We've upgraded our email system to now allow for multiple attachments when sending out emails. Previously, email messages were limited to 1 file attachment per email, however, you may now select any number of attachments for sending, as long as the total email size does not exceed the per-message limit.
Total Email Size Limit
Email messages must be less than 10 MB in total size for all body content & attachments to be accepted. This is unchanged and has been in effect for many years. Emails over this total size are not accepted. Keep in mind when composing emails that there is other content beyond just attachments that is included so you'll typically need to keep your attachments to 7 MB or less in order to fit both the attachment and all other body content in your message.