Instantly
Instantly is a cold email outbound platform that combines mailbox sending infrastructure, email warmup, a B2B lead database, deliverability tools, and a unified inbox for replies. The Instantly v2 REST API at api.instantly.ai/api/v2 publishes a 173-operation OpenAPI 3.1 covering campaigns and subsequences, leads and lead lists, sending accounts and warmup, email verification, inbox placement tests, SuperSearch enrichment, blocklists, custom tags, audit logs, background jobs, webhooks, analytics, API keys, workspaces and workspace groups. Authentication is a scoped Bearer API key backed by a full OAuth 2.0 authorization server with 178 published scopes, PKCE and dynamic client registration. Instantly also runs a hosted remote MCP server, publishes an A2A agent card, an llms.txt and first-party Agent Skills.
Instantly publishes 30 APIs on the APIs.io network, including Campaigns API, Account API, Account Campaign Mapping API, and 27 more. Tagged areas include Cold Email, Outbound, Sales, Deliverability, and Lead Database.
The Instantly catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Instantly’s developer surface includes authentication, documentation, API reference, getting-started guide, pricing, engineering blog, signup flow, and 42 more developer resources.
Kin Score
APIs 30
Individual APIs this provider publishes, each with its own machine-readable definition.
Instantly Campaigns API
The Campaigns API from Instantly — 10 operation(s) for campaigns.
Instantly Account API
An email account that can be used to send campaigns
Instantly Account Campaign Mapping API
Account Campaign Mapping
Instantly Analytics API
Endpoints related to analytics
Instantly API Key API
API Key
Instantly Audit Log API
Audit log records for tracking system activities
Instantly Background Job API
A background job that can be used to perform long-running tasks
Instantly Block List Entry API
A blocked email or domain
Instantly Campaign API
A campaign that can be sent to a list of recipients
Instantly Campaign Subsequence API
A subsequence entity representing a follow-up sequence
Instantly CRM Actions API
CRM related actions
Instantly Custom Tag API
A custom tag for organizing and categorizing accounts and campaigns. You can use them as filters in apis that list accounts and campaigns.
Instantly Custom Tag Mapping API
This entity represents a tag being assigned to a specific campaign or email account. When an email account is assigned a tag, a new custom tag mapping entry is created, which co...
Instantly DFY Email Account Order API
A Done-For-You email account order
Instantly Email API
A campaign email, a reply, a manually sent email, or any other email that's visible in the Unibox
Instantly Email Verification API
A single email verification
Instantly Inbox Placement Analytics API
Analytics data for individual emails in inbox placement tests
Instantly Inbox Placement Blacklist And Spam Assassin Report API
Report data for an inbox placement test
Instantly Inbox Placement Test API
An inbox placement test
Instantly Lead API
A lead entity representing an individual lead
Instantly Lead Label API
A custom label for categorizing and managing leads
Instantly Lead List API
A list used to store leads
Instantly O Auth API
OAuth authentication endpoints for connecting Google and Microsoft email accounts
Instantly Super Search Enrichment API
An enrichment can take different forms, such as email enrichment or LinkedIn enrichment. Leads may be imported from SuperSearch using the dedicated endpoint, or enriched directl...
Instantly Webhook API
A webhook subscription for receiving event notifications
Instantly Webhook Event API
A webhook event that was sent or attempted to be sent
Instantly Workspace API
A workspace entity representing a workspace
Instantly Workspace Billing API
Workspace Billing
Instantly Workspace Group Member API
A member of a workspace group. You can use the endpoints within this entity to manage the members of a workspace group.
Instantly Workspace Member API
A member of a workspace with associated user details
Scroll for all 30
Open Collections 3
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONInstantly.ai API v2 Campaigns API
OPEN COLLECTIONInstantly.ai API v2
OPEN COLLECTIONMCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Instantly MCP Server
MCP SERVERGraphQL 1
GraphQL schemas published by this provider.
Instantly GraphQL Schema
> **Not a provider surface — modelled, not published.** Instantly ships no GraphQL API. On
GRAPHQLPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Instantly Ai Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Instantly Ai Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Instantly Ai Webhooks
ASYNCAPISecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 6
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 5
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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