I’m just writing to let you know
a
im writing to tell you about
a
I’m very sorry about
a
I’d like to apologise
a
I’d be really grateful if you could
a
I was wondering if you would give me a hand with
a
I was wondering if you would do me a favor
a
I was over the moon to hear about
muy contento
I was thrilled to find out that/about
me emocioné al descubrir
I’m afraid I’ve a bit of bad news for youa
a
all the best
a
keep in touch
a