Answer:The app Email is used for multiple different reasons, like talking to friends, professors and supervisors, and applying for jobs, and scholarships. Depending on why you want to the app the messages you send will differ in formality, audience, and wanted outcomes. Email is still used on a daily basis.
Answer:
There is nothing wrong with this sentence.
Explanation:
All punctuation and grammar is correct.
Yes it is, it has a period therefore a complete sentence.