We updated our Group Email to use a new method for sending attachments. Instead of attaching the files, the new method uploads the file(s) and includes a link to the files in the email. This method will allow larger files to be sent. And, it will be better for user's whose email service does not allow large attachments to be received.
Note: Be sure any attachments are fully uploaded before sending the email. Otherwise, the link to the file will not be included in the email. If the upload is complete, there will be a red Delete button next to the file as pictured below - not a Cancel button and a progress bar.