Periodically I'll google Irish email etiquette because I can never remember the sign-offs and it will be perpetually entertaining to me when they translate Beir bua as Best wishes.
I'm sorry, I'm a medievalist, and this phrase is literally in Oidheadh Con Culainn:
"Best wishes". What a funny way to tell somebody to take victory!
Anyway, this is how I read emails with Irish salutations:
O Ruairi, my ally,
I hope this email finds you willing to aid me in battle. If you're still open to sending me those unpublished editions you're working on, I would be incredibly grateful, as they'd help a lot with my research.
Take victory,
Finn