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Smartlead

Smartlead is cold email infrastructure for outbound sales and lead generation, focused on inbox deliverability through unlimited mailbox rotation, automated warmup, and a unified master inbox. Smartlead exposes a REST API at server.smartlead.ai/api/v1 covering campaigns, leads, email accounts, email warmup, webhooks, analytics, and client management, with API key authentication via query parameter.

7 APIs 0 Features
Cold EmailOutboundSalesDeliverabilityEmail WarmupAutomationSequences

Smartlead publishes 7 APIs on the APIs.io network. Tagged areas include Cold Email, Outbound, Sales, Deliverability, and Email Warmup.

Smartlead’s developer surface includes documentation, API reference, getting-started guide, pricing, engineering blog, signup flow, YouTube channel, and 8 more developer resources.

APIs

Smartlead Campaigns API

REST endpoints to create, list, fetch, update, schedule, pause, resume, and delete email campaigns, plus manage sequences, A/B variants, and sender account assignments inside a ...

Smartlead Leads API

Endpoints to add leads to a campaign in bulk, fetch leads, update lead status (interested, replied, unsubscribed), search leads globally, and manage lead categories.

Smartlead Email Accounts API

Endpoints to add, list, update, and remove sender mailboxes (SMTP, Gmail, Outlook), assign them to campaigns, and track per-account sending limits and warmup state.

Smartlead Email Warmup API

Endpoints for managing Smartlead's deliverability warmup engine — enabling warmup per mailbox, configuring ramp settings, and reading warmup reputation and stats.

Smartlead Webhooks API

CRUD endpoints for campaign-scoped webhook subscriptions covering lead events (sent, opened, clicked, replied, bounced, unsubscribed) used to stream Smartlead activity to extern...

Smartlead Analytics API

Endpoints for campaign and account-level analytics — sent, open, click, reply, bounce, and unsubscribe metrics aggregated over time ranges.

Smartlead Client Management API

Endpoints for agency users to provision and manage white-labeled client accounts, assign permissions, and meter usage across multiple end customers.

Resources

🔗
Website
Website
🔗
App
App
🔗
Documentation
Documentation
🔗
APIReference
APIReference
🚀
GettingStarted
GettingStarted
💰
Pricing
Pricing
📰
Blog
Blog
📝
SignUp
SignUp
📝
SignIn
SignIn
🔗
Help
Help
📜
PrivacyPolicy
PrivacyPolicy
📜
TermsOfService
TermsOfService
🔗
LinkedIn
LinkedIn
🔗
Twitter
Twitter
👥
YouTube
YouTube

Sources

apis.yml Raw ↑
aid: smartlead-ai
url: https://raw.githubusercontent.com/api-evangelist/smartlead-ai/refs/heads/main/apis.yml
name: Smartlead
kind: company
description: >-
  Smartlead is cold email infrastructure for outbound sales and lead
  generation, focused on inbox deliverability through unlimited mailbox
  rotation, automated warmup, and a unified master inbox. Smartlead exposes a
  REST API at server.smartlead.ai/api/v1 covering campaigns, leads, email
  accounts, email warmup, webhooks, analytics, and client management, with API
  key authentication via query parameter.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Cold Email
  - Outbound
  - Sales
  - Deliverability
  - Email Warmup
  - Automation
  - Sequences
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.19'
apis:
  - aid: smartlead-ai:campaigns-api
    name: Smartlead Campaigns API
    description: >-
      REST endpoints to create, list, fetch, update, schedule, pause, resume,
      and delete email campaigns, plus manage sequences, A/B variants, and
      sender account assignments inside a campaign.
    humanURL: https://api.smartlead.ai/reference/campaigns
    baseURL: https://server.smartlead.ai/api/v1/campaigns
    tags:
      - Campaigns
      - Sequences
      - Scheduling
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:leads-api
    name: Smartlead Leads API
    description: >-
      Endpoints to add leads to a campaign in bulk, fetch leads, update lead
      status (interested, replied, unsubscribed), search leads globally, and
      manage lead categories.
    humanURL: https://api.smartlead.ai/reference/leads
    baseURL: https://server.smartlead.ai/api/v1
    tags:
      - Leads
      - Contacts
      - Prospects
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:email-accounts-api
    name: Smartlead Email Accounts API
    description: >-
      Endpoints to add, list, update, and remove sender mailboxes (SMTP, Gmail,
      Outlook), assign them to campaigns, and track per-account sending limits
      and warmup state.
    humanURL: https://api.smartlead.ai/reference/email-accounts
    baseURL: https://server.smartlead.ai/api/v1/email-accounts
    tags:
      - Email Accounts
      - SMTP
      - Mailboxes
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:email-warmup-api
    name: Smartlead Email Warmup API
    description: >-
      Endpoints for managing Smartlead's deliverability warmup engine —
      enabling warmup per mailbox, configuring ramp settings, and reading
      warmup reputation and stats.
    humanURL: https://api.smartlead.ai/reference/email-warmup
    baseURL: https://server.smartlead.ai/api/v1/email-accounts
    tags:
      - Warmup
      - Deliverability
      - Reputation
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:webhooks-api
    name: Smartlead Webhooks API
    description: >-
      CRUD endpoints for campaign-scoped webhook subscriptions covering lead
      events (sent, opened, clicked, replied, bounced, unsubscribed) used to
      stream Smartlead activity to external systems.
    humanURL: https://api.smartlead.ai/reference/webhooks
    baseURL: https://server.smartlead.ai/api/v1/webhooks
    tags:
      - Webhooks
      - Events
      - Subscriptions
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:analytics-api
    name: Smartlead Analytics API
    description: >-
      Endpoints for campaign and account-level analytics — sent, open, click,
      reply, bounce, and unsubscribe metrics aggregated over time ranges.
    humanURL: https://api.smartlead.ai/reference/analytics
    baseURL: https://server.smartlead.ai/api/v1
    tags:
      - Analytics
      - Reporting
      - Metrics
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
  - aid: smartlead-ai:client-management-api
    name: Smartlead Client Management API
    description: >-
      Endpoints for agency users to provision and manage white-labeled client
      accounts, assign permissions, and meter usage across multiple end
      customers.
    humanURL: https://api.smartlead.ai/reference/client-management
    baseURL: https://server.smartlead.ai/api/v1
    tags:
      - Clients
      - Agency
      - Multi-Tenant
    properties:
      - type: Documentation
        url: https://api.smartlead.ai/reference
common:
  - type: Website
    url: https://www.smartlead.ai
  - type: App
    url: https://app.smartlead.ai
  - type: Documentation
    url: https://api.smartlead.ai/reference
  - type: APIReference
    url: https://api.smartlead.ai/reference
  - type: GettingStarted
    url: https://api.smartlead.ai
  - type: Pricing
    url: https://www.smartlead.ai/pricing
  - type: Blog
    url: https://www.smartlead.ai/blog
  - type: SignUp
    url: https://app.smartlead.ai/signup
  - type: SignIn
    url: https://app.smartlead.ai/login
  - type: Help
    url: https://help.smartlead.ai
  - type: PrivacyPolicy
    url: https://www.smartlead.ai/privacy-policy
  - type: TermsOfService
    url: https://www.smartlead.ai/terms-of-service
  - type: LinkedIn
    url: https://www.linkedin.com/company/smartleadhq
  - type: Twitter
    url: https://x.com/smartlead_ai
  - type: YouTube
    url: https://www.youtube.com/@smartlead
integrations:
  - name: Clay
  - name: HubSpot
  - name: Salesforce
  - name: Pipedrive
  - name: Zapier
  - name: Make
  - name: n8n
  - name: Slack
maintainers:
  - FN: Kin Lane
    email: [email protected]