Brevo Suspended Your Email Campaigns? Reading the Reason and Reactivating Without a Second Strike

Open Settings > Deliverability Center, find the campaign and metric that triggered the suspension, clean the segment Brevo gives you, and verify what's left before you click Reactivate my account. For a campaign suspension, you get one self-service reactivation. Brevo's help centre says that if the account is suspended again, it won't be able to reactivate it, so the cleanup is worth doing properly the first time.

Sources, read 2 November 2026: Brevo's help articles Why have my account or email campaigns been suspended?, Reactivate your email campaigns after a suspension and Clean your contact database after the suspension.

Which suspension you have

Reason shown	How it's lifted
Anomaly detected when signing up	Contact support for checks
Negative results on campaigns, or after sending to new contacts	Clean up, then reactivate yourself in the Deliverability Center (first time)
Negative results on transactional emails	Contact support to assess your transactional mail
Account compromised	Secure the account via the ticket Brevo opens
Terms of Use	Brevo says it won't reactivate; contact support if you think it's an error

The rest of this post is about the second row, which is the one a bad import causes.

What triggers a campaign suspension

Brevo checks campaigns sent in the last 24 hours and any campaign sent to new contacts. For new contacts it tests a random subset first: if positive signals show up within 1 to 3 hours the campaign continues, and if not, the campaign and the account are suspended. The negative results it names include, but aren't limited to:

• a hard bounce rate higher than 2%
• an unsubscribe rate higher than 1%
• a complaint rate higher than 0.2%
• spam traps on the list

2% is a low line. On an imported list that hasn't been mailed in a year, that many dead addresses is common. We compared it with other platforms in bounce rate thresholds by platform.

Step by step

1. Read the reason. Settings > Deliverability Center shows the campaign and the metric, for example a 24-hour hard bounce rate on one newsletter.
2. Open the Maintain your database step and click Yes. Brevo filters your contacts to the new contacts who got the last campaign: the group that produced the bad results.
3. Export that segment and verify it. Upload it on the verify page. Invalid addresses are what pushed the hard bounce rate over 2%.
4. Blocklist rather than delete. Brevo recommends blocklisting so contacts can't be re-imported as subscribed by mistake. Re-import the invalid and unwanted addresses with the option Blocklist the imported Email contacts.
5. Apply Brevo's other filters to the same segment: contacts created or last edited more than 24 months ago, generic addresses such as info@ and sales@ (the role-based email filter pulls these out of a CSV), and anything bought, scraped or guessed from a company format. Brevo's Terms of Use don't allow bought or scraped lists in the first place.
6. Check the setup items on the checklist: an authenticated domain, a recognisable sender name, and an easy unsubscribe.
7. Reactivate, then send the next campaign to your most engaged contacts first, not the newly imported ones.

What verifying the segment won't fix

Verification removes addresses that don't exist. It won't lower the unsubscribe or complaint rate if the people on the list never asked for your mail; if those were the metrics in the Deliverability Center, the fix is permission, not hygiene. It also can't confirm every address: catch-all domains accept anything, and some providers, Microsoft consumer mailboxes in particular, often don't give a clear answer, so a share of results comes back risky or unknown. Leave those out of the first send back. For the longer cleanup routine, see how to clean a Brevo list.

Where SimpleVerifier fits

Verify the flagged segment, or the whole list, on the verify page before you reactivate. The first 100 checks are free with a Google sign-in. Pro is $39 a month with the first 100,000 checks a month at full speed, then slower, never cut off. See pricing.