Using polite language
Writing in ALL CAPS unnecessarily
Respecting privacy
Citing sources
SMTP
POP3
FTP
HTTP
B2B
B2C
C2C
G2G
Cash Register
Digital Payment Gateway
Postal Order
Cheque Book Only
Internet hardware
Rules of polite online behavior
Network topology
Web hosting
UIDAI
Ministry of Electronics and Information Technology (MeitY)
RBI
SEBI
Sending an email
Buying a product from an online store
Creating a blog
Using a search engine
They cannot be compressed
They consume more bandwidth
They may contain malicious programs
They are incompatible with browsers
IMAP
Invalid or non-existent recipient address
Slow Internet connection
Email marked as spam
Large attachment size
Virus
Spam
Malware
Spyware