You can now send email to Google+ users without knowing their email address

[iMore.com]

Google has just implemented a change to Google+ and Gmail that will enable you to email other Google+ users without having to know their email address. If you want to send an email to somone on Google+, but do not know their email address, simply type their name in the 'To' field in Gmail, and they'll appear as one of your Google+ Connections.

Full story from the iMore Blog...