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Resend offers free transactional email service for developers, Twilio for SMS

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Developer platform Resend provides a free tier for transactional emails, including 3,000 monthly sends across three domains. The article recommends Twilio for SMS-based one-time passwords when needed. It advises against using Gmail SMTP for product-related emails. Various alternative services like Brevo, AWS SES, Loops, and Mailtrap are compared for different use cases. The guidance is based on documentation verified in September 2026.

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