问题
I've tried conditional merge tags(i.e something like |IF:MY_NUM!=0|), it works as expected when sending emails. But when I try to render a template, given the same global_merge_vars and merge_vars, all the content within the IF merge tag block just remains blank. I got the rendered html code and render it with ExpressJS. Did I lose something?
来源：https://stackoverflow.com/questions/24906337/mandrill-conditional-merge-tags-not-working-when-rendering-template