What happens when you exceed the limit
Sending stops until midnight. Sending services enforce their quotas at the API, so the failure is explicit and immediate. The reputation of the domain you send from is a separate matter that the quota does not protect.
How the limit interacts with a warmup ramp
A warmup ramp and a provider cap are two different ceilings. The cap is where Brevo stops you; the ramp is where reputation would stop you first. MailStrike's default ramp climbs to 30 warming emails a day per mailbox over 21 days, and real outreach starts at 20 to 30 a day once the ramp is done. Set the provider, the domain's age and the target volume below to see the schedule.
| Outreach a day, per mailbox | 1 mailbox | 2 mailboxes | 3 or more |
|---|---|---|---|
| Not sending yet | 30 | 21 | 18 |
| 10 emails | 30 | 21 | 18 |
| 20 emails | 25 | 18 | 15 |
| 30 emails | 20 | 14 | 12 |
| 40 emails | 15 | 11 | 9 |
| 50 emails | 10 | 7 | 6 |
The rule behind the table: a mailbox on its own that is not sending yet warms at the plan default of 30 a day, and once outreach starts it drops one warming email for every two you send, down to a floor of 10. Put a second mailbox on the domain and each one needs 70% of that figure, three or more and each needs 60%, because the domain earns the signal across all of them. Volume is a setting per mailbox, so you can dial these in directly.
Trial, free tier and new-account restrictions
300/day. Free and trial tiers exist to test integration, not to run campaigns; the volume above them is a plan decision.
The bulk sender rules are a separate limit
None of the caps above is the line that decides placement. Google's and Yahoo's bulk-sender requirements and Microsoft's 2025 high-volume rules set authentication, spam-rate and unsubscribe conditions that apply well below any sending cap; the sender requirements page has them provider by provider, and the auth checker tests a domain against them.
How Brevo compares
documented cap per day (log scale); basis differs per provider
- Google Workspace sending limits
- Gmail sending limits
- Microsoft 365 sending limits
- Outlook.com sending limits
- Zoho Mail sending limits
- Yahoo Mail sending limits
Questions about Brevo sending limits
What is the Brevo sending limit per day?
Free plan 300 emails/day. Recipients per day: 300 on free. Source: Brevo's own documentation, checked 6 Sep 2026.
What happens when you exceed the Brevo sending limit?
Sending stops until midnight. Above the plan's allowance, sending resumes when the quota or plan allows.
How many recipients per message does Brevo allow?
Brevo does not publish a per-message recipient cap.
How do I increase the Brevo sending limit?
300/day. Volume above that is plan-based: Free plan 300 emails/day.