What's the plural form of junk mail? Here's the word you're looking for.
Answer
The noun junk mail can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be junk mail.
However, in more specific contexts, the plural form can also be junk mails e.g. in reference to various types of junk mails
or a collection of junk mails.
