I want to know API limit of 250 per user per second means 250 is concerned to the developer account of company or 250 is the limit to user's email that we integrate like we are x company and we have a,b,c users so limit is on x or on a,b,c. Hope You got My Point. Need Solution in bit urgency thanks for your support!

and I also want to know that from per day 10000 auth grants does this include the authorization token recovered

I tried working down put the requests for multiple users but couldn't figure out this 250 limit is on whom, I check the there is limit clearly mentioned for auth token