SendCore - Email Infrastructure for AI Agents

Email infrastructure built for AI agents and developers

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Updated Jul 2026 · Added Jul 2026

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What is Sendcore?

SendCore is an email infrastructure platform designed for AI agents, developers, and teams. It provides transactional email APIs, broadcast campaigns, AI agent inboxes with Model Context Protocol (MCP) integration, domain management, and deliverability monitoring - all in one unified platform. Developers can connect AI agents like Claude, Cursor, and Copilot via MCP, send emails through REST APIs or SDKs, and automate complex email workflows with real-time tracking and audit logs.

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Key Features of Sendcore

Agent Inboxes with unique email addresses for each AI agent
MCP integration with Claude, Cursor, and Copilot
Smart Webhooks with HMAC-SHA256 signing for inbound emails
Transactional API and SDK support
Visual drag-and-drop workflow builder
Multi-step email sequences with branching
Domain management with automated DNS discovery
Real-time delivery tracking and audit logs
SES and custom SMTP pool integration
OTP extraction and programmatic replies
Slack app for email management
Broadcast campaigns and trigger-based execution

Who Should Use Sendcore?

Automate email workflows for AI agents and workflows

Send transactional emails from applications and services

Manage agent inboxes and programmatic email replies

Extract OTPs and security codes from incoming emails

Create multi-step email marketing campaigns

Route customer communications based on engagement

Integrate email operations with existing developer stacks

Automate email sending directly from Slack

Sendcore: Pros & Cons

✓Pros

Developer-first API design with comprehensive documentation
Native integration with popular AI assistants (Claude, Cursor, Copilot)
No-code visual workflow builder for non-technical users
Real-time event tracking and complete audit logs
Transparent, simple pricing with no hidden fees
Enterprise-grade deliverability via SES and custom SMTP
MCP support for natural language email infrastructure management
Slack integration for seamless team collaboration

Frequently Asked Questions about Sendcore

Can I connect SendCore to Claude, Cursor, or Copilot directly?

Yes. SendCore integrates with Claude, Cursor, and Copilot via Model Context Protocol (MCP), which lets those AI agents send emails, read incoming messages, and manage your agent inboxes through natural language commands. You set up each AI agent with its own unique email address and inbox on SendCore.

How many agent inboxes do I get on the Free plan?

The Free plan includes 1 agent inbox. If you need more, the Starter plan gives you 3 agent inboxes for $19 per month, and the Growth plan offers 10 for $59 per month.

What happens to my email logs after they expire?

SendCore retains logs for 7 days on the Free plan and 30 days on the Starter plan; the Growth plan does not specify a retention limit. Check SendCore's documentation for exact Growth plan retention, or contact their team if you need longer retention for compliance.

Can SendCore extract OTPs from incoming emails automatically?

Yes. SendCore can extract one-time passwords and security codes from emails you receive, which is useful when your AI agent or application needs to authenticate with third-party services. The extracted codes are then available programmatically for your workflow.