what is mbox

How to open an MBOX file using Mozilla Thunderbird tools
the mbox file contains an archive of emails. in other words, this is the most commonly used file format for storing sets of emails in a single file.
Top 4 best MBOX file reader software
mbox is the most common format used to store sets of emails in a single file. mbox stands for mailbox, where emails are stored in string format and every email starts with the header 'from'.