email validator
A coding challenge
For instance, you could make sure that there are no spaces, that there is an @ symbol and a dot somewhere after it. Also check the length of the parts at the start, and that the end parts of the address are not blank.
Extensions
1
When an email address is found to be invalid, tell the user exactly what they did wrong with their email address rather than just saying it is invalid
2
Allow the user to choose to give a text file with a list of email addresses and have it process them all automatically.
Last modified: September 17th, 2026
