Brevo alternative for AI agents: AgentiSend compared (2026)
Is AgentiSend a Brevo alternative?
Yes, AgentiSend is a Brevo alternative for outbound mail an agent sends under a per-key budget, while Brevo hosts data in France and Germany. The send path refuses with agent_budget_exceeded when that budget is spent, and a key cannot raise its own. 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 Brevo when you want data hosted in France or Germany, unlimited transactional log retention, a dedicated IP on Enterprise, or SMS and WhatsApp on the same account; pick AgentiSend when an agent holds the key and you want a per-key budget and a kill switch. The figures below are from Brevo pages fetched on 21 October 2026 and from this product's pricing table and published API.
| What matters | AgentiSend | Brevo |
|---|---|---|
| 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 transactional page. |
| What a refusal tells you | Every refused request carries code, message, fix (the call that repairs it), docs_url and retryable. | The idempotency page names duplicate_parameter when a key is reused within 30 minutes. A field named fix that names the next call is not on that page. The inbound events reference lists a code and a message on a failure, and does not name a fix field. |
| A retry never sends twice | Idempotency-Key is accepted on every endpoint that changes something and remembered for 7 days. | The transactional page says idempotency is a UUID kept for 30 minutes so a retry does not send twice. The idempotency page says a key reused within 30 minutes returns a duplicate_parameter error and the request is not processed. It does not say the first result is returned. |
| 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 page says every plan includes transactional email with unlimited log retention. The transactional page calls retention flexible, including on the free plan, and does not restate a day count. The inbound events reference returns the last 30 days when no range is set, and a chosen range cannot exceed 30 days. |
Read further
- AgentiSend vs Brevo: all 11 rows, with a source for each.
- Pricing: every plan and limit.
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