How do I attach the attachment in the mail when sending an update as an admin?
After selecting groups, tags, and writing the text, upload an attachment using the paper clip-symbol, and choose whether you want the post to be sent out by email or not.
To make sure everything looks OK, send a preview email to your email by clicking the ‘preview email’ button. Note that attachments are not included in preview emails.
Click ‘post’ to make the post available to the selected recipients. If you’ve chosen ‘also send as an email,’ the post will be sent out as an email.