# SendGrid
Canonical: https://automationpulse.dev/zh-Hans/tools/sendgrid

The high-scale email delivery platform (now part of Twilio) for transactional and marketing email at massive volume.

SendGrid (now part of Twilio) is delivery infrastructure at the largest scale, it delivers north of 100 billion emails a month and is trusted by companies like Uber and Spotify for transactional sending. If raw deliverability and volume are the requirement, it's a proven choice.

It also offers a marketing campaigns product with segmentation, A/B testing, and automation, plus an email validation API to clean lists before sending. That said, its developer experience feels dated next to newer entrants like Resend, and it isn't an AI-generation platform.

> **Where it fits:** Pick SendGrid for high-volume delivery infrastructure. Modern dev teams optimizing for DX often prefer Resend; for AI-first content, pair delivery with a generation tool like Brew.