Protocols- SMTP,POP, IMAP

Good Morning boys

Hope you are feeling comfortable with the Python you have learnt so far. You will get time till Monday to review the topics done so far. Ensure to mark the areas where you have doubts so that we can take those up again.
Inform me so that I can prepare my lessons accordingly.

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The Google Meet ID for today's Class is:

Meeting ID

meet.google.com/kbh-pirj-bok

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By the end of this session , you will be able to

• understand the working of SMTP
• identify the problems with SMTP
• understand the working of POP3
• Understand the working of IMAP
• understand the advantages of IMAP over SMTP

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Let us continue our discussion about the e-mail Protocols.

SIMPLE MAIL TRANSFER PROTOCOL (SMTP)

• Is an internet standard for electronic mail (e-mail) transmission across IP networks.
• used to send  mail messages by 
• electronic mail servers and
• other mail transfer agents
• SMTP is only a delivery protocol
• Cannot retrieve messages from a remote server on demand
• No facility for authentication of senders

POST OFFICE PROTOCOL (POP3)

• Is a standard mail protocol used to receive e-mails from a remote server to a local email client.
• Pros
• allows user to download email messages on the local computer
• this allows the user to read the messages even when offline.
• your messages are stored on the local computer.
• thus reduces the space your email account uses on your web server.
• Cons
• when messages are downloaded locally, they are automatically removed from the email server.
• Once downloaded changes can only be made on your home computer.
• As the email is removed from the server so it does not allow users to connect from a variety of machines and devices.
• It may not be the best option for the user.

INTERNET MESSAGE ACCESS PROTOCOL (IMAP)

• Is a mail protocol used to access / receive email from a remote web server to a local client.
• allows you to sync folders between multiple devices so that you can see the same folder and messages from anywhere.
• allows simultaneous access by multiple clients.i.e.  
• You can access your email from
• different locations
• different devices

NOTE-

• Both POP3 and IMAP are supported by all modern
• clients 
• web servers

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