1972
1979
1979
In 1972.
1979
Buses do not have email addresses. Moreover email addresses are for personal use. You cannot use the emails to spam someone.
Nope
As many as you can maintain. Many addresses are useless unless you can use them.
Use of the 'To' field or the 'CC' field will allow all recipients to see the other email addressees. Use of the 'BC' field will ensure that the people receiving the copy do not see each other e-mail addresses.
Email addresses offered by Correo are free to use. There is a maximum amount of emails one can save in their inbox, however additional space can be purchased.
The "@" symbol, also known as the at sign, has a history rooted in commerce and accounting. It was originally used by merchants in accounting to represent "at the rate of" on invoices and ledgers. Its modern use in email addresses and social media can be traced back to the early days of the internet, chosen by Ray Tomlinson in 1971 to separate the user's name from their host computer in email addresses.
baaa
BCC means blind courtesy copy the main recipient will not see the other email addresses.