Contact Page Form (multiple) File Attachment

[aliciamx]

Hi everyone,

I would like to implement a (multiple) file attachment in our contact page form.

I was able to add a matching bootstrap snippet to the main-contact.liquid file to appear and have a document selected. 

<div class="mb-3">
         <input class="form-control" type="file" id="formFileMultiple" multiple>
        </div>

However it will not attach the file when the message is sent.

I am missing the matching JS snippet (I believe), that I can add to the theme.js file, so the file will be also attached in the message.

Happy if someone can help!
Best,