What are the two main types of email services?

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Tags

1. #provider
2. #different
3. #types
4. #protocols
5. #webmail
6. #location
7. #choose
8. #online
9. #there
10. #major
11. #email
12. #clients
13. #device
14. #three
15. #providers
16. #service
17. #exchange
18. #access