Replyz / Alternatives / AgentMail
AgentMail alternatives for giving your agent an inbox
AgentMail made "email for AI agents" a category. If you need EU hosting, more inboxes for the price, IMAP access or built-in code extraction, these are the alternatives worth comparing. We make Replyz, so it's listed first; the facts about the others come from their own pricing pages, checked on 6 November 2026.
At a glance
| Entry price | Inboxes | EU hosting | Built for | |
|---|---|---|---|---|
| Replyz | 19 € / month (planned) | 100 | Every plan | Personal agents and developers; wait and code extraction built in |
| Dead Simple Email | $29 / month (Pro) | 100 ($0.40 per extra) | Not stated | Agents that need IMAP/SMTP; code parsing built in |
| Nylas agent accounts | $15 / month (Essentials) | 10 agent accounts | US or EU, every plan | Agents that also need a calendar |
| Resend Inboxes | $1 per extra inbox / month | 3 per plan, then pay as you go | Not stated for inboxes | Teams already sending with Resend |
| AgentMail | $20 / month (Developer) | 10 ($2 per extra) | Enterprise only | Developers and startups |
Sources: replyz.io (planned prices, may change at launch), deadsimple.email, nylas.com/pricing, resend.com/pricing and agentmail.to/pricing, checked on 6 November 2026.
1. Replyz
EU-hosted email for AI agents, built first for personal agents such as OpenClaw, Hermes and Claude Code. One call waits for the next email (wait_for_email) and one returns the verification code or link (get_verification). Skill, CLI, remote MCP and SDKs, all open source. Planned at 19 € a month for 100 inboxes. Trade-off: in private early access, and no IMAP/SMTP until after launch.
2. Dead Simple Email
Inboxes with IMAP and SMTP credentials, a REST API, SDKs, a CLI and an MCP server. Verification codes are parsed automatically. Free plan with 5 inboxes; Pro is $29 a month for 100 inboxes. Trade-off: real-time delivery is through webhooks, WebSocket or SSE rather than a single wait call, and the hosting region isn't stated.
Replyz vs Dead Simple Email in detail
3. Nylas agent accounts
Nylas gives an AI agent its own email inbox and calendar, hosted by Nylas, and lets you choose US or EU hosting on every plan. Free plan with 3 agent accounts; Essentials is $15 a month with 10. Trade-off: part of a larger email and calendar API platform, priced across several kinds of accounts.
4. Resend Inboxes
Inboxes inside Resend, the email-sending API. Every plan includes 3 inboxes, and more cost $1 each per month on a paid plan. Trade-off: received email counts toward your sending quota, and the free plan is limited to 100 emails a day.
Replyz vs Resend Inboxes in detail
Not sure you need an inbox API at all? See inbox APIs vs sending APIs.
How to choose
- You run a personal agent and want it to sign up and read codes: Replyz.
- Your agent needs IMAP/SMTP today: Dead Simple Email.
- Your agent also needs a calendar: Nylas.
- You already send with Resend and need a few inboxes: Resend Inboxes.
- You need a mature product with the largest ecosystem: AgentMail.
Frequently asked questions
What are the best AgentMail alternatives?
Replyz, Dead Simple Email, Nylas agent accounts and Resend Inboxes all give an AI agent an inbox of its own. They differ in price per inbox, EU hosting, IMAP access and built-in code extraction.
Which AgentMail alternative is hosted in the EU?
Replyz stores mail in the EU on every plan. Nylas lets you choose US or EU hosting on every plan, including agent accounts. AgentMail lists an EU region on Enterprise only.
Which alternative extracts verification codes for the agent?
Replyz (get_verification) and Dead Simple Email both pull the code or link out of the email for the agent.
Which alternative gives IMAP and SMTP access?
Dead Simple Email includes IMAP and SMTP credentials on every inbox. Replyz plans IMAP and SMTP after launch.
What is the cheapest way to get 100 inboxes?
Dead Simple Email Pro is 29 dollars for 100 inboxes, and Replyz plans 100 inboxes for 19 euros. On AgentMail, 100 inboxes on the Developer plan come to about 200 dollars a month.