Glossary.

Plain-English definitions of the terms used across AI-native email, MCP, and modern email marketing. Every term links to a deeper explainer.

Email MCP

An email MCP is a Model Context Protocol server that lets AI agents send email and run a marketing platform through typed tool calls, not a dashboard.

Agentic email

Agentic email is email marketing operated primarily by AI agents, where the agent drafts, segments, sends, and optimises campaigns via APIs and MCP tools.

Transactional email

Transactional email is a one-to-one email sent in response to a user action: signup confirmation, password reset, receipt, magic link, invoice, shipping update.

BYO sending keys

BYO sending keys lets you connect your own provider (SES, Resend, Postmark, Mailgun, SendGrid) to an email platform, so it runs campaigns while your provider sends.

MCP (Model Context Protocol)

MCP (Model Context Protocol) is the open standard from Anthropic for connecting AI agents to external tools and data sources through a typed, introspectable interface.

nitrosend is the fastest email platform that works where you work. Prompt it from Claude. Trigger it from your code. Let it run your email marketing while you build your product.

It's not an email tool with AI features. It's an AI that does your email marketing.

We're obsessed with speed. Not because speed is trendy, but because speed is the thing that separates the people who ship things that change lives from the people who plan to ship. Every minute you spend configuring email automations is a minute you're not talking to customers, writing code, or selling.

We believe the best tools disappear into your workflow. You shouldn't have to learn our interface.

We're George, Ed and Kam, and we're building nitrosend because the world has shifted and email hasn't caught up. Until now - welcome to faster email.