Accessing the ID of an inbound email

Hi,

I'd like to store some incoming mails after parsing them, but I'd like to have a reference to them in the data I create from the parsed mail. IE the model ID the InboundEmail model that I get in my Mailbox (not the mail ID).

The InboundEmail is not yet persisted once it reaches my mailbox, is there any issues with calling $inboundEmail->save(); within the mailbox?
This would allow me to get the ID and store the reference to the raw mail.

Cheers,