Mailjet Email Verification Integration
Validate email data automatically across Mailjet, so your team works from clean, verified records.
The 1Lookup Mailjet integration verifies email addresses inside Mailjet. As contacts enter Mailjet, 1Lookup checks each address's deliverability and flags disposable and role-based emails, then writes the verdict back so your campaigns send to a clean, low-bounce list instead of risking your sender reputation.
Why validate Mailjet data with 1Lookup
Sending to invalid or risky addresses in Mailjet drives bounces, spam complaints, and a damaged sender reputation. 1Lookup verifies every address (syntax, domain, MX, deliverability, and disposable/role-based detection), so your Mailjet lists stay clean.
Validate addresses as they enter Mailjet and re-verify existing lists in bulk, so you suppress undeliverable contacts, protect your domain reputation, and keep inbox placement high.
What you can do
Email syntax & domain checks
Validate syntax, domain, and MX records for every address before Mailjet sends.
Deliverability verdict
Get a clear deliverable / undeliverable verdict so you can suppress bounces in Mailjet.
Disposable & role-based detection
Flag throwaway and role-based addresses (info@, sales@) entering Mailjet.
Bulk list cleaning
Re-verify the lists already in Mailjet, not just new contacts, to protect sender reputation.
How to connect 1Lookup to Mailjet
Create a 1Lookup account and API key
Sign up for a free 1Lookup account and generate an API key from the dashboard. Free-tier lookups let you test before rolling out.
Store the key securely
Keep the 1Lookup API key in your backend's secrets store (e.g. environment variables), not in client code.
Call the 1Lookup REST API
From your Mailjet workflow, send the email address to validate and read the clean JSON response.
Map and persist
Write the validated fields back into Mailjet for reporting and automation.
Use cases
Lower bounce rates
Verify addresses before Mailjet sends so undeliverable emails are suppressed and your bounce rate stays low.
Protect sender reputation
Catch disposable and role-based addresses early to keep Mailjet campaigns out of spam folders.
Frequently asked questions
What does 1Lookup validate for Mailjet?
1Lookup verifies email addresses for Mailjet: syntax, domain and MX checks, a clear deliverability verdict, and disposable / role-based detection. You choose which fields to store in Mailjet.
Do I need to write code to use 1Lookup with Mailjet?
Yes, this integration calls the 1Lookup REST API, so it suits developer workflows. You authenticate with an API key and map the JSON response into Mailjet.
Can I validate records I already have in Mailjet?
Yes. Alongside real-time validation, you can run existing Mailjet records through 1Lookup batch validation and write the cleaned results back.
How long does setup take?
Setup is quick for most teams. The exact time depends on how many fields you map and whether you validate in real time, in bulk, or both.