For our shared/SDX/reseller hosting, and users with cPanel on their VPS/dedicated, the maximum email size is 50MB. This is the default set by the developers of the mail server and they say it is a safe value. Anything higher than that can be abused for denial of service.

Note: 50MB does not mean you can attach an exactly 50MB file. The file attachment is encoded for email transmission and can take more space. For example, a 10MB file may take 12MB in email after encoded data.

If you need to send/receive large files, please use FTP.

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