Hi Mateusz,

The To field in MS 365 Email is different from that of Gmail, and an array of emails will not work for it.

You need to pass an array of objects, each object containing an Email Address and optionally, a Name:

If you need to input a list, you can use an iterator+aggregator combo to modify its format to fit what the module expects:

We have also an article for this https://www.celopeers.com/s/article/How-to-send-email-using-Microsoft-365-Email-to-multiple-recipients, but I think the 2 first screenshots aren't showing correctly, in the article and I have attached them here.

We hope this helps with your request.

Please let us know if you need further assistance from our side.

Best regards,

Lejla