Compare
AgentiSend vs Resend
Is AgentiSend a Resend alternative? Yes, for any app sending transactional email through an API: the same request shape, 20% under Resend on every volume Resend sells, yearly billing Resend does not offer, and a send budget on every key, so an agent can hold one. It is not a replacement for React Email. A Free plan that does not expire: 5,000 emails a month, 170 a day, 3 domains, no card. Then plans from $9 a month (Starter, 30,000 emails). No daily cap on paid plans; delivery paced per inbox provider. Or 40% off paid yearly. On price, lifetime plans are up to 75% cheaper than Resend for the same emails sent at the same pace.
Pick Resend when you want React Email, inbound mail on every plan, a SOC 2 Type II report, or a dedicated IP with a published price of $30 a month; pick AgentiSend when price, a free plan that does not expire, yearly billing or a per-key budget decides it. The figures below are from Resend pages fetched on 31 October 2026 and from this product's pricing table and published API.
Moving across? How a migration from Resend actually goes.
| What matters | AgentiSend | Resend |
|---|---|---|
| Trying it before paying | A Free plan that does not expire: 5,000 emails a month, 170 a day, 3 domains, no card. Then plans from $9 a month (Starter, 30,000 emails). No daily cap on paid plans; delivery paced per inbox provider. Or 40% off paid yearly. | Free is $0: 3,000 emails a month, 100 a day, 3 domains, and 30-day data retention. It does not expire. Paid plans are billed monthly only; the pricing page says there are no annual plans. |
| 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). | The pricing page lists API key permissions on every plan. It does not list a send budget per key. |
| A retry never sends twice | Idempotency-Key is accepted on every endpoint that changes something and remembered for 7 days. | Idempotency-Key is supported on sending an email, sending a batch, and on sending an inbox draft, replying to a thread and forwarding a thread. Keys are kept for 24 hours and can be up to 256 characters. |
| What a refusal tells you | Every refused request carries code, message, fix (the call that repairs it), docs_url and retryable. | The rate-limit page names daily_quota_exceeded and monthly_quota_exceeded. A fix field naming the next call is not on that page. |
| 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 pricing table lists data retention of 30 days on Free, Pro and Scale, and flexible data retention on Enterprise. |
| Receiving mail | Receiving is a switch on each verified domain: publish one MX record and mail to that domain is stored on your account, with extracted_text beside the raw body, a clear or review label on every message, an optional hold until a person releases it, and allow and block rules per domain. There is no inbox object; the domain is the address. | Inbound email is listed on every plan. |
| Audited security reports | None yet. No SOC 2 report and no penetration-test letter exist, and /security says so. | SOC 2 Type II is listed on every plan. |
| DKIM key length | 2048-bit RSA. The key is generated when the domain is added. | Resend signs with 1024-bit DKIM keys and says it does not support 2048-bit keys. The page argues 1024-bit meets the RFC minimum and current bulk-sender rules. |
| Knowing how close you are to a rate limit | ratelimit-limit, ratelimit-remaining and ratelimit-reset on every response, plus x-request-id. | The default maximum is 10 requests a second per team, shared across keys. The same page documents ratelimit-limit, ratelimit-remaining, ratelimit-reset and retry-after. |
| A dedicated address | Dedicated IP on request. Once one is assigned, the published ramp is 20% of volume to day 7, 40% to day 14, 60% to day 21, 80% to day 28, then all of it, on GET /dedicated-ips/ramp. | Dedicated IPs are $30 a month on Scale, for customers sending more than 3,000 emails a day, with automatic warmup. |
| Written uptime commitment | 99.9% monthly uptime on the Scale plan, measured on GET /status. Credits are Scale-only and applied after you write to support. | A 99.99% uptime SLA is listed on Enterprise. Free, Pro and Scale do not list an uptime SLA. Scale and Enterprise list an urgent response SLA. |
Lifetime plans against the same emails on Resend
Up to 75% cheaper than Resend. Each lifetime plan next to the same emails bought from Resend at the same pace: the plan’s monthly maximum every month, for as many months as its emails last, on Resend’s cheapest paid plan that covers that maximum. Sending less each month makes the plan last longer and widens the gap.
| Lifetime plan | Paid once | Emails | Months at the maximum | Same emails on Resend | Cheaper by |
|---|---|---|---|---|---|
| Lifetime 250k | $49 | 250,000 | 10 | Pro 50,000 a month, $20 × 10 = $200 | 75% |
| Lifetime 600k | $99 | 600,000 | 12 | Pro 50,000 a month, $20 × 12 = $240 | 58% |
| Lifetime 1.5M | $199 | 1,500,000 | 15 | Pro 100,000 a month, $35 × 15 = $525 | 62% |
| Lifetime 3M | $349 | 3,000,000 | 30 | Pro 100,000 a month, $35 × 30 = $1,050 | 66% |
Resend prices from https://resend.com/pricing, checked on 31 October 2026. Resend sells monthly plans only.
The email API cost calculator prices one monthly volume on the AgentiSend and Resend tables and shows the saving in percent.
Read further
Sources
- Trying it before paying. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- A spending limit per key. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- A retry never sends twice. Ours: the published API, /pricing and /security. Theirs: https://resend.com/docs/dashboard/emails/idempotency-keys (captured 2026-10-31).
- What a refusal tells you. Ours: the published API, /pricing and /security. Theirs: https://resend.com/docs/api-reference/rate-limit (captured 2026-10-31).
- How long the log keeps a message. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- Receiving mail. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- Audited security reports. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- DKIM key length. Ours: the published API, /pricing and /security. Theirs: https://resend.com/docs/knowledge-base/do-i-need-2048-dkim (captured 2026-10-31).
- Knowing how close you are to a rate limit. Ours: the published API, /pricing and /security. Theirs: https://resend.com/docs/api-reference/rate-limit (captured 2026-10-31).
- A dedicated address. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).
- Written uptime commitment. Ours: the published API, /pricing and /security. Theirs: https://resend.com/pricing (captured 2026-10-31).