Email

Compare the 6 services in Email — independently verified, re-verified on a rolling schedule, graded on capability, pricing and compliance.

What is in Email

Hokai tracks 6 active tools in Email. 4 of them (67%) publish a free tier you can test before paying.

Email — Services

  • AgentMail — Email inbox API from a Y Combinator Summer 2025 startup that creates inboxes on demand for AI agents, with threads, webhooks, websockets and an MCP server.
  • Amazon SES — Amazon Simple Email Service sends and receives email at $0.10 per 1,000 on a la carte pricing, with receipt rules that hand mail to S3, SNS or Lambda.
  • Cloudflare Email Service — Cloudflare email routing and sending for Workers, with unlimited inbound and an Agents SDK onEmail hook; sending has been in beta since April 2026.
  • Postmark — Transactional email API from ActiveCampaign with inbound parsing on Pro, up to 365 days of activity retention, and an official 24-tool MCP server.
  • Resend — Developer email API for transactional and marketing mail that added Inboxes in October 2026, so each AI agent can own an address on your domain.
  • SendGrid — Twilio's email API, acquired in a deal valued at about $3 billion in 2019, for transactional and marketing mail with an Inbound Parse webhook.

Email pricing at a glance

Paid plans in Email start at $0.10 per month, with a median entry point of $19.95, and the highest published ceiling reaching $1,150. Figures cover the 2 of 6 listings that publish a price; the rest quote on request or bundle the tool into a wider plan. If budget is the constraint, 4 listings offer a free tier.

Frequently asked questions

How many services are there in Email?

Hokai currently lists 6 active entries in Email. Each is verified against the vendor's own pages and re-checked as those pages change, so the count moves as the category does.

Which services are listed under Email?

AgentMail, Amazon SES, Cloudflare Email Service, Postmark and Resend, among the 6 entries in this section. Each links through to a full profile covering what it does, how it is priced where that is published, and how it compares with the alternatives in the same category.

Are there free Email options?

Yes — 4 of the 6 listings in Email publish a free tier. Free tiers here usually cap usage volume or hold back the higher-end features rather than expiring, so they suit evaluation before committing.

How much do Email tools cost?

Published paid plans start at $0.10 per month, with the highest published ceiling at $1,150. That covers the 2 of 6 listings that publish a price — the remainder quote on request or fold the tool into a broader contract.