Mailjet Email Verification - Protect Your Sender Score

Mailjet's Bounce Threshold
Will Pause Your Account.

Mailjet enforces hard bounce limits and can suspend accounts that exceed them. Invalid contacts in your list generate bounces on every send - damaging your sender score with Mailjet and with inbox providers. BounceZero removes them first - $3 per 1,000 verifications.

Start Free - 100 Credits See Pricing

Works with all Mailjet plans $3/1,000 verifications Both EU companies - full GDPR alignment

Backed by & listed on

Listed

AWS

Activate

Google

for Startups

NVIDIA

Inception

MongoDB

Atlas

Datadog

Startup Program

UK Ltd Co.

No. 17153835

Listed

AWS

Activate

Google

for Startups

NVIDIA

Inception

MongoDB

Atlas

Datadog

Startup Program

UK Ltd Co.

No. 17153835

How to Verify Your Mailjet List

Export from Mailjet

Contacts > Contact Lists > select list > Export. Download the CSV.

Upload to BounceZero

Create a free account and upload your CSV in Bulk Verification. BounceZero auto-detects the email column.

Run 5-stage verification

Syntax, DNS/MX, live SMTP mailbox, provider intelligence, and ML scoring. 65+ signals per address.

Download clean results

Filter to Deliverable. Invalid, Disposable, and Role addresses are flagged separately.

Reimport and exclude invalids

Reimport your clean list to Mailjet. Add invalid addresses to Mailjet's exclusion list (Contact Lists > Exclusion List) to permanently block them from future sends.

New to verification? Start with the complete email verification guide.

Frequently Asked Questions

Why verify my Mailjet list?

Mailjet suspends accounts exceeding hard bounce thresholds and tracks sender reputation per account. BounceZero removes invalids before they generate bounces that risk your account.

How do I export a Mailjet contact list?

Contacts > Contact Lists > select list > Export. Download the CSV and upload to BounceZero.

Does BounceZero connect to Mailjet?

Via Zapier or REST API - verify new subscribers on form submit or batch-verify existing lists via CSV before campaigns.

Are both Mailjet and BounceZero GDPR compliant?

Yes - Mailjet is EU-hosted and BounceZero is UK-hosted with ICO registration ZC132839 and CSA STAR certification. Infrastructure and subprocessors are documented in our Privacy Policy and DPA, with safeguards for international transfers.

Keep Your Mailjet Account in Good Standing.

100 free verifications. $3/1K after that. Both EU companies - full GDPR alignment.

Start Free How Bulk Works

Verify lists from your ESP or platform

Works with every major email platform - export, verify, reimport

SendGrid verification

Protect SendGrid reputation - avoid suspension

ConvertKit (Kit) verification

Remove invalid subscribers before every broadcast

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Verify your Constant Contact email list before every campaign

Campaign Monitor verification

Protect your Campaign Monitor account health

WooCommerce verification

Clean customer emails from your WooCommerce store

Drip verification

Protect Drip automations from invalid subscriber bounces

Continue through related topics

Integration guides API documentation Bulk email validation

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Mailjet's Bounce Threshold Will Pause Your Account.