Email Marketing Campaign Creation with automation

We are a property management company based in London. In addition to traditional property management we also provide: Guaranteed Rent Service (guaranteedrental.org) Tenant Eviction Service (tenantevictionservice.co.uk) Maintenance Service (lebernpropertymaintenance.co.uk) Would like a strategy created for existing client to keep engaged with the ultimate goal is to convert to our property management service Would like a strategy for non existing clients to promote our services and raise brand awareness and an automated email sales cycle to be created We have an account with mailchimp .