Instantly.AI API Documentation & MCP Config | Salestools Club
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Sales Engagement

Instantly.ai

The gold standard for cold email infrastructure and automation.

Key Features
Automate Cold Email
Inbox Warmup
Campaign Analytics
Cold Email Outreach
How to use this tool
"Claude, check my 'SaaS Founders' campaign in Instantly and pause it if the bounce rate is over 3%."
Technical Feature Analysis

Instantly.ai is built for AI-first teams, specifically for workflows where you want an AI agent to handle your Sales Engagement tasks. Instead of manual data entry, Instantly.ai lets your AI "see" and "act" on your data directly through its REST.

Instantly.ai provides a robust REST API for managing cold email campaigns and tracking deliverability. With its new MCP capabilities, you can now use Claude to manage campaigns, monitor bounce rates, and pause sequences using natural language. It is built for agencies and sales teams that need to scale outbound email without sacrificing deliverability.

The biggest win with Instantly.ai is the ability to move from **Chat-to-Action**. By connecting it to your AI agent, you can automate Automate Cold Email, Inbox Warmup, Campaign Analytics without having to build a custom tech stack or hire a developer.

Direct Agent Workflow for Instantly.ai

Connect: Give your Instantly.ai API Key to Claude Code, Cowork, or your favorite AI agent.

Automate: Your agent handles Automate Cold Email and Inbox Warmup directly.

Execute: No extra software or middleware required for Sales Engagement automation.

Use Instantly.ai for
Technical Details
API Type
REST
Authentication
API Key
Pricing Tier
Paid Only
SDK Languages
N/A
Webhooks
Yes

Frequently Asked Questions

What does Instantly.ai do?

Instantly.ai is a sales engagement tool that provides The gold standard for cold email infrastructure and automation.

How do I use Instantly.ai with AI agents?

Connect Instantly.ai to agents like Claude Code or Cowork by using its REST and your API Key keys. This allows your agent to perform Automate Cold Email and Inbox Warmup directly without needing extra software.

Is Instantly.ai API free?

No, Instantly.ai is a premium service. You can view their full pricing details at their official website.

What are the best alternatives to Instantly.ai?

Based on features and use cases, the top alternatives to Instantly.ai are Lemlist, Smartlead, Woodpecker and Success.ai.