Category: Email/Newsletter
An email API built for agents, with 81 MCP tools.
SendHQ is a transactional email API positioned against the established developer sending services, not a marketing suite. You send through its API or command-line tool, with domain verification, deliverability handling and analytics. What makes it notable here is the agent surface: a first-party MCP server built into its CLI exposing eighty-one strictly typed tools across nine groups, with a published tool schema, strict validation and structured errors, installed with a single command and inheriting exactly the permissions of your workspace API key. Pricing is flat monthly for a large send allowance, with marketing-type sending costing more on the entry tier. It is built by a small multi-product shop and accepts cryptocurrency as well as cards.
One of the most agent-native products in this entire directory, and that is the reason it is listed. Eighty-one strictly typed MCP tools with a published schema and structured errors is a more serious agent surface than almost anything here, including products a hundred times the size, and installation is a single command. For anyone building email into an agent workflow it is worth knowing about. Price is low for the volume. Be clear about two things. It is a transactional sending API, not a marketing platform, so there is no campaign builder, list management or automation, and it sits alongside your marketing tool rather than replacing it. And the governance is the thinnest in this batch: no sub-processor list, no data processing agreement and no stated data region, while message bodies are stored. For a single-digit-headcount vendor handling your email, that is a real concentration risk worth weighing.
Best for: Technical marketers and developers wiring transactional email into an agent workflow or their own product.
Pricing: From $9/mo (Paid)
Rating: 3.5/5