This is simple. I don't. I don't communicate when I'm angry. (or at least I shouldn't)
I get quiet...and I percolate. And if given the time to do such, I work it out in my head.
I live by the mantra, if it's not going to bother me a day/week/month from now...then let it go. BUT, it takes time for me to arrive at that logical conclusion.
When I'm angry/upset, I need time to diffuse...to come down from that place. I know it is the yin and yang of feeling ALL my emotions so intensely. But, I take the good with the bad. And there's far more good than bad. I just need to keep reminding myself of that...