③ It can be seen that the essence of HTML email is actually sending an html page. The blank space of the email must be the blank space of the page, so you have to find the html template where you send the email, and then remove the blank space. If this is a public file, you need to pay attention to that you often only use your part, which is still largely the same. There will be a common layout file or the html of the main template that controls all styles, so you have to find it carefully
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①HTML Email
②Email source code
③ It can be seen that the essence of HTML email is actually sending an html page.
The blank space of the email must be the blank space of the page, so you have to find the html template where you send the email, and then remove the blank space. If this is a public file, you need to pay attention to that you often only use your part, which is still largely the same. There will be a common layout file or the html of the main template that controls all styles, so you have to find it carefully