SendGrid vs Substack: Full Comparison (2026)
Pricing, features, scores, and a clear verdict on which one is right for you.
The bottom line
SendGrid positions itself as "email delivery api and marketing platform" while Substack goes after "start a newsletter. build your community." — so the right pick depends on which problem you're actually solving. They take different commercial approaches — SendGrid uses a freemium approach and Substack a free-based model, which affects how costs scale as your team grows. SendGrid (founded 2009) has had more time to build out its ecosystem and integrations, while Substack (2017) tends to move faster on modern UX and newer workflows.
At a glance
| SendGrid | Substack | |
|---|---|---|
| Our score | 81/100 | 66/100 |
| Starting price | $20/mo | Free |
| Free tier | Yes | Yes |
| Best for | Email delivery API and marketing platform | Start a newsletter. Build your community. |
Pricing comparison
Calculate your cost
Feature comparison
core
| Feature | SendGrid | Substack |
|---|---|---|
| Email API | Yes | No |
| SMTP relay | Yes | No |
| Webhooks | Yes | No |
| Templates | Yes | No |
| Analytics | Yes | No |
| Email builder | No | Basic |
| Automation | No | Rolling out |
| A/B testing | No | No |
| Landing pages | No | Yes |
| Signup forms | No | Yes |
advanced
| Feature | SendGrid | Substack |
|---|---|---|
| Dedicated IP | Pro+ | No |
| IP warmup | Yes | No |
| Bounce management | Yes | No |
| Unsubscribe handling | Yes | No |
| Marketing Campaigns | Add-on | No |
| SMS marketing | No | No |
| Social posting | No | Yes |
| CRM | No | No |
| Predictive analytics | No | No |
| Video/podcast hosting | No | Yes |
| Livestreaming | No | Yes |
| TV app | No | Yes |
| Recording studio | No | Yes |
| Notes scheduling | No | Yes |
Ratings breakdown
What the data tells us
Key capabilities you'd miss
Choosing SendGrid means going without Email builder, Automation, Landing pages (which Substack offers). Choosing Substack means losing Email API, SMTP relay, Webhooks. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.
What company size tells you
Substack (51-200 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. SendGrid (1,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.
Plan flexibility
SendGrid offers 3 tiers, giving you finer control over what you pay for at each growth stage. Substack's 1-tier structure is simpler to evaluate but may force you into a higher plan sooner for features you need.
Choose SendGrid if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- You need enterprise-grade capabilities
Choose Substack if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- You need enterprise-grade capabilities
Frequently asked questions
Is SendGrid or Substack better?
SendGrid scores 81/100 compared to Substack's 66/100 on VendorVS. However, the best choice depends on your needs — SendGrid excels at ease of use (8/10) while Substack scores 10/10.
How much does SendGrid cost compared to Substack?
SendGrid starts at $20/mo (free tier available). Substack starts at free (free tier available). Substack is the more affordable option.
Does SendGrid or Substack have a free plan?
Yes, both SendGrid and Substack offer free tiers, so you can try each before committing to a paid plan.
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