An addition to a letter written after the writers name?

You're likely asking about the closing of a letter, which comes after the writer's name and is often followed by a comma. Here are some common closings, along with their formality levels:

Formal:

* Sincerely

* Respectfully

* Yours truly

* Yours faithfully

* With kind regards

Semi-Formal:

* Best regards

* Kind regards

* Warm regards

* All the best

* Regards

Informal:

* Cheers

* Thanks

* Take care

* Best wishes

* Love

Other options:

* You can also personalize your closing with a phrase like "Looking forward to hearing from you" or "Thanks again for your time."

* You can also use a closing that reflects the topic of the letter, such as "Wishing you all the best in your new role" or "See you soon!"

Important Considerations:

* The tone of the letter: A formal letter will require a formal closing, while a casual letter can use a more informal closing.

* Your relationship with the recipient: The closing you use should be appropriate for the relationship you have with the person you are writing to.

* The purpose of the letter: The closing should reflect the purpose of the letter. For example, if you are requesting something, you might use a more formal closing.

Let me know if you have a specific letter in mind, and I can help you choose the right closing!