I would be grateful if you help me to correct the following e-mail.
Please be advise that door master keys should be provided to us .
The number of master keys is shown as follows:
1. 3 nos of grand master key
2. 8 nos of master key for e&m rooms
How to use shall & should?
The correct polite usage in English is different:
"May I remind you that the master door keys should be provided to us?"