Substack vs Sendinblue: Side-by-Side Comparison (2025)

Choosing between Substack and Sendinblue comes down to your specific use case. Both are legitimate email marketing platforms, but they serve different audiences. Substack is built for writers monetising directly from subscribers, while Sendinblue targets transactional email and SMS campaigns. This comparison covers the key differences so you can decide quickly.

Quick Verdict

Overall winner
Sendinblue
Better pricing
Substack
More features
Substack
For beginners
Substack
E-commerce
Substack

Feature Comparison

FeatureSubstackSendinblue
Starting price$0/mo$25/mo
Free planYesYes
Best forWriters Monetising Directly From SubscribersTransactional Email And Sms Campaigns
Free subscriber limit-1100000
G2 rating4.04.5

Which Should You Choose?

Choose Substack if...

  • You are primarily focused on writers monetising directly from subscribers
  • You value paid subscriptions
  • You prefer revenue-share pricing

Choose Sendinblue if...

  • You are primarily focused on transactional email and SMS campaigns
  • You value 300 free emails/day
  • You prefer freemium pricing
Try Sendinblue โ†’

Frequently Asked Questions

Is Substack better than Sendinblue?

It depends on your use case. Substack wins for writers monetising directly from subscribers, while Sendinblue is stronger for transactional email and SMS campaigns. Neither is objectively better โ€” the right choice depends on your specific needs.

Which is cheaper, Substack or Sendinblue?

Substack starts at a lower price point ($0/mo vs $25/mo). However, pricing scales with subscriber count, so the total cost depends on your list size.

Can I switch from Sendinblue to Substack?

Yes, switching from Sendinblue to Substack is possible. Most platforms support CSV import/export for subscriber lists. Plan for some time to recreate automations and templates, as these rarely transfer directly between platforms.