Mbox File //free\\ Instant

An (short for "Mailbox") is a specialized file format used to store and organize collections of email messages. It is one of the most common formats for email export and archiving because of its simplicity: it stores all emails from a folder or entire account as plain text in a single, concatenated sequence.

The "From " line serves as a delimiter to separate email messages. This line is crucial in identifying the start of a new email message. The delimiter is always followed by a newline character. mbox file

And now I had opened the file.