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Tools · Published 2026-10-31

Email API cost calculator: AgentiSend vs Resend

The email API cost calculator prices a monthly volume on AgentiSend and Resend, in dollars and the percent saved.

Resend. Pro, 50,000 a month, $20. The inclusion covers this volume. $20 this month.

AgentiSend monthly. Starter, 30,000 a month, $9. The inclusion covers this volume. $9 this month. No daily cap on paid plans; delivery paced per inbox provider.

Yearly price. $64.80 billed for the year ($5.40 a month, 40% off).

Lifetime plan. Lifetime 250k, $49 once, 250,000 emails, up to 25,000 a month.

Saving. 55% less than Resend this month.

Resend prices from https://resend.com/pricing, checked on 31 October 2026. Resend sells monthly plans only. A daily peak applies where a plan publishes a daily cap. AgentiSend Free stops at 170 a day. No daily cap on paid plans; delivery paced per inbox provider. The daily peak is not applied to the Resend plans.

Type the emails you send in a month. A peak in one day is optional. The result names the cheapest Resend plan that holds the volume, including overage, the cheapest AgentiSend monthly plan, that plan's yearly price, and the lifetime plan whose monthly maximum holds it.

AgentiSend Free stops at 170 a day. No daily cap on paid plans; delivery paced per inbox provider. Resend's prices were checked on 31 October 2026, and the source is linked under the result. A daily peak is checked only against AgentiSend plans that publish a daily cap. It is not applied to the Resend plans.

The calculator runs in the browser. Nothing you type is stored, and no account is required.

The DNS check reads a domain, the SPF lookup checker counts lookups, the DMARC generator writes the record, the bounce decoder reads a diagnostic, and the budget calculator turns a volume into a key ceiling.