MyAgentMail vs Resend

Resend (resend.com) is one of the cleanest developer-experience email APIs on the market — well-loved transactional sending, beautiful dashboard, React Email integration. We use them ourselves as a fallback SMTP relay. They solve a different problem than we do. This post is for anyone trying to figure out which one to pick.

Quick summary

	MyAgentMail	Resend
Best for	AI agents that send + receive email and run LinkedIn outreach	Developer apps that send transactional email
Pricing model	Per-inbox subscription, optional LinkedIn add-on	Per-email volume tiers
Free tier	7-day free trial, all plans	3,000 emails / month, 100/day forever
Email send	✓	✓
Email receive (real inboxes with IMAP/threading)	✓	Inbound webhooks only — no IMAP, no threading state stored
LinkedIn outreach	✓ (signals, invites, DMs, posts)	✗
MCP server	✓ (myagentmail-mcp)	✗
CLI with browser-pairing auth	✓ (myagentmail-cli)	✗
Multi-tenancy	First-class (workspaces, isolated keys)	Single account model

Pricing comparison

MyAgentMail

Plans start at $5/month for the email module. The LinkedIn add-on starts at $29/month. Both come with a 7-day free trial; you can connect everything before paying. See /pricing for the full breakdown.

Resend

Free tier is generous — 3,000 emails/month, 100/day forever. Paid plans are volume-based: $20/mo for 50,000 emails (Pro), $90/mo for 100,000 emails (Business), enterprise above. Custom domains free on all paid plans, dedicated IPs from $30/mo extra. (As of 2026-05.)

If you're sending fewer than 100 emails a day, Resend's free tier is unbeatable. MyAgentMail doesn't have a permanent free tier because we host real IMAP inboxes and that costs us per-inbox even when idle.

Feature comparison

Two-way email vs send-only

Resend is a transactional sending platform. You send; recipients reply to whatever address you specify. There's an inbound webhook product but it's a stream of events, not a stored inbox — no threading, no IMAP, no read/unread state, no drafts API. If your agent needs to read email, you build the inbox yourself on top of their inbound webhook.

MyAgentMail provisions a real inbox per agent. Send via REST or SMTP, receive via webhook OR full IMAP, threads are stored and addressable, drafts are first-class, and there's a WebSocket stream for real-time updates. "My agent needs to send a follow-up after a lead replies" takes one API call on MyAgentMail; on Resend you wire up the inbound webhook plus your own database plus your own threading logic.

Email-only vs email + LinkedIn

Resend doesn't do LinkedIn. We do — connection requests, DMs, post engagement signals, intent monitoring. If your agent's outreach is multi-channel (which most modern outreach is), the integration glue between two vendors becomes the work. With MyAgentMail it's client.email.send(...) vs client.linkedin.connections.send(...) — same SDK, same key, same multi-tenancy.

Agent-first integration surface

We ship four on-ramps:

• CLI with Stripe-style browser pairing — myagentmail login opens a browser, you click Approve, the key writes to ~/.config at mode 0600. No copy-pasting keys.
• MCP server — npx -y myagentmail-mcp adds ~25 typed tools to Claude Desktop / Cursor / Windsurf / Cline.
• Typed SDK — npm install myagentmail.
• Raw HTTP — every endpoint is documented in markdown at /docs-md/<group>/<op> so agents can fetch a single endpoint's schema without parsing the 2,500-line OpenAPI YAML.

Resend has a typed SDK (also excellent) and human-friendly docs, but no MCP server, no CLI, and no agent-first artifacts like /llms.txt.

Deliverability + reputation

Resend has been investing heavily in deliverability infrastructure for years. Their dedicated-IP product is mature, their bounce-handling is best-in-class, and their team includes long-time email industry folks. For pure transactional sends at high volume, they're a better choice.

MyAgentMail uses ZeptoMail (Zoho's transactional infrastructure) under the hood for outbound, with SES as a backup. Bounce handling, complaint tracking, and per-inbox auto-pause on abuse signals are all built in, but if you're sending 1M+ emails/month and deliverability is your sole constraint, evaluate both.

Multi-tenancy

Resend is single-account. Multiple users/teams under one Resend account share API keys and quotas. MyAgentMail is multi-tenant by default — workspaces, scoped keys, per-tenant rate limits, isolated billing-ready customer hierarchies. If you're building a SaaS on top of an email API and your customers each need their own inbox, MyAgentMail saves you a quarter of integration work.

When to pick Resend

• You're sending high-volume transactional email from a human-built web app (password resets, receipts, notifications). Resend's pricing scales beautifully here, and the developer experience is genuinely best-in-class.
• Your free tier matters (under 100 emails/day, hobby project, MVP). Resend is free forever at that volume; we aren't.
• You're using React for email composition. React Email + Resend is a tightly integrated pairing.
• You don't need email receive, threading, or LinkedIn outreach. Resend is purpose-built and excellent for the narrow problem.

When to pick MyAgentMail

• You're building an AI agent that needs to send AND receive email, with threading, drafts, and a real inbox per agent.
• Outreach is multi-channel — your agent works leads on email AND LinkedIn. One vendor, one key, one integration surface.
• You're building multi-tenant SaaS where each customer needs an isolated inbox/account.
• Your integration audience is AI agents, not human developers. Our docs, MCP server, CLI, /llms.txt, and SKILL.md exist because we treat the agent as the actual reader at integration time.
• You want the cadence engine + LinkedIn intent signals built in. Both come standard; with Resend you're stitching them yourself.

Verdict

Use Resend if you're sending transactional email from a human-built app at scale. Use MyAgentMail if your problem is agentic outreach — agents that send, receive, and converse on email + LinkedIn. The two products solve different problems; we've happily used Resend's SMTP as a backup relay because their infrastructure is genuinely good at the thing they're built for.

→ Try MyAgentMail free for 7 days · Read the docs · For agents (CLI / MCP / SDK)

Comparison researched on 2026-05-02 against Resend's public docs and pricing page. We update this post when their structure changes — last reviewed 2026-05-02.