Ok so my use case is the end users are uploading drawings images plans into dropzone.
On submit i need to be able to attache these files to emails and send to the relevant stakeholders
the email needs very little user specific detail on it and there is no need for custom entered text
basically just an automated email getting sent with files that were uploaded as attachments
IF you re allowing the public to upload files we recommend using the Uppy example ( flexible file uploader ) and upload files to AWS, its easy, secure and robust.
For the email, that comes down to how ever you want to send emails. We use send grid but there are tons of companies.