPENED
Link clickedNoNot in its eventsYesEMAIL_CLICKED
Reply receivedNoNot in its eventsYesEMAIL_REPLIED
BounceNoNot in its eventsYesEMAIL_BOUNCED
UnsubscribeNoNot in its eventsYesEMAIL_UNSUBSCRIBED

About a mailbox

Health score dropYesscore_drop, score_floorNot foundNot in its API event list
Sign-in or login failureYesauth_fail, oauth_disconnectedPartlyA help article describes a disconnect payload
Automatic pause and resumeYesauto_paused, auto_resumedPartlyA help article is titled Bounce Autopause and Webhook
DNS record changeYesdns_changedNot foundNo event in its docs
Warmup finishedYesaged_inNot foundNo event in its docs

Warmerly's webhooks are on the Agency plan, Smartlead's on Pro and above per its pricing text. Smartlead's help articles describe a few more payloads than its API docs list, so the half marks are our reading of article titles, not tested events.

Pick the tool you use

What each product says about connecting to it

WarmerlySmartlead

HubSpot

Warmerly

No native connector found. Possible through the API on Agency, but webhooks do not send replies.

Smartlead

A native card plus a help article. Leads, deals and activity such as opens and replies go to HubSpot. Smartlead's pricing text puts CRM access on Pro and above.

Salesforce

Warmerly

No native connector found. The API on Agency is the route.

Smartlead

A card that says native two-way sync, while its FAQ says Salesforce syncs through OutboundSync. Its own pages disagree, so test it in the trial.

Pipedrive

Warmerly

No native connector found. The API on Agency is the route.

Smartlead

A card that claims 49 native tools, the largest count on its page.

Clay

Warmerly

No native connector found. The API on Agency is the route.

Smartlead

A card and a help article, Integrating Smartlead With Clay. Its FAQ calls it native.

Slack

Warmerly

No Slack app found. Webhooks carry mailbox health events only.

Smartlead

A card for real time updates, and a help article, Smartlead and Slack Integration.

Zapier

Warmerly

Through the API, on Agency. We found no Warmerly app listed in its docs, only the help page's mention of tools like Zapier.

Smartlead

A card that says 1,000+ apps without code. The help article is titled Zapier Setup (beta).

Make

Warmerly

No listed app found. The API on Agency could drive it.

Smartlead

Named in its home page FAQ, with no card on the integrations page.

n8n

Warmerly

No listed app found. The API on Agency could drive it.

Smartlead

A step by step guide in its help centre, and named in its home page FAQ.

Claude or ChatGPT

Warmerly

An MCP server on every plan, signed in with OAuth 2.1. It cannot start or resume campaign sending.

Smartlead

MCP with 170 actions claimed on its home page. The help article says Claude Desktop only, over SSE, with your API key in the connection URL.

Your own code

Warmerly

A REST API with an X-Api-Key header on the Agency plan, 60 requests a minute by default.

Smartlead

A REST API with an api_key query parameter, from Pro per its pricing text. Rate limits are published by tier.

Warmerly answers come from its docs and code. Smartlead answers come from its integrations page, help centre, API docs and home page, read on 19 October 2026. Where the two differ in depth we have said so rather than guess.

How Warmerly does it

Warmerly, in detail.

No named CRM or automation connectors found. You connect through the Agency API, 16 mailbox health webhook events, and an MCP server that works on every plan.

01

API and Zapier-style tools

The help page says an API key is for your own code, scripts or tools like Zapier. API keys and the API need the Agency plan ($179 a month). We found no listed Zapier, Make or n8n app of Warmerly's own in the docs.

Warmerly product, checked 19 October 2026

02

Webhooks: 16 mailbox health events

Outbound webhooks are signed POSTs about mailbox health. The 16 event types are score_drop, score_floor, oauth_disconnected, auth_fail, dns_changed, smtp_fail, imap_fail, flagged, auto_paused, auto_resumed, manual_pause, aged_in, marked_dead, oauth_refresh_fail, oauth_connected and oauth_reconnected. They do not cover opens, clicks or replies. Agency only, and each user can hold up to 10 subscriptions.

Warmerly product, checked 19 October 2026

03

How webhook deliveries behave

Every delivery carries an X-Warmerly-Signature header, the hex-encoded HMAC-SHA256 of the raw body. Each delivery is tried up to 3 times (0.5 seconds, then 1 second, between attempts). A failed event is not redelivered later, and a subscription switches itself off after 10 consecutive sweeps in which a delivery failed. Redirects are never followed.

Warmerly product, checked 19 October 2026

04

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. No tool can start or resume campaign sending.

Warmerly product, checked 19 October 2026

05

Mailbox connections

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

Warmerly product, checked 19 October 2026

06

Other channels

The code includes LinkedIn through a hosted service and WhatsApp as paid slots. These are channels inside Warmerly, not third-party app connectors.

Warmerly product, checked 19 October 2026

07

What each plan unlocks

Free, Starter and Growth get the MCP server but not the API or webhooks, which return a 403 agency_plan_required error. Agency ($179 a month, also in the 7-day Agency trial) adds the API and webhooks.

Warmerly product, checked 19 October 2026

08

No CRM sync found

We searched the product code and docs for HubSpot, Pipedrive and Salesforce connectors and found them only in lead-data and marketing files, not as integrations. If one exists outside the repo, we did not find it.

Warmerly product, checked 19 October 2026

How Smartlead does it

Smartlead, in detail.

A long list of named integrations, Zapier, webhooks at user, client and campaign level, a full API and an MCP server. Its pricing text puts CRM access, API and webhooks on Pro and above.

01

Named integrations

The integrations page shows 34 distinct names by our count, including Pipedrive, Salesforce, Attio, GoHighLevel, Zoho CRM, Insightly, HubSpot, OutboundSync, Notion, ClickUp, Cal.com, Slack, Intercom, Clay, Zapier, Gmail and Outlook. Several cards repeat, so the exact count is approximate. Its filter tabs are All, Sales/CRMs, Communication, Automation, Leads and Mailbox Providers.

smartlead.ai/integrations · read 19 October 2026

02

Native tool counts it claims

Cards quote how many native tools each connection offers: Pipedrive 49, Attio 20, Insightly 17, GetSales.io 17, Zoho CRM 16, ClickUp 13, Notion 12, Supabase 9, Anymail Finder 5 and ZenRows 4. These counts are Smartlead's own and we did not test any of them.

smartlead.ai/integrations · read 19 October 2026

03

HubSpot, in its help article

Setup uses custom HubSpot properties in a group called Smartlead. Leads and their updates go to HubSpot, deals are created at the HubSpot stage you choose for a lead category, and opens, clicks, unsubscribes and bounces are logged as notes. HubSpot lists can pull leads into campaigns. The article does not call it two-way sync and does not state a plan.

helpcenter.smartlead.ai/en/articles/127-how-to-set-up-hubspot-integration-with-smartlead · read 19 October 2026

04

Zapier, Make and n8n

The Zapier card says it connects to 1,000+ apps without code, and a help article is titled Zapier Setup (beta). The home page FAQ names Zapier, Make and n8n. Make has no card on the integrations page, and the help centre has a step by step n8n guide.

helpcenter.smartlead.ai/en/collections/24-api-integrations-and-webhooks · read 19 October 2026

05

Webhooks: six campaign events

The API docs list EMAIL_SENT, EMAIL_OPENED, EMAIL_CLICKED, EMAIL_REPLIED, EMAIL_BOUNCED and EMAIL_UNSUBSCRIBED. A webhook can be set at user, client or campaign level, and a user-level one takes priority. Help articles mention further payloads, such as lead category updated and campaign status changed, and an email or social platform disconnect payload.

api.smartlead.ai/core/webhooks · read 19 October 2026

06

Webhook retries

The API docs say failed deliveries are retried after 1 minute, 5 minutes, 15 minutes, 1 hour and 6 hours, and that a webhook is disabled after 5 failed attempts. They also say webhook deliveries are not subject to API rate limits. A help article says only that slow responses or errors cause retries, with no counts.

api.smartlead.ai/core/webhooks · read 19 October 2026

07

MCP server

The home page describes an MCP section with 170 actions across campaigns, leads, analytics and inbox. The help article says MCP works in Claude Desktop only, over SSE, with your API key placed in the connection URL.

helpcenter.smartlead.ai/en/articles/300-smartlead-mcp-server · read 19 October 2026

08

Which plans get CRM access

Smartlead's text pricing page says Pro is the first tier with CRM access, API and webhooks, and that Base does not include API and webhooks. The page says its prices were accurate as of 28 July 2026.

smartlead.ai/pricing.md · read 19 October 2026

What Smartlead does not say

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

  • Which plans get which individual integration: the pricing text names CRM access as starting on Pro, but no per tool plan table is published.
  • How deep each native integration goes beyond Smartlead's own wording; we did not test any.
  • Whether the Zapier app is still in beta: the help article is titled beta but the integrations page does not say so.
  • Which header carries Smartlead's webhook signature, and where its secret comes from.
  • Whether HeyReach and Aimfox are native: they appear in the FAQ and description but have no card.
The numbers

Only what we could verify.

Integrations: Warmerly and Smartlead side by side. Warmerly is in the first column.
MeasureWarmerlySmartlead
IntegrationsAPI (Agency plan), docs, MCP serverHubSpot, Salesforce, Pipedrive, Clay, Zapier, Make and n8n listed
Named integration cardsNo integrations page; none found34 distinct names by our count, some cards repeat
Native CRM connectorsNone foundPipedrive, Salesforce, HubSpot, Attio, GoHighLevel, Zoho CRM and Insightly listed
Largest native tool count claimedNo equivalentPipedrive, 49 native tools (its own claim)
ZapierThrough the API, on Agency; no Warmerly app foundListed, 1,000+ apps; help article marked beta
Make and n8nNo listed app foundMake named in the home page FAQ; n8n has a help guide
Webhook event types16, all about mailbox health6 campaign events in the API docs
Open, click and reply eventsNoYes
Plan for webhooksAgency, $179 a monthPro, $94 a month, and above; not Base
Webhook delivery tries3 attempts, then not redeliveredRetries after 1 minute, 5 minutes, 15 minutes, 1 hour and 6 hours; disabled after 5 failed attempts
Webhook signingHMAC-SHA256 in X-Warmerly-SignatureHMAC-SHA256 in its example; header and secret location not documented
MCP serverEvery plan including Free, OAuth 2.1Claude Desktop over SSE, API key in the URL, 170 actions claimed
Plan for CRM accessNo CRM connectors foundPro, $94 a month, and above
In practice

What it means for you.

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

1

Smartlead fits a CRM-led stack

Our reading: if replies must reach HubSpot, Salesforce or Pipedrive without code, Smartlead lists those connections and Warmerly does not.

2

The two webhook sets do different jobs

Our reading: Smartlead's six events describe what happened to a campaign email, which is what a CRM sync needs. Warmerly's 16 events describe a mailbox, such as a score drop or an auto pause, which suits an alerting or reporting script.

3

Warmerly is thin outside AI and API

Our reading: Warmerly's integration story is an Agency API, health webhooks and an MCP server. If you do not need those, you will have to move data between tools yourself.

4

The MCP routes differ in who can use them

Our reading: Warmerly's MCP server signs in with OAuth and is on Free. Smartlead's needs an API key in a config file, and its pricing text puts the API on Pro and above.

5

Smartlead's integrations are not on every plan

Our reading: its pricing text says CRM access starts on Pro at $94 a month, so Base at $39 may not give you the connection you are comparing. Confirm in the trial.

6

Check each connection in the trial

Our reading: Smartlead's claims about native depth are its own, and its Salesforce description differs between its card and its FAQ. Test the one you rely on in the 14-day trial.

Who it suits

Pick the one that fits.

Warmerly

Warmerly is the better fit if

  • You mainly want warmup and campaigns, with little need to sync to a CRM.
  • You use Claude or ChatGPT and want them to work in your workspace through MCP, with OAuth.
  • You are on Agency and can use the API and mailbox health webhooks for your own scripts.
Smartlead

Smartlead is the better fit if

  • You need native HubSpot, Salesforce or Pipedrive connections.
  • You want campaign event webhooks for opens, clicks and replies.
  • You already use Clay, Slack or Zapier in your outbound flow.
Questions
Which tools does Smartlead integrate with?

34 distinct names by our count, including HubSpot, Salesforce, Pipedrive, Clay, Slack and Zapier. Its pricing text says CRM access starts on Pro ($94 a month).

Does Warmerly have native CRM connectors?

None that we could find. It offers an API and signed webhooks on Agency ($179 a month), plus an MCP server on every plan.

Which webhook events exist?

Smartlead lists 6 campaign events, including opens, clicks and replies. Warmerly has 16 event types, all about mailbox health.

Does it work with Zapier?

Smartlead lists Zapier with 1,000+ apps, with its help article marked beta. Warmerly has no app, but Zapier can call its Agency API.

Sources

Smartlead pages were read on 19 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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