One normally does not have to reply to a thank you letter.
you welcome
response
The correct reply to "god speed" would be "Thank you" or "And to you as well."
You can write a simple 'thank you' when you make a reply.
"Thank you, it was so kind of you to remember me"
Thank you for your quick reply
Thank You.
No, it is not. When not used as a direct reply (means I express gratitude to you), thank you is a noun (often written thank-you).
i am glad to help you
Your welcome. Spanish(Da' nada)
"You're welcome."