Logging emails by bcc in Timeline

For the Email logging, it looks like the only option right now to copy and paste in an email that's already been sent (ie. from Gmail).  It would be nice if there a way to actually cc or bcc Gainsight to create that email log, like we can to Salesforce.  It would also be nice if these were created automatically from email assist CTAs or other outreaches sent from GS.