Two transactional email providers, compared on price, features and ratings, so you can pick fast.
Updated November 2026
THE VERDICT
Mailjet wins on developer experience and sending APIs. OneSignal Email wins on deliverability and support.
Mailjet starts at Free versus OneSignal Email's Free. OneSignal Email rates higher with developers (4.7 vs 3.9 on G2). Pick based on volume and team, and the scorecard below breaks down where each one leads.
Winner cells are tinted, green where Mailjet leads, violet where OneSignal Email does.
FAQ
Mailjet starts at Free versus OneSignal Email's Free. Because pricing models differ by tier, the cheaper option depends on your monthly volume, so compare the pricing rows in the scorecard above.
Mailjet's paid plans start at USD 9 per month for the Starter tier, which includes 8,000 emails per month and removes the free plan's daily sending limit. Higher tiers such as Essential and Premium add automation, segmentation, and dedicated IP options, and custom enterprise pricing is available. Pricing scales primarily by email volume.
Yes. OneSignal's Free plan includes 10,000 email sends per month at no cost. This sits alongside its free push notification allowances, so email is bundled into the same free platform tier.
Yes. Many teams route different message types through different providers or fail over between them. Courier lets you send through both behind a single API and switch providers without changing your code.
Why not both?
Use both behind one API.
Route Mailjet, OneSignal Email, or both, and switch providers without changing your code. Courier sits in front of every channel.
Pricing, plans and feature availability as of November 2026 and may change. Ratings are aggregated from public review platforms. Mailjet is a Sinch product.