Email services for SaaS developers: a practical comparison of Resend, Postmark, Loops, and SES

Short summary

A comparison of email services for SaaS developers, covering Resend, Postmark, Loops, Buttondown, and Amazon SES with pricing and use-case breakdowns. Recommends starting with Resend for transactional emails, adding Buttondown for newsletters, and migrating to SES at scale. Includes code examples for integration.

• •Resend is the developer-first choice with a clean API and generous free tier
• •Postmark remains gold standard for transactional reliability; SES is cheapest at scale
• •Recommended stack: Resend for transactional, Buttondown for newsletters, SES for high volume

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