Tianna Y. answered 03/21/19
Experienced Tutor Specialized with K-6
This is quite an interesting debate. It is important to note that usage of the words email and emails don't always match with the grammatically correct usage. Email isn't a countable noun which means it doesn't have a grammatically correct plural conjugation. Instead, it refers to a mass collection of electronic mail and needs a countable noun to refer to more than one email; this commonly becomes a phrase such as "email messages". With that said, it is commonly used to refer to a singular electronic mail as well as a collection of electronic mail. In day to day speech it isn't uncommon to hear someone use "emails". Due to the language evolving, this terminology is growing more acceptable in every day speech. My advice is to avoid using "emails" in writing or to specifically ask your instructor of their preference but it's okay to use in day-to-day conversations.
I hope that answers your question and potentially clears up some confusion. Reach out if you have any further questions!