Hi Guilaume, Sam from the Product Team here - thanks for submitting this request! Unfortunately, we don't have this planned at this time. However, there may be a possible workaround. Have you looked into pulling your data out of Mailjet using a Fivetran webhook? Take a look at this link:

https://dev.mailjet.com/email/guides/webhooks/

In the meantime, we will continue to collect customer demand to justify the commitment to support & maintain a high-quality Fivetran connector. Every upvote on this request increases the case to build it.