Support Database
I'm sending an email to an external user with a large file attachment and
they can't receive it. Why is that?

Several ISP's and hosting companies place restrictions on the size of individual emails that can be received and sent though their servers, and although we do not place such a restriction, we have no control over such restrictions elsewhere.

As a workaround, customers are advised to create an FTP login via their Domainscape control panel and upload the file attachment to that location. Customers can then simply email the recipient those FTP details, and they can then download the file via FTP using the login you created.

As another suggestion, some versions of Microsoft Outlook (and Microsoft Outlook Express) support an option "break apart messages larger than (some size)". Setting this to say 1MB is often appropriate, but this is only useful if you know the recipient also uses Microsoft Outlook or Microsoft Outlook Express (in which case their mail client will re-combine the email).