One of Mailjet’s strengths is the ability to detect if an email would be marked as SPAM and has no chance of reaching the recipient’s inbox. In this case, your email will not be sent and it will have a status of preblocked.
To check if your email has been spam preblocked, go to your Stats page, and hover your mouse over the ‘?’ for the blocked email:
Or you can click on the subject of the blocked email and the details column will show the reason of the block. If you see “preblocked”, it means our anti-spam system blocked your email from being sent based on its content.
Check out our blog article Words That Will Trip The Spam Alarm for more information.
What to do if your email is preblocked?
If your emails are getting preblocked, please open a ticket with our Support Team.

Or you can click on the subject of the blocked email and the details column will show the reason of the block. If you see “preblocked”, it means our anti-spam system blocked your email from being sent based on its content.

Check out our blog article Words That Will Trip The Spam Alarm for more information.
What to do if your email is preblocked?
If your emails are getting preblocked, please open a ticket with our Support Team.