E-mails size are calculated bigger than actual size
I found out that e-mail attachments' size are treated bigger than their actual size. For example, I need to send an e-mail with an attachment, the attachment's actual size is 14.5 MB. However, after I sent the mail, the server of mailbox.org calculated the attached file is 19.9MB! All my e-mail are bigger than their actual size! This is quite not fair! We know that mailbox.org needs users to upgrade their plan to earn money, but the way of making files size bigger than their actual size cannot be accepted! Please calculate the size of attachments normailly.
An attached file's actual size:
The file's size showed on the server: