C2C
B2B
B2C
C2B
Charles babbage
Mark Zukerberg
Bill Gates
None
Blind carbon copy
Blind carboon copy
Black carbon copy
none
Ray Tomlinson
Steve Jobs
$
#
@
Center
Left
Right
Bottom
5000
1000
256
No limit
Kevin Systrom and Mike Krieger
Marc Zuckerberg
Bill gates
Carbon Copy
Create copy
Cancel copy
Link
Compost
Add
Attachment
Internet members
Instant Messaging
Including media
Mirroring
Caching
Encryption
Resending
Search engine
Browser
Messenger
social media
Trash Mail
Sent Mail
Inbox
Outbox
Google
Microsoft
Facebook
Twitter
60 Sec.
30 Sec.
5 Min.
2 Min.
12
13
14
18
255
250
Bank mail
Bounced mail
Return mail
Spam
Electronic Messaging
Internal messaging
Instant messaging
None of these