While there is not a de facto attachment size limit in PreVeil Mail, we recommend limiting the size of attachments to no larger than 75 MB in size for best performance in sending and receiving the message.
Note: The above limit is for the fully installed version of PreVeil. For PreVeil Express users, the attachments should be no larger than 10MB.
We would suggest using PreVeil Drive for file sharing instead as it is better able to handle sharing larger files and there is a built-in ability to set sharing permissions in Drive in a way that isn’t possible with email attachments.
Please see: https://preveil.atlassian.net/servicedesk/customer/portal/2/article/318865532?src=-1719636891 for information on using PreVeil Drive.