Email is one of the essential tools for communication especially in professional environments. Behind every email sent or received are specific server settings that make the process possible. 3 most common terms seen in email setup are IMAP, POP3, and SMTP. There 3 are protocols, basically rules that govern transmission of emails. They define how messages are sent, received and stored.
IMAP – Internet Message Access Protocol
IMAP allows you to access your emails directly from the mail server. Instead of downloading emails to a single device, IMAP keeps them stored on the server and syncs them across all your devices.
Advantages of IMAP
- Actions are synchronized across all devices
- Emails are accessible from multiple devices.
- Emails are backed up on the server, if your device crashes your emails are still there.
POP3 – Post Office Protocol
POP3 downloads emails from the server to your local devices and typically deletes them from the server.
Advantages of POP3
- Emails are stored on your local device, you can access them without internet connection
- Preserves server space
SMTP – Simple Mail Transfer Protocol
SMTP is the protocol responsible for sending emails. It handles outgoing mail and ensures messages are delivered to the recipient’s mail server. When an email is sent, SMTP transfers it from your email client to the recipient’s server. From there, IMAP or POP3 handles how the recipient retrieves it. Understanding these protocols, how they work helps you to correctly set up email accounts, troubleshoot issues and choose the best option for your needs(personal or professional)
In a Nutshell
IMAP and POP3 allows you to receive email messages whilst SMTP allows you to send email messages.
Choosing the right Email Protocol between POP3 and IMAP
Choose IMAP if you want flexibility, syncing, and access from multiple devices.
Choose POP3 if you prefer storing emails locally and using one device.
SMTP is always required for sending emails, regardless of which receiving protocol you use.
