How to attach multiple files from desktop as attachments in send email action

but even so, it is not possible to send all the documents, it will send you a single file, in this case it will send position 0

Or simply append the file paths into a string variable (comma separated) and use that string variable in the Attachment field.

Adding them manually does not work for me, is there a way to attach them dynamically, for example, sometimes there may be 10 files to attach to an email, tomorrow there may be 5 and so on

Yes  I tried with list option only with variables in the file path. Still I am not able to attach all the files inside a single email.

 

Please refer below image of solution for sending multiple attachments in a single email.

 

Variable type to be list and subtype of that file to be file.

@CAMILO ANDRES.O 

You can refer the quoted message for dynamic add of attachments

On adding item to list by default it adds with comma and we cannot change it to semi-colon separated.

Change the package version to lower one where you can pass attachment parameter as semi-colon separated string.