What is the role of POP and IMAP?

Related questions

1. What does a relay server do?
2. What is SMTP protocol and how it works?
3. Why pop3 is used?
4. What is SMTP relay service?
5. What does TCP do?
6. Why is SMTP used?
7. What is the function of POP protocol?
8. What is an email API?
9. What is difference between POP and IMAP?
10. What is the function of Simple Mail Transfer Protocol?

Tags

1. #protocols
2. #locally
3. #words
4. #temporarily
5. #permanent
6. #essentially
7. #leaves
8. #while
9. #difference
10. #caches
11. #local
12. #stores
13. #storage
14. #server
15. #downloads
16. #cloud
17. #protocol
18. #emails
19. #original
20. #other