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Compare: Brevo (formerly Sendinblue) vs ConvertKit (now Kit)
A side-by-side analysis to help you find the right tool.
Brevo (formerly Sendinblue)
Freemium
(Under $50/mo)
Free tier (300 emails/day, unlimited contacts)
View Details
ConvertKit (now Kit)
Freemium
(Under $50/mo)
Free tier (up to 10,000 subscribers with limited features)
View Details
Key Differences
Free Trial
Brevo (formerly Sendinblue)
Free tier (300 emails/day, unlimited contacts)
ConvertKit (now Kit)
Free tier (up to 10,000 subscribers with limited features)
Company Size Fit
Brevo (formerly Sendinblue)
Solo / Freelancer, Small Team (2–20), Mid-Market (20–200)
ConvertKit (now Kit)
Solo / Freelancer, Small Team (2–20)
Business Type Fit
Brevo (formerly Sendinblue)
B2B, B2C, D2C / E-commerce
ConvertKit (now Kit)
B2B, B2C
Best For
Brevo (formerly Sendinblue)
Budget-conscious businesses wanting email + SMS + basic CRM combined
ConvertKit (now Kit)
Creators, bloggers, and solopreneurs building audience-based businesses
Pros
Brevo (formerly Sendinblue)
Genuinely usable free tier
pricing based on email VOLUME not contacts (huge cost advantage for large but low-frequency lists)
multi-channel (email + SMS + WhatsApp) at a low price
transactional email included
ConvertKit (now Kit)
Built specifically for creators (not retrofitted from an SMB tool)
generous free tier (10K subscribers!)
excellent tagging/segmentation for its price
supports paid newsletters and digital product sales natively
creator network for cross-promotion
Cons
Brevo (formerly Sendinblue)
Automation builder is less sophisticated than ActiveCampaign
deliverability reputation has been mixed historically
UX isn't as polished as Mailchimp
e-commerce features are weaker than Klaviyo
ConvertKit (now Kit)
Email design is deliberately minimal (plain-text-style by philosophy)
not suited for e-commerce product emails with heavy visual merchandising
reporting/analytics are basic
no SMS
What They Share
