No news is good news.《諺》

drop someone a line（人に）

hear ~ on ［over, via］ the grapevine

haven't heard from someone since

haven't heard from someone in __ years

haven't heard from someone in months

hear a sound out of

have the pleasure of hearing from

be always good to hear from

receive occasional letters from

send someone an encouraging letter

bring someone the good tidings

hear on ［over, through, via］ the grapevine that

I am writing in reply to your letter of Nov. 15 2002.

We are taking the liberty of informing you that ~.

I am writing concerning ［in regard to］ the computer I recently purchased from you.

Awaiting to hear from you soon.

I'll soon write to you again.

I am writing in response to your October article of the question "Should U.S. military forces be withdrawn from Japan?"〔【出典】Hiragana Times, 1997年4月号◆【出版社】株式会社ヤック企画 〕"HT126035", "2330293"

It's 3 o'clock now. Thank you, all listeners, for sending many letters again this week.〔DJ〕

NTT Docomo started its "otayori photo" service on July 1.〔【出典】Catch a Wave, 2009年9月25日号◆【出版社】株式会社浜島書店 〕

There's kata de kaze o kiru （lit. 'cut the wind with your shoulders,' i.e., swagger）, okubyo kaze in fukareru （lit. 'be blown by the winds of cowardice,' i.e., be struck with fear）, and kaze no tayori （lit. 'the wind's news,' i.e., hearsay）〔【出典】Hiragana Times, 1995年7月号◆【出版社】株式会社ヤック企画 〕"HT105058", "2520366"

your kind letter

A little bird told me.〔【直訳】小鳥が私に話してくれた。◆秘密を話した人の名を言いたくないときに「（おしゃべりの）誰かさん」という意味でa little birdを主語として使える。〕

I have heard from her only once so far.

glad tidings

How very nice to hear from you.《レ》

Mom, finally I have to write you a sad letter.〔【出典】Hiragana Times, 2005年8月号◆【出版社】株式会社ヤック企画 〕"HT226025", "2403094"

While it is difficult for me to ask, I am writing to see if you have any available time to give me a little bit of help."LE200045", "2567182"

This letter is to confirm that Jerox would like to buyback your current and other copiers or printers and exchange them for the new Jerox digital products at a highly discounted rate."LE-K0012", "2535312"

No news is bad news in this case.

if someone does not hear from ~ favorably by this date

This is my first letter to the Hiragana Times.〔【出典】Hiragana Times, 1996年12月号◆【出版社】株式会社ヤック企画 〕"HT122110", "2533900"

I hate to trouble you, but I really felt I had to write.《レ》

But we may sleep on it now, for I shall be surprised if we do not hear something further from Brook Street in the morning."〔【出典】英文："The Resident Patient" by Arthur Conan Doyle、訳者：大久保ゆう〕"_CO-RESI", "2275206"

That was last Friday, Mr. Holmes, and I have never seen or heard anything since then to throw any light upon what became of him."〔【出典】英文："A Case of Identity" by Arthur Conan Doyle、訳者：大久保ゆう〕"_CO-IDEN", "2461610"

hear it in the breeze

I haven't heard from him since.

write to someone as often as one can

Please let me hear from you.

First one is from "Heartbroken Ann of San Diego." It says "Hello. I'm a 28-year-old ex-office clerk. I broke up with my boyfriend last week."〔DJ〕

I will send you another postcard from Kyushu."LE200057", "2344981"

Please disregard this notice if you already sent the payment to us.《レ》〔滞納◆請求書〕

Although, judging from his letter, Shinichi's English seems not so bad.〔【出典】Hiragana Times, 1995年7月号◆【出版社】株式会社ヤック企画 〕"HT105037", "2242886"

Drop a line to me.

I am writing to express my gratitude for the exceptional service I received while flying with your airline last month."LE200006", "2330311"

The people around Kansai were pretty excited about all the letters of support they received from all over the country and the world," says Mayumi.〔【出典】Hiragana Times, 1996年10月号◆【出版社】株式会社ヤック企画 〕"HT120136", "2497607"