User839733648 posted
Hi willydb,
According to your description, as jzero has mentioned, it is suggested to use Uploadify Plugin and MailMessage Class
to achieve your requirement.
Uploadify jQuery plugin allows you to select and upload multiple files.
MailMessage is a common way to choose to complete sending an email.
Here are two links with detailed codes and instructions to achieve your requirement, and maybe you could refer to.
Send Email with multiple Attachments using C# and VB.Net in ASP.Net
Sending Mail With Attachment and Multiple File Upload Using ASP.Net
Best Regards,
Jenifer