我们非常愉快地通知您……
We are pleased to inform you that...
We are excited to inform you that...
We are happy to inform you that...
我们想通知您……
We would like to inform you that...
我们非常荣幸地通知您……
We take pleasure in informing you of... *用于转达好消息时。
We take pleasure in informing you that...
我们很遗憾地通知您……
We regret to inform you that... *通知的内容不太好时。
我们抱歉地通知您……
We are sorry to inform you that... *比用regret的语气要婉转。
请允许我通知您……
Please be advised that... *好、坏消息均可以用。