Connect with a knowledgeable community and get your questions answered on IDNLearn.com. Find the information you need quickly and easily with our reliable and thorough Q&A platform.

Which of the following protocols is commonly used for sending emails from a client to a server?
- SMTP (Simple Mail Transfer Protocol)
- POP3 (Post Office Protocol 3)
- IMAP (Internet Message Access Protocol)
- HTTP (Hypertext Transfer Protocol)