Internet, Browsers & E-mail
🔒 Log in to trackE-mail: structure, To/CC/BCC and protocols
🔒 Log in to trackE-mail (electronic mail) exchanges messages between accounts on mail servers. An address = username@domain - the @ separates user from domain (ray.kiran@gmail.com).
Fields: To - primary recipients; CC (Carbon Copy) - secondary recipients visible to all; BCC (Blind Carbon Copy) - hidden recipients: the To/CC people cannot see who was BCC'd (use BCC for mass mails to protect privacy). Others: Subject, body, attachment (paperclip; files sent along, size-limited), signature, priority.
Folders/actions: Compose, Send, Reply (to sender), Reply All (sender + everyone on To/CC), Forward (pass on), Inbox (received), Outbox (pending), Sent, Drafts (unfinished), Spam/Junk (filtered mail), Trash/Bin. MIME (Multipurpose Internet Mail Extensions) is the standard that lets e-mail carry attachments, images and non-English text.
Protocols: SMTP (Simple Mail Transfer Protocol, port 25) - SENDS mail between clients and servers. POP3 (Post Office Protocol v3, port 110) - downloads mail to one device, usually removing it from the server. IMAP (Internet Message Access Protocol, port 143) - mail stays on the server and syncs across many devices. Webmail (Gmail in a browser) vs mail clients (Outlook, Thunderbird). Filters/labels sort automatically; autoresponders reply when you are away.
Detailed notes
What e-mail is
E-mail (electronic mail) sends messages between accounts stored on mail servers. An address has two parts joined by @ ("at"): rani.sharma@gmail.com — username @ domain. The domain here belongs to Gmail (Google's mail service); Outlook and Yahoo Mail are others. @ is the separator — a favourite full-form/identification question.
The fields of a compose window
| Field | Meaning |
|---|---|
| To | the main receivers |
| CC (Carbon Copy) | extra receivers — everyone can see all To and CC addresses |
| BCC (Blind Carbon Copy) | hidden receivers — To and CC people cannot see the BCC list; each BCC receiver also can't see the others |
| Subject | one-line summary of the mail |
| Attachment | files clipped to the mail (paperclip icon) |
| Signature | sender's fixed sign-off block |
The CC/BCC rule: CC is a visible copy; BCC is a blind copy. When a mail was sent with addresses in BCC, Reply All reaches only the sender — the hidden list stays hidden.
The three protocols
| Protocol | Direction | How it works |
|---|---|---|
| SMTP (Simple Mail Transfer Protocol) | sending (and passing between servers) | pushes your mail out |
| POP3 (Post Office Protocol v3) | receiving | downloads mail to ONE device, usually deleting it from the server |
| IMAP (Internet Message Access Protocol) | receiving | mail stays on the server, synced across all your devices |
Memory hook: SMTP Sends, POP Picks (down), IMAP In-sync. If the question says "protocol used to SEND e-mail" — SMTP, every time.
Everyday mail actions
- Reply answers only the sender; Reply All answers the sender and everyone in To/CC; Forward sends a received mail to new people.
- Spam = junk or unsolicited mail; the filter parks it in the Spam folder — never click its links.
- Draft = a mail written but not sent; it waits until you finish it.
- Cc etiquette: use CC to keep someone informed; use BCC for bulk mails so receivers' addresses stay private.
The journey of one e-mail
- Rani writes a mail and presses Send. Her mail server uses SMTP to push it across the Internet to the server named after the @domain.
- The receiver's server holds the mail in her mailbox.
- When the receiver opens her app, IMAP (or POP3) fetches or syncs it to her device. So one mail may touch three protocols: SMTP out, IMAP in, and the two servers talking to each other by SMTP. Exams compress this story into one line — "SMTP is used to send" — but the full journey is worth one drawing in your rough notes.
Quick revision
- Address = username @ domain; @ separates the two.
- CC visible to all; BCC hidden from To and CC receivers.
- SMTP sends; POP3 downloads to one device; IMAP syncs everywhere.
- Reply = sender; Reply All = everyone in To/CC; Forward = new receivers.
- Spam = junk mail; Draft = unsent mail.
Types of questions asked
Every way this subtopic shows up in exams — how to recognise it, the formula or logic to use, and a solved example.
Type 1: CC/BCC visibility scenariovery common3 practice Q
A mail-sending scenario asks who can see whom: 'addresses in BCC are visible to ___', or the field to use so receivers don't see each other.
- CC receivers are visible to everyone (To and CC).
- BCC receivers are hidden — To/CC people never see them; BCC people see To/CC but not each other.
- Bulk mails to strangers go in BCC to protect addresses.
Example: Ravi sends a mail to 200 customers with all addresses in BCC. If a customer presses Reply All, the reply goes to:
Only the sender — the BCC list is hidden and other receivers are not disclosed.
Type 2: Protocol direction: SMTP vs POP3 vs IMAPvery common4 practice Q
'Protocol used to SEND e-mail', 'which protocol downloads mail to one device', 'which protocol keeps mail synced on the server' — direction matching.
- SMTP = sending (Simple Mail Transfer Protocol).
- POP3 = receiving, downloads to one device (usually removes from server).
- IMAP = receiving, stays on server, syncs everywhere.
- Reversed pairs (SMTP as receiver, POP as sender) are the standard traps.
Example: Which protocol is used to SEND an e-mail from the client to the mail server?
SMTP — Simple Mail Transfer Protocol. POP3 and IMAP only fetch incoming mail.
Type 3: E-mail address and fields anatomycommon3 practice Q
'In rani@gmail.com, the part before @ is', 'what separates user and domain', or identification of Subject/Attachment/Signature fields.
- Address = username @ domain; @ is the separator ('at').
- Subject = one-line summary; attachment = clipped file (paperclip); signature = fixed sign-off.
- The domain after @ names the mail service (gmail.com).
Example: In the address kiran.verma@yahoo.in, the username is:
kiran.verma — the @ separates the username from the domain (yahoo.in).
Type 4: Reply, Reply All, Forward, Spam, Draftcommon3 practice Q
A scenario on which action answers whom, or the meaning of spam / draft / forwarding.
- Reply = only to the sender; Reply All = sender plus everyone in To/CC; Forward = passes the mail to new receivers.
- Spam = junk mail, parked in the Spam folder by the filter.
- Draft = written but not sent yet.
Example: Swati received a circular sent to her whole class. She wants only the teacher to read her answer. She should use —
Reply (to the sender) — Reply All would reach every classmate who was on To/CC.
Shortcut tricks
⚡ CC vs BCC
CC = Carbon Copy - Everyone sees. BCC = Blind - eyes covered, so To/CC recipients cannot see the blind list. 'Who was secretly copied?' - nobody but the sender knows.
Example: A receiver of the mail can see the addresses in which field(s)?
To and CC - never BCC.
⚡ SMTP Sends, POP Picks, IMAP In-sync
SMTP = Send (outgoing). POP3 = Pick up on one device (downloads, server emptied). IMAP = In All devices (server copy stays, everything syncs).
Example: Which protocol lets you read the same mail on phone and laptop?
IMAP.
⚡ @ = at
In ray@gmail.com the @ separates 'who' from 'where' - user at domain. Options without @, or with a space/comma, are dead giveaways.
Example: Which character separates the username from the domain in e-mail?
@ (at the rate).
Where students lose marks
Saying CC recipients are hidden - that is BCC; CC is fully visible.
Making SMTP the receiving protocol - SMTP only sends; POP3/IMAP receive.
Using Reply All when a mass mail was BCC'd - your reply reaches the sender, not the hidden list (and Reply-All storms are bad netiquette).
Practice sets — 16 questions
Sets of 10, mixed across the question types above. Each answer comes with a step-by-step explanation.
Topic test · 10 questions
Suggested time 5 min · wrong answers go to your mistake notebook automatically.