お世話になってます vs お疲れ様です


I work in Company A, and mailing within Company A usually starts with:

> 〇〇さん、
>
> お疲れ様です、〇〇です。

We have a joint dev team with Company B, and mailing to Company B starts with:

> 〇〇さん _or_ 〇〇会社ＸＸ事業担当者様
>
> いつもお世話になっております、〇〇です。 _or_ 〇〇会社の〇〇と申します。

An employee of Company C is on loan to our Company A. Which greeting should I
use when mailing to Company C employee?




Both are possible. To put it simply, お疲れさまです looks less respectful but more
friendly, whereas お世話になっております looks more formal and respectful. Which to use
would depend on your character/preference, the custom of your company, and the
actual relationship between you and the person in Company C. Which describes
the person C better, your colleague, or your client?

If you're unsure, it's always safe to get away with お世話になっております.




Both are possible. To put it simply, お疲れさまです looks less respectful but more
friendly, whereas お世話になっております looks more formal and respectful. Which to use
would depend on your character/preference, the custom of your company, and the
actual relationship between you and the person in Company C. Which describes
the person C better, your colleague, or your client?

If you're unsure, it's always safe to get away with お世話になっております.

