Send email in batches with sendgrid

I have integrated the Sendgrid API. I am now trying to send email in batches (ex: 100 emails at the same time, and each email would have dynamic parameters)

It is working well when I put just one email address. However, when I add a list (like the example below) it doesn’t work at all.

Does anyone know why?

Thanks a lot!

Hey there @maxime1,

Are you using a plugin or API connector?

Hi @johnny, I’m using the API connector