Marketing Letter and Email to send to landlords

We are looking for a marketing letter and email that we can send to landlords that are advertising their property to rent.
This will be our first contact with a landlord, so will need to sell our services in property letting and management.
We offer a first rate service and we are able to find Tenants and let properties within a week of being on our books.
We also are able to offer a rent guarantee service if required.
We also are able to help the local council housing office and often are able to offer landlords a service that allows a Tenant to move into a property whilst being supported and funded by the council that also offer a Deposit Scheme Guarantee