Does it matter if an email address has capital letters?

Related questions

1. Are Windows case sensitive?
2. What is a Unix username?
3. What is Ldapsearch?
4. Do capital letters matter in Gmail email addresses?
5. Are Windows usernames case sensitive?
6. Is Samaccountname case sensitive?
7. Do upper and lowercase matter in email addresses?
8. Are Snapchat usernames case sensitive?
9. Are Gmail usernames case sensitive?
10. Why is Linux case sensitive?

Tags

1. #username
2. #different
3. #address
4. #domain
5. #doesn
6. #email
7. #matter
8. #however
9. #example
10. #indeed
11. #meaning
12. #sensitive
13. #insensitive
14. #recipient