If you want to store and send large files beyond the attachment limit use the Briefcase feature in the Zimbra web client.
25MB is the maximum size of an email and we recommend no more than 17MB of attachments
Checking your mail online is easy without the need to set up an email program or mobile app. You can log into your DirectLink email account by going to mail.mydirectlink.net. Click here for a quick tutorial showing how to access the DirectLink webmail.