Useful language - thanking

- Many thanks for…
- Many thanks for your email of yesterday attaching X in respect of Y.
- I would like to take this opportunity to thank you.
- May I take this opportunity to thank you for…
- Thank you for instructing us to act on your behalf.
- Thank you for coming in to see me.
- Thank you for returning the forms duly completed.
- Thank you for considering my request.
- Thank you for any help you can provide.