Transactional Email · for Astro

Transactional Email for Astro

Among 70 makers' products we track that are built with Astro, here's what they chose for transactional email — each counted from a live-product source.

Transactional or marketing. Transactional services send one message the moment your app triggers it (a password reset, a receipt). Marketing/lifecycle tools send sequences and campaigns to lists. Most apps need the first on day one and the second later.

What makers on Astro chose

Counts are live products with a source, not market share; a product using two options counts in both.

ResendTransactional API

llms.txtIn Bolt, Lovable, Replit

Best forA modern developer API with email templates written as React components.

Trade-offA younger service than Postmark or SES, and costlier than SES at very high volume.

37 of the 70 Astro products here · free tier

SendGridTransactional + marketing

llms.txtIn Replit

Best forOne vendor for both jobs at large scale.

Trade-offHeavier than a small team needs.

28 of the 70 Astro products here

PostmarkTransactional API

llms.txt

Best forDeliverability when the mail has to arrive within seconds.

Trade-offStrict about transactional-only sending — marketing email goes through a separate stream — and the free developer plan is small.

18 of the 70 Astro products here · free tier

MailgunTransactional API

In Lovable

Best forHigh volume and inbound email parsing and routing.

Trade-offIts dashboard and API are older and busier than newer services, and the free tier is small.

2 of the 70 Astro products here · free tier

Amazon SESRaw infrastructure

Best forSending at high volume, where cost per email matters more than tooling.

Trade-offBare-bones; you build templates, bounce handling and tooling yourself.

2 of the 70 Astro products here

PlunkOpen-source platform

llms.txt

Best forTransactional emails, event-triggered sequences and newsletters in one open-source tool, billed per email with no monthly fee.

Trade-offA small team and a smaller ecosystem than the established APIs; its old Node SDK is deprecated, so you call the REST API or SMTP.

1 of the 70 Astro products here · free tier · open source