How to add an attachment to an email?

It is possible to add attachments to messages using links pointing to the attached document.

What you have to do is:

1. Upload the document you want to attach on your server
2. Integrate in the email a link pointing to it

This mechanism has the advantage of avoiding deliverability challenges involved by attaching a file directly the email.

If you absolutely need to attach files directly to messages, contact your CSM to discuss your use case.