SendGrid
Email delivery service with APIs for transactional and marketing emails.
Best for developers who need a battle-tested email API with template management and analytics.
Use Cases
Free Tier
100 emails/day, 2K contacts, email APIs, analytics
How to Maximize the Free Tier
SendGrid's free tier (100 emails/day) matches Resend's but with older infrastructure. Use it if you already have SendGrid integration in your codebase. The template editor is useful for marketing teams who want drag-and-drop email design. The 2K contact storage limit makes it unsuitable for newsletter growth — upgrade to a paid plan or switch to a dedicated email marketing platform once your list grows.
Getting Started
Sign up → create sender identity → install SDK (`npm install @sendgrid/mail`) → create API key → set template in dashboard → send via API: `sgMail.send({...})` → track in analytics.
Pros
- Scale proven: Powers billions of emails daily — battle-tested infrastructure with enterprise reliability
- Template editor: Built-in drag-and-drop email template editor with A/B testing capabilities for marketing campaigns
- SDK coverage: SDKs for almost every programming language — from Node and Python to Go and PHP
Cons
- Daily limit: 100 emails/day — same as Resend's free tier, but no advantage for a more established platform
- Reputation management: Shared IP pool can lead to deliverability issues if other senders on your IP have poor reputation
- API age: The API and SDK design feels dated compared to newer players like Resend — more boilerplate code