Email marketing and lead generation

We are based in Bangalore. We are looking for help with an email campaign to generate enquires for the services listed below. If response is encouraging then this would be long-term. We would specially be interested in anyone who has worked for clients who are company secretaries, cost accountants, chartered accountants and lawyers. 1) Digital Signatures 2) Outsourced Accounting Services 3) Incorporation of private limited companies / LLP 4) Registration of partnerships, trusts, coopertative society 5) Registration for GST, MSME, IEC, Trademarks, PF, ESI. Professional Tax, Shops & Establishments etc. Idea is to pick one or two things – check the response and then slowly scale-up and complement with other online marketing activities as required