If I add multiple recipients to the destination email field, can I choose which recipient a particular recording will be sent to?

Yes and No. 

SpeechExec Mobile Hosted by Philips

No, at this time, you are not able to route dictations to individual recipients.  If you have added multiple recipients, the dictation will be sent to all of them.  Philips may add this feature in the future, we’ll keep you posted.

SpeechExec Mobile Hosted Internally (through SpeechExec Enterprise)

Yes, this feature is known as Keyword Routing and can be applied if you are hosting the Philips SpeechExec Mobile module along with your SpeechExec Enterprise Solution.

Verification Source:  Rick Maxwell, Philips Technical Support

Verification Date: 1.3.12