[Sorry if this should be merged somewhere else, but I didn't see anything similar in the AA forum]

I'm not usually a big complainer (at least by flyertalk standards...) but have had a recent run of bad luck on AA over the last couple months. Does anyone have advice on whether it's more effective to list everything out in a single email or to break it up by trip/issue?

Background: AA Plat, US Plat soon to be CP via trial preferred. I've just let a few previous issues go (red eyes cancelled and personal cost to go back home, forced move to a middle seat so someone too large to fit in it could have the aisle, rude customer service, bad rerouting help resulting in more cancellations, etc.), but after more mechanical ish last night it feels like time to send them a complaint.

Thanks!