AISend vs Mailgun
A detailed comparison of AISend and Mailgun for sending transactional emails. Which email API is right for your application?
Overview
Both AISend and Mailgun provide email APIs for sending transactional emails from applications. AISend differentiates itself with a Resend-compatible request format (migrate by changing one base URL), a built-in MCP server so AI agents can send email, automatic bounce/complaint suppression, and lower flat pricing — 50,000 emails for $14/mo.
Features comparison
Key differences between AISend and Mailgun: API design and developer experience, custom domain support, webhook event tracking, bounce/complaint handling, and pricing structure. AISend keeps the modern Resend-style request format, adds an MCP server so LLM agents can send email directly, and handles hard bounces and complaints with automatic per-customer suppression so you don't have to build it.
Pricing
Pricing is a major factor when choosing an email API. Compare free tiers and trials, per-email costs at different volumes, and what's included in each plan. AISend offers a 3-day free trial with 500 emails and no credit card. Pro is $14/month for 50,000 emails — the same volume Resend charges $20/month for. Custom domains, webhooks, and the MCP server are available across tiers — no marketing-suite add-ons or per-contact fees.
Which should you choose?
Choose AISend if you want a clean transactional API at lower flat pricing, a one-line migration from Resend, and a built-in MCP server for AI-agent senders. Choose Mailgun if you're already deeply integrated and happy with its pricing.
More comparisons
Try AISend with a 3-day free trial
3-day free trial, 500 emails, no credit card. Resend-compatible API.
Start Free Trial