Email letters

I would like to ask you if you can create for me offer emails for my company.
1. Letter to retail centres to rent space from them (asking them all information and tell about us)
2. Letter offering our services to new clients who doesn’t know about our service
3.letter for collaboration with stores/ bloggers/ other companies providing services .
What would be the price for it ?
How long will it take you to make it ?
Our website jkimmortalallure.co.uk