llms.txt
+11 −7
− - [Pricing](https://mails.ai/pricing): Self-serve only. Free 3K events / Pro $20 (50K+50K) / Scale $99 (250K+500K) + Metered ($0.001/send + $0.002/inbound (+$0.003 opt-in classify)) (coming soon). Dedicated IP available on request. No Enterprise gate.− - [vs AgentMail](https://mails.ai/vs/agentmail): AgentMail and Mails.ai both ship programmatic agent inboxes — the same primitive, different design choices. AgentMail is funded, in-market, and has 500+ B2B customers. Mails.ai goes deeper on typed reply events, prompt-injection scanning, per-agent reputation, and metered pricing.− - [vs Resend](https://mails.ai/vs/resend): Resend is the dev-loved modern email API. Send-first DNA, polished DX, React Email open source, ~$1B valuation. Mails.ai is built for agents that read inbound — typed reply events, prompt-injection scanning, per-agent reputation, MCP-native. Different shape, different center of gravity.− - [vs Postmark](https://mails.ai/vs/postmark): Postmark earned its premium-transactional reputation through deliverability obsession and human support. They are excellent at what they do. Mails.ai is built around the agent inbound primitive Postmark deliberately does not chase — typed reply events, injection scanning, MCP-native, metered economics.− - [Per-event metered pricing: why monthly tiers force over-commit](https://mails.ai/blog/per-call-mpp-pricing): Resend wants $20/month whether your agent sends 0 or 50,000 emails. Postmark wants $50. Agent traffic is bursty by nature — quiet days and incident spikes — so monthly tiers structurally force over-commit. Per-event metered pricing aligns cost to what you actually use, and incumbents cannot match without rebuilding their economics.− - [Email API for AI Agents: Inboxes on .ai Domains | mails.ai](https://mails.ai/blog/what-is-ai-email-address-how-ai-agents-use-real-email-domains): Provision @*.ai inboxes for AI agents via API, receive inbound replies as webhooks, and trigger async workflows. Code examples in the docs.− - [Per-event metered pricing](https://mails.ai/glossary/per-call-mpp): Mails.ai's usage-based pricing tier, coming soon — Stripe metered billing at $0.001/send + $0.002/inbound (+$0.003 opt-in classify). No monthly minimum. Aligns cost to actual agent send + inbound volume rather than over-committed monthly tiers.+ - [Pricing](https://mails.ai/pricing): Self-serve only. Free 3K events / Pro $20 (50K sends + 50K inbound) / Scale $99 (250K + 500K), monthly or yearly (two months free). Dedicated IP available on request. No Enterprise gate.+ - [vs AgentMail](https://mails.ai/vs/agentmail): AgentMail and Mails.ai both ship programmatic agent inboxes — the same primitive, different design choices. AgentMail is funded, in-market, and has 500+ B2B customers. Mails.ai goes deeper on typed reply events, prompt-injection scanning and per-agent reputation, and Scale includes unlimited agents.+ - [vs Resend](https://mails.ai/vs/resend): Resend is the dev-loved modern email API: send-first DNA, polished DX, React Email open source, and now Inboxes, a private beta aimed at agents. Mails.ai is built for agents that read inbound — typed reply events, prompt-injection scanning, per-agent reputation. Different shape, different center of gravity.+ - [vs Postmark](https://mails.ai/vs/postmark): Postmark earned its premium-transactional reputation through deliverability obsession and human support. They are excellent at what they do. Mails.ai is built around the agent inbound primitive Postmark deliberately does not chase — typed reply events, injection scanning, MCP-native, and a separate allowance for received mail.+ - [Per-event metered pricing: why monthly tiers force over-commit](https://mails.ai/blog/per-call-mpp-pricing): Resend wants $20/month for anything from 3,001 to 50,000 emails. Postmark's smallest paid plan is $15. Agent traffic is bursty by nature — quiet days and incident spikes — so monthly tiers structurally force over-commit. This post walks through the per-event math, and why we did not launch a metered plan ourselves.+ - [Agent Email Address: Why Every AI Agent Needs One](https://mails.ai/blog/agent-email-address-dedicated-routable-inbox): Why every AI agent needs a dedicated, routable email address — covering DNS identity, threading, deliverability, and inbox architecture.+ - [Best Email API for AI Agents 2026 | Full Comparison](https://mails.ai/blog/best-email-api-for-ai-agents-2026): Compare the best email APIs for AI agents in 2026. Pricing, inbound parsing, MCP support, and deliverability—with a clear recommendation.+ - [Thread Email Replies Programmatically: Complete Guide](https://mails.ai/blog/thread-email-replies-programmatically): Learn how to thread email replies programmatically using Message-ID, In-Reply-To, and References headers. Concrete code examples for Python and TypeScript.+ - [mails.ai — Email API & Inboxes for AI Agents](https://mails.ai/blog/what-is-ai-email-address-how-ai-agents-use-real-email-domains): Provision @*.ai inboxes, send transactional email, and receive inbound replies as webhooks. One API for the full email loop in agent workflows. See the docs.+ - [Per-event metered pricing](https://mails.ai/glossary/per-call-mpp): Usage-based email pricing: every send or received message is billed at a per-event rate, invoiced at month-end, with no monthly minimum. Mails.ai does not offer it; its plans are monthly or yearly, with separate send and inbound allowances.+ - [AI email management](https://mails.ai/glossary/ai-email-management): AI email management is the practice of using autonomous agents — not humans — to send, receive, classify, route, and reply to email through a programmatic API, with infrastructure-level controls for reputation, injection scanning, and sending policy.