Other files can not be attached. We recommend you use a link to a file you upload to your web site.
===HTML and Templates===
If you use HTML you will need to make sure your code is correct and clean otherwise it might trigger our firewall.
HTML messages created by third party services is often convoluted and might contain critical content. Some tools like https://stripo.email/ or https://www.designedwithbee.com/ that allow you to create your own templates and also provide many templates have tested to work well in Beds24.
=== SMS ===