Skip to content

Alternatives

Mailjet alternative: AgentiSend on price and guardrails

Is AgentiSend a Mailjet alternative?

Is AgentiSend a Mailjet alternative? Yes, for transactional email sent through an API. 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. It is not a replacement for a marketing editor, or for EU-based data centers.

Pick Mailjet when you want a marketing editor on the free plan, SMTP relay, or EU-based data centers with a SOC 2 report; pick AgentiSend when you want a free plan that does not expire, the Pro price at 50,000 emails against Essential at $40, and a send budget on every key. The figures below are from Mailjet pages fetched on 31 October 2026 and from this product's pricing table and published API.

What mattersAgentiSendMailjet
A spending limit per keyEvery 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 authentication page says each request uses a public API key and a private API key, and that a plan includes one primary key and one subaccount key. It does not list a send budget on a key. The pricing page does not list one either.
What a refusal tells youEvery refused request carries code, message, fix (the call that repairs it), docs_url and retryable.The status-code page lists a code, a reason and a description, including 401 for an incorrect key pair and 429 when the call rate is over the per-minute maximum. A field named fix that names the next call is not on that page.
A retry never sends twiceIdempotency-Key is accepted on every endpoint that changes something and remembered for 7 days.The send reference lists Messages, From, To, TextPart, HTMLPart and TemplateID. An idempotency key is not among the properties on that page.

Read further