Add activity by emailing to someone other than contacts in the account

There is an “Update via email” for the Item Updates. Is there a similar feature for Activities? I want to be able to add activity (e.g note) by sending an email rather than doing it directly on Email and Activities page.
I know that I can log my outgoing emails into Email and Activities. But this doesn’t work when if, for instance, I am emailing my collegues about my call summary with an account. This is only helpful if I am emailing the contact in that specific account.