Mailjet Send-Volume Billing & Actual Monthly Cost: 2026 Guide

Mailjet meters how many emails you send each month, rather than your contact count. The free plan sends 6,000 emails a month, capped at 200 a day, on 1,000 contacts. Paid plans open at $9 for Starter, $17 for Essential, and $27 for Premium at their entry volume bands, with a quote-only Custom tier for high volume above. Those prices are the lowest volume bands, and picking a higher send volume raises the plan price, at rates Mailjet does not fully publish. Annual billing takes 10 percent off. So your monthly send volume, not the size of your stored list, is what sets the bill.

It is genuinely useful, especially for developers. Mailjet's free plan sends 6,000 emails a month on 1,000 contacts, and crucially it includes the APIs, SMTP relay, and webhooks, which many rivals reserve for paid tiers. That makes it a real way for a small product to wire up transactional email at no cost. The main limit is the 200-a-day cap: 6,000 a month is generous, but a large campaign or a busy transactional day can hit the daily ceiling. When that starts to constrain you, Starter at $9 lifts the daily limit and adds contacts. For light or early-stage sending, though, the free plan holds up well.

Almost always because your send volume rose. Mailjet prices by emails sent, so the $9, $17, and $27 rates are only the entry volume bands. Pushing the monthly volume higher lifts the plan price, sometimes at rates that are not published on the grid. A dedicated IP, if you bought one, requires the 100K Premium band, which is a large jump. Buying extra email validations past your quota, or loading a prepaid balance, can add to it too. The way to keep it predictable is to size your volume band to your real monthly sending, rather than a bigger one bought for headroom you do not use.

Several sit outside the entry price. First, send-volume scaling: the plan rates climb as your monthly volume grows, at figures Mailjet does not publish above the entry bands. Second, the dedicated IP, gated to the 100K Premium band, so needing one forces a big tier jump and carries an unpublished fee. Third, the email validation quota, capped at 500 a month on lower plans, so heavy list cleaning means buying more. Fourth, a $50 minimum deposit if you pay by wire transfer. None of these appears in the $9 headline, and together they shape the real cost for a scaling or enterprise sender more than the sticker does.

Only at high volume. A dedicated sending IP is available on the Premium plan, but only once you reach the 100,000-emails-a-month band or above, not on the lower Premium tiers or the cheaper plans. So a team sending, say, 20,000 a month cannot simply add an IP. Getting one means jumping to a far larger plan than its volume needs, and the IP itself is an unpublished cost on top. A dedicated IP mainly helps deliverability and reputation at high sending volume, so for most small and mid-size senders it is neither available nor necessary. If you genuinely need one, factor in the tier jump it forces.

By sends. This is Mailjet's defining pricing choice: the plans meter how many emails you send each month rather than how many contacts you store. So you can keep a large list and pay only for the volume you actually send. That suits a product or store that stores many contacts but mails them infrequently or in bursts. The trade-off is that a business emailing a smaller list very often can pay more than it would on a contact-based plan, since every send counts. If your sending is high relative to your list size, a contact-priced rival may work out cheaper. If you store more than you send, Mailjet's model favors you.

Start by sizing the volume band to your real monthly sending, since overbuying volume for headroom is the most common way to overpay. Take annual billing once your volume has settled, for a flat 10 percent off the band price. Avoid jumping to a much larger plan just to get a dedicated IP unless your volume genuinely needs one, since the IP gates at 100K a month. If you send at high volume, negotiate the quote-only Custom tier rather than accepting its first figure, ideally with a Brevo or Sender volume rate in hand. There is no student or nonprofit coupon, so those levers are the realistic route down.

Yes, this is where it shines. Mailjet is built API-first, with SMTP relay, webhooks, and a solid transactional email API included even on the free plan, so a product team can integrate sending quickly and cheaply. The send-volume pricing also suits transactional workloads, where you store many users but email them per event rather than in bulk. The developer-friendly free tier, at 6,000 emails a month, is a genuine starting point for wiring up notifications and receipts. The limits to watch are the 200-a-day free cap and the higher-volume rates that are not published, but for building and scaling transactional email, Mailjet is a capable, flexible choice.