Re: Daily Email Limits, by calendar day or 24h clock?
WARNING: I am not an employee. I don't have the correct answer. But if I were to guess, I'd say it's a calendar day as defined where Marketo's initial data center resides. My assumption is 12-12 PST.
I don't know for certain, but I doubt that they are simultaneously calculating for billions of leads whether over 24 hrs have X number of emails had been sent. It just seems more memory efficient to do calendar day/week.