Sending very large attached files by email* increases the chances of having a communication error on your Internet line. These errors are often not even noticeable to the user, due to their short duration, but by interrupting communication with The server also cuts off sending the email, due to how the email delivery protocol works, the message is normally tried again, but again from the beginning, that is, if it had already transferred half of its attachment, It didn't help at all. This can cause problems with your email, long waits, errors, and even crashing your own machine.
If you are going to handle files of that size, it is better to share them via FTP, this file transfer system is proof against this type of errors, if there is a communication problem, wait for it to disappear and when it is solved continue uploading the file from the position where it was left, not from the beginning like the one sent by email.
This is even more important if it goes to more than one recipient, because when you send a file as an email attachment, the delivery process will be repeated as many times as there are recipients. However, if you upload it via FTP and in the content of your email It directly puts the link to the file, your recipient will only have to click on it and it will download directly to their machine without problems and delivery.
Using FTP can be as easy as dragging icons between windows, as you do with any other folder on your desktop, see in the following link how to manage an online folder from Windows in which you can add files by simply dragging them from other folders, as you usually do with your documents on your desk.
It is better to create a subdomain, with its own FTP user, where to store the attached documents, so that the rest of the users can download them.
