May I remind you that ...
Further to your letter of ...
Can you send me details on ... ?
We propose ...
Why don't we ... ?
Here's the information you wanted.
Let me know when you have a definite date.
I trust you will find the following points of interest.
Could you please confirm the date?
I got your letter about ...
I would be very grateful i you could send me ...
Don't forget that ...
