Send large attachments or not

When you create a Zivver message in Microsoft Outlook, you can add an attachment in two ways:

• With the Outlook attachment button. Your mail server or secure email gateway (SEG) sets the maximum attachment size through the message size limit. Outlook adds the attachment to the message. As a consequence, when you send the message, your mail server or SEG processes the attachment.

  • For Microsoft Exchange Online, the default maximum message size is 25 MB. You can increase this limit up to 150 MB. This means that the message and any additional attachments together cannot exceed 150 MB.

• With the Zivver attachment button. The maximum attachment size is 5 TB.

The attachment is not added to the message in Outlook. Instead, the Zivver OWA add-in uploads it directly from OWA to the Zivver Server.

This bypasses the maximum message size of Microsoft Exchange Online.

These are the consequences:

• Your mail server or SEG does not process the attachment.
  • The attachment is part of the Zivver conversation.
  • The recipient can download the attachment regardless of its size.