Compare
AgentiSend vs Mailjet
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.
Moving across? Send the first message.
| What matters | AgentiSend | Mailjet |
|---|---|---|
| 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 a month for 6,000 emails, on every slider step. The pricing page says no card is required at sign-up, with a maximum of 200 emails a day. Starter is $9 a month for 8,000 emails, with no daily sending limit, or $8.10 a month when billed yearly. |
| Price at 50,000 emails a month | $16 a month on Pro, which is $0.32 per 1,000. Sending pauses at the inclusion unless an owner turns overage on, up to a ceiling they set. | At the 50,000-email step, Essential is $40 a month ($36 billed yearly) and Premium is $59 a month ($53.10 billed yearly). There is no 10,000-email step. The steps are 8,000, 15,000, 50,000, 100,000, 250,000 and 500,000. |
| Price at 100,000 emails a month | $16 a month on Pro, which is $0.32 per 1,000. Sending pauses at the inclusion unless an owner turns overage on, up to a ceiling they set. | At the 100,000-email step, Premium is $112 a month ($100.80 billed yearly). Essential at that slider step still shows 50,000 emails at $40 a month. Custom is a quote. |
| 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 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. |
| A retry never sends twice | Idempotency-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. |
| What a refusal tells you | Every 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 marketing editor | The published API sends a message you already wrote. It does not include a drag-and-drop campaign editor. | The pricing comparison marks Advanced Email Editor, email templates and MJML on Free, Starter, Essential, Premium and Custom. |
| Submitting by SMTP | The published API sends with POST /emails. The API reference does not document an SMTP submission hostname. | The pricing comparison marks SMTP relay on every plan, including Free. The email API page says you can send through SMTP relay or the send API. |
| 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. | The Parse API page says inbound parsing is available only on paid plans, Premium 50,000 and above. Creating a route is a POST to /v3/REST/parseroute with a webhook URL, and the response includes an address on parse-in1.mailjet.com. |
| What the model can call | A hosted MCP server with 92 MCP tools (46 listed by default, the rest named by list_more_tools). An agent gets the same budget and kill switch over MCP as over the API. | The install article says the server runs on your computer, is read only, and does not send emails or change settings. It is started locally and configured with an API key. It is not a hosted URL. |
| Audited security reports, and where the data sits | None yet. No SOC 2 report and no penetration-test letter exist, and /security says so. Not offered. Customer data is processed in the United States. | The email API page says GDPR, ISO 27001 and SOC 2 certifications, plus EU-based data centers. The FAQ on that page says GDPR compliant, ISO 27001 and ISO 27701 certified, SOC 2 compliant, and EU-based data centers. |
| 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. | The pricing comparison marks a dedicated IP absent on Free, Starter and Essential. Premium says 1 IP available on request, starting at the 100,000-email plan. Custom says 1 IP, with the option to buy more. |
Sources
- Trying it before paying. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ (captured 2026-10-31).
- Price at 50,000 emails a month. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ (captured 2026-10-31).
- Price at 100,000 emails a month. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ (captured 2026-10-31).
- A spending limit per key. Ours: the published API, /pricing and /security. Theirs: https://dev.mailjet.com/docs/email-api/email-api-overview/authentication and https://www.mailjet.com/pricing/ (captured 2026-10-31).
- A retry never sends twice. Ours: the published API, /pricing and /security. Theirs: https://dev.mailjet.com/docs/email-api/send-api-v31/send-basic-email (captured 2026-10-31).
- What a refusal tells you. Ours: the published API, /pricing and /security. Theirs: https://dev.mailjet.com/docs/email-api/email-api-overview/status-codes (captured 2026-10-31).
- A marketing editor. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ (captured 2026-10-31).
- Submitting by SMTP. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ and https://www.mailjet.com/products/email-api/ (captured 2026-10-31).
- Receiving mail. Ours: the published API, /pricing and /security. Theirs: https://dev.mailjet.com/docs/email-api/parse-api/basic-setup (captured 2026-10-31).
- What the model can call. Ours: the published API, /pricing and /security. Theirs: https://documentation.mailjet.com/hc/en-us/articles/42810091203867-Installing-the-Mailjet-MCP-Server (captured 2026-10-31).
- Audited security reports, and where the data sits. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/products/email-api/ (captured 2026-10-31).
- A dedicated address. Ours: the published API, /pricing and /security. Theirs: https://www.mailjet.com/pricing/ (captured 2026-10-31).