I fail to see the "offense". Maybe the tone in that email is aggravating to you as it seems to be for him, but... I can only shrug and wonder. I'd say it's not

I fail to see the "offense". Maybe the tone in that email is aggravating to you as it seems to be for him, but... I can only shrug and wonder. I'd say it's not a bit worse than half of the promotional emails from services I (or my company) pay for in a week...