突然のお手紙の英語

an urgent letter

a heart-warming letter

a letter presented in a respectful or humble manner

a piece of correspondence that is of little importance

a letter

a letter written by oneself

an unauthentic document

a trivial letter

correspondence

a begging letter

He tore the letter to pieces.

an angry letter

in one's letter

contents of a letter

（人になら）to furnish one with a letter of introduction―（物品になら）―accompany the goods with a letter―（手紙になら）―send a letter under a covering letter

I have written to him―communicated with him.

to write （a letter） to one

a postal letter

I ran my eyes over the letter―glanced over the letter.

a letter of apology

A letter reaches its destination.

（郵送するのなら）to post a letter―（書を送るの意味なら）―write （a letter） to one

a letter that is sent separately from something else

a letter addressed to me

a note of excuse

There is a P. S. to the letter.

to fold up a letter

to tear up a letter

The letter blew off.

We are flooded with letters―deluged with letters―inundated with letters.