What is the subject in mail

In the context of email, the "subject" refers to the brief summary or title of the email that appears in the email header. It is usually a few words or a short phrase that gives the recipient an idea of what the email is about.

The subject line is important because it helps the recipient quickly determine whether the email is relevant to them and whether they want to open it. A good subject line should be:

Here are some examples of good subject lines:

On the other hand, a bad subject line might be:

Remember, the subject line is the first thing the recipient sees, so make it count!