They’re issued by schools from elementary all the way through graduate school.
Why Consider a .edu Email Address?
Why should someone use a .edu address over a single, personal address?

There are a couple of reasons you might want to.
Students are also likely to use this account to turn in assignments.
Discounts
A valid .edu email address unlocks educational discounts on various products and services.
For staff, the account will be accessible for as long as you’re with the institution.
If you might’t find it there, consider giving the alumni relations office a quick call.
The process may be as simple as submitting a form request to the school’s IT department.
You might be required to verify you were a student of the school by answering some basic questions.
Common ones would be graduation year, student ID number, or Social Security number.
It’s likely you’ll also be asked for an alternate email address for account recovery.
However, there are a couple of caveats you may want to keep in mind: