How do I send multiple emails?
Being more of a corporate product, the developers don't offer enough information to properly respond 100 % to your question. Sure, there is some limited support on the official website, but nothing precise regarding the way you can send multiple email messages or if it's even possible.
Here is the support page: http://www.abelmed.com/Support/FAQSupport
The contact link if you need to ask them for official support: http://www.abelmed.com/ContactMedicalSupport