While our system allows for large-ish files to be sent and received, with a limit of 20MB per email, this is not a recommended way to share files. Some mail providers have limits smaller than ours, and certain Email programs, such as Microsoft Outlook have a built-in size limit for sending emails. This means there is a very good chance your email will never get delivered.

Email was never intended to be a file sharing system.

If you need to send or receive large files, we recommend using a service such as Dropbox, where you can share large files easily without the limitations of email. Dropbox provides a free account where you can store up to 2GB of files for sharing: https://www.dropbox.com/basic where you upload your large file, then provide a link to that file in your email. There are other solutions as well, some can be found in this list: https://www.cloudwards.net/top-10-secure-dropbox-alternatives/. This information is provided as a courtesy only, and any external links may be inaccessible as we have no control over their content.

We are not affiliated with Dropbox, nor can we provide any support for Dropbox or related services.

Please be aware that the size of the file you are sending via email can be variable, depending on the mail client you are using and the type of file you are sending. For instance, sending a large image or PDF file that is 10MB in size can actually grow to as much as twice that size because of the way the email program "encodes" it so that it will be rejected by a mail server with a limit of 15MB. This is not a function of our mail server but has to do with the way the email is rendered by the mail program, such as Outlook. Microsoft has some basic information on this limitation here: https://answers.microsoft.com/en-us/office/forum/office_2003-outlook/microsoft-outlook-doubles-pdf-attachment-size/74d123de-33ee-4791-bd65-63d9c455b16a

You're not sending the original file, you're sending an encoded version of it that can be anywhere from 20% to 60% larger than the original file.  It doesn't matter what size you see on the disk.  The size of the transmission will always be larger.