While changing content of email in smtp method. I would like to give html file as value for body property. What will be the syntax to insert file there?

hey @yvstrishul i think you can just give the html string as the body

My html is a bit lengthy, so I would like to insert file if possible

that won't be possible. You could always just read from the file in that function.

+1 this is what i did, read html file and insert into body. afaik this is standard as attaching a html file won't dispaly properly in email readers