Formal:
* Mit freundlichen Grüßen (With kind regards) - This is the most common and neutral sign-off for formal letters.
* Hochachtungsvoll (With high esteem) - This is a very formal sign-off often used for official letters.
* Mit freundlichen Grüßen (With friendly greetings) - This is a less formal version of the above.
* Mit bestem Gruß (With best regards) - This is a slightly more personal and friendly option for formal letters.
Informal:
* Liebe Grüße (Love greetings) - This is often used with friends and family.
* Viele Grüße (Many greetings) - This is a common and versatile sign-off for informal letters.
* Beste Grüße (Best greetings) - This is a slightly more formal version of "Liebe Grüße".
* Alles Gute (All the best) - This is a good choice for wishing someone well.
Other options:
* Freundliche Grüße (Friendly greetings)
* Grüße (Greetings)
Tips:
* Always use a comma after the sign-off.
* The formality of the sign-off should match the tone of the letter.
* If you are unsure which sign-off to use, it is always best to err on the side of formality.
Example:
```
Sehr geehrte/r Frau/Herr [Name],
[...]
Mit freundlichen Grüßen,
[Your Name]
```
Let me know if you have any other questions. 😊