Is it possible to send an attachment?

Yes. When you setup an email template you can upload your attachment which is then shared as a link. Including an attachment is optional, however, providing content this way is a great means of reducing post-event follow-up and ensures useful content is distributed to valuable leads immediately.

Within the email editor, perform the following;

1 – Insert a button and give it a meaningful name
2 – While the button is in focus, within properties tab on the right-hand side, select link file
3 – Upload your file
4 – Press Insert

The button is now linked to the file, so as a user clicks on the button the document will open.

Here is an example;