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