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the email may not be transmitted without that information (apex)
The following is not a reason that the subject line should never be left blank is the email will not be transmitted without that information.
What is Email?
Electronic mail is known as email. It is a mechanism for sending messages between computers via the internet. Business, training, technical communication, and document interactions are where it is most commonly used. It makes it feasible to connect with everyone on the planet without troubling them. Ray Tomlinson obtained a test email with text in 1971 and sent it to himself. It is data that's also electronically communicated through a network between two or more parties. A sender and/or receiver(s) are engaged.
An email is a source of real communication that can be used to convey important information to people anywhere in the world. Email serves as a record of communications that have taken place and is kept on the organization's server. While typing a sentence, one must use extreme caution.
Email services have existed longer than the ARPANET and the World wide web. Early emails could only be sent to one machine. Ray Tomlinson launched email services in 1971. He created the first email system, which used the sign with the destination computer to transfer messages between users on different hosts over the ARPANET.
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