Cloudflare Email Service alternative for AI agents: AgentiSend compared (2026)
Is AgentiSend a Cloudflare Email Service alternative?
Yes, AgentiSend is a Cloudflare Email Service alternative when an agent holds the key, while Cloudflare Email Service includes unlimited inbound routing on the free Workers plan. Every refused request carries code, message, fix (the call that repairs it), docs_url and retryable. A Free plan that does not expire: 3,000 emails a month, 100 a day, 3 domains, no card. Then plans from $9 a month (Starter, 30,000 emails). No plan daily cap; delivery paced per inbox provider. Or 40% off paid yearly.
Pick Cloudflare Email Service when you want unlimited inbound routing on the free Workers plan, with the message handled in your own Worker; pick AgentiSend when an agent holds the key and you want a per-key budget and a kill switch. The figures below are from Cloudflare Email Service pages fetched on 21 October 2026 and from this product's pricing table and published API.
| What matters | AgentiSend | Cloudflare Email Service |
|---|---|---|
| A spending limit per key | Every key is created with a send budget. The send path refuses with agent_budget_exceeded when it is spent, and a key cannot raise its own. The plan inclusion is a second ceiling (plan_limit_reached). | A per-key send budget is not on the pricing page or the limits page. Daily sending limits are per account. New accounts start with a quota that rises with sending behavior, and the limits page does not publish the starting number. |
| What a refusal tells you | Every refused request carries code, message, fix (the call that repairs it), docs_url and retryable. | A failed REST send returns success set to false and an errors array of numeric codes and messages. A field named fix that names the next call is not on that page. |
| A retry never sends twice | Idempotency-Key is accepted on every endpoint that changes something and remembered for 7 days. | An idempotency key is not documented on the REST send page. A repeated call is not described as returning the first result. |
| How long the log keeps a message | 7 days on Free, 30 on Starter, 90 on Pro, 180 on Scale. It is part of the plan and there is no add-on to buy. | The activity log filter covers a window from 30 minutes to 30 days. Message previews, when Email preview is on, are kept about 7 days. Sending and routing metrics are retained for 31 days. |
Read further
- AgentiSend vs Cloudflare Email Service: all 9 rows, with a source for each.
- Pricing: every plan and limit.
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