SendGrid vs Substack — Which One Wins?
A detailed, side-by-side comparison of SendGrid and Substack to help you pick the right tool for your workflow.
Quick Verdict
Substack takes the lead with a 4.2 rating and is best for writers who want the simplest path to publishing a newsletter with paid subscriptions.. SendGrid (4.0) is the better pick if you need applications and enterprises needing reliable, high-volume email delivery at scale..
Side-by-Side Comparison
| Criteria | SendGrid | Substack |
|---|---|---|
| Rating | ★★★★ 4.0(312) | ★★★★ 4.2(312) |
| Pricing Model | freemium | free |
| Starter Price | $19.95/mo (Essentials, 50K emails) | N/A |
| Free Tier | Yes | Yes |
| Platforms | web | web, ios, android |
| Learning Curve | medium | easy |
| API Available | Yes | No |
| Best For | Applications and enterprises needing reliable, high-volume email delivery at scale. | Writers who want the simplest path to publishing a newsletter with paid subscriptions. |
| Verdict | situational | situational |
Feature Checklist
| Feature | SendGrid | Substack |
|---|---|---|
| Transactional email API | — | |
| Marketing campaigns | — | |
| Email validation | — | |
| Dedicated IP addresses | — | |
| Inbound email parsing | — | |
| Advanced analytics | — | |
| Clean writing editor | — | |
| Paid subscriptions built in | — | |
| Web archive for every post | — | |
| Podcast hosting | — | |
| Substack Notes (social) | — | |
| Network discovery | — |
SendGrid
Pros
- ✓Battle-tested infrastructure for high-volume email delivery
- ✓Combined transactional and marketing email in one platform
- ✓Strong deliverability with dedicated IP options
Cons
- ✕Developer experience feels dated compared to Resend
- ✕Pricing complexity with multiple plans and add-ons
- ✕Twilio acquisition has not improved the product significantly
Substack
Pros
- ✓Zero monthly cost — only pay when you earn
- ✓Simplest writing and publishing experience available
- ✓Built-in paid subscriptions with no setup
Cons
- ✕10% revenue cut is expensive at scale
- ✕Virtually no email marketing or automation features
- ✕Zero customization — every Substack looks the same
The Bottom Line
Both SendGrid and Substack are solid tools in the Email Marketing space. Substack edges ahead with a stronger overall rating (4.2 vs 4.0) and is the better choice for writers who want the simplest path to publishing a newsletter with paid subscriptions.. However, if you prioritize applications and enterprises needing reliable, high-volume email delivery at scale., SendGrid is worth serious consideration. We recommend trying the free tier or trial of each before committing.