Both are strong choices. The short answer: pick Substack if you are writers monetizing directly with subscriptions. Pick Brevo if you are small lists that send occasionally.
| Substack | Brevo | |
|---|---|---|
| In one line | Publish a free or paid newsletter with zero setup. | Email, SMS and marketing automation with pay-by-volume pricing, formerly Sendinblue. |
| Pricing | Free; 10% of paid subscriptions | Free 300 emails/day; from $9/mo |
| Free tier | Yes | Yes |
| Best for | Writers monetizing directly with subscriptions | Small lists that send occasionally |
| Category | Email Marketing | Email Marketing |
| Website | substack.com | brevo.com |
Substack details Brevo details
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