The various stages an E-mail goes through once it is sent from the sender to receiver.

2. After we press the send
button,
there is a interval of
maximum 30 seconds
(unlimited in case of
internet explorer)

3. What happens during
that time? Ever thought
about that?

4. Let me help you with that

5. My journey begins as
soon as you press
send

6. Then I travel all the way to the
data center to outgoing server
via SMTP (Simple Mail Transfer
Protocol).

7. After that I go through a
series of security checks

8. Then I enter the
networking room
from where it is
sent to the Gmail
server

9. In the data server, I
am processed and I
am then Duplicated
and my backup using
POP3(Post office
Protocol) or
IMAP(Internet
Message Access
Protocol) is created
and I also scanned for
viruses.

10. Then the DNS
server translates
recipient’s
domains into an
IP address.

11. Then I am sent from the SMTP
server to the target domain’s mail
transfer agent from where I am sent
to the receiver via Mail Deliver
Agent.

12. GOOGLE’s EFFICIENCY
All the servers are
shared among
Google products
which enables
Google to
perform more
operations in less
servers and less
energy

13. TO save energy Google uses
conventional sources of energy like wind
energy and solar energy which helps to
consume 50% less energy

14. HOPS IN THE PROCESS
• 1. Your email server: As we are using Gmail, there’s a connection from you to Google.
That’s the first hop, and you can tell if that connection is encrypted. All you have to do is
look in your address bar for that green lock.”
•
• 2. Between Google and Yahoo: When you send an email from gmail, it gets stored in
Google’s servers. Google moves its data from datacenter to datacenter, which means that
your data could be moved outside india temporarily. And when it gets transferred by gmail,
the government gets a copy of that.
• 3. Your recipient’s email server: Then, Google communicates with Yahoo, that’s the
second hop. And that’s the second place your email can be intercepted, if your recipient’s
mail client doesn’t use email encryption. If your recipient’s provider doesn’t support an
encrypted connection, it would be unprotected and readable to anyone who gets a hold of
that message.
• 4. Your recipient’s computer: Once your recipient opens up the email, they can forward it
to whomever they please, creating a chain of vulnerable points

15. FREQUENTLY ASKED QUESTIONS
IMAP(Instant Message Access Protocol) POP(Post Office Protocol)
You can use only one computer to check your email
(no other devices)
You can use multiple computers and devices to check
your email
Your mails are stored on the computer that you use Your mails are stored on the server
Sent mail is stored locally on your PC, not on a mail
server
Sent mail stays on the server so you can see it from any
device.
1.What is the Difference between IMAP and POP
2. Outgoing and Incoming mails are handled by two different types of servers Differentiate between
those.
MTA(Mail Transfer Agent) SMTP(Simple Mail Transfer Protocol)
Used for receiving mail. Used for sending mail.
Spam is not filtered out. Spam is filtered out.
No restrictions on IP address Must have static IP addresses.
ISPs ports are not blocked. ISPs ports are blocked.