I'm looking for an easy way that would report the number of overall emails sent by year (not people sent to - just the number of emails we sent last year)?
Thanks for your help.
Using RCE, you can run an "email sent" analysis. While this will give you the number of sent emails (by email, to number of people), the number of emails listed (rows) is what you're looking for:
Email insights should provide this as well.