How to configure requisition proposal email

I try to configure mailing and printing for purchase requisition template for requesting proposal to vendor. But It’s always use default system sending email template. when click request proposal, it also send to other two email that is not the vendor email. This is image when it sent

 

Now I know why It sent with including two emails more, it comes from vendor class mailing and printing. But I still cannot make email template working yet. Please help me

The Report Designer has a built in email template. Previously, I have found that if you print then initiate the email from the print screen, the report designer email setup will be sent rather than the appropriate email template. You can add the email template to the report in report designer. You need to add the report name manually to this field or update the email setup directly in Report Designer. 

Hi ​@vannakheng 

The "Mail & Printing" tab on Purchase Requisition Preferences is used only as a template in this case — the actual value is taken from the "Mailing & Printing" tab on the Vendor record, which gives you the flexibility to override preferences on the Vendor if needed.

That said, you have two options: change the email template on every Vendor, or update the default template already selected on their records to fit your needs.