Is Thanks a lot Formal?

Related questions

1. Is thank you very much correct?
2. Is Guten Tag formal?
3. How do you thank someone for hospitality?
4. How do you thank someone for appreciating your work?
5. How do you write a formal letter of appreciation?
6. Which is correct many thanks or much thanks?
7. How do you say thank you in a formal way?
8. Is it better to say thanks or thank you?
9. Is thank you so much formal?
10. What does Svidaniya mean in Russian?

Tags

1. #sarcastically
2. #rebuke
3. #opposite
4. #thanks
5. #because
6. #depending
7. #something
8. #insult
9. #often
10. #formal
11. #exact
12. #accidentally
13. #context
14. #someone
15. #unhelpful
16. #careful