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SendGrid

Email infrastructure

Twilio SendGrid provides high-volume sending APIs, SMTP relay, and marketing campaigns for established stacks.

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Overview

Twilio SendGrid provides high-volume sending APIs, SMTP relay, and marketing campaigns for established stacks. Official documentation and pricing live on sendgrid.com.

Strengths

  • Volume sending
  • SMTP + API
  • Established docs

Best for

Teams that need battle-tested infrastructure at volume