yes, you can send the proposal for funding the projects by mail or courier rather than the email because many times email get bounce back or sent into spam main so that the potential employer could not get the email. It is essential to send your brochure with covering letter by main or courier so that it will reaches in to the safe hand. There are many non-profit organization adopt this approach to send the main via courier or Postal services.
What are the chances of getting funds through mail or say indirect approach?
Although the chances for getting the funds for the non-profit organization through mail are very less but you can create an awareness by sending it to by post and in the mean time you can send the representative to approach the party to get the funding for the healthcare projects. It is one of the most important task for you to get adopt the personal approach to take the benefits and get the good results. Personal approach can give you better result than the mailing.