When someone donates to your cause or purchases from your company online, there is only one appropriate email response, Thank you! Not thank you and will you give us more, or thank you and don’t you also want this, just thank you. When you add an and, but, or won’t you, the client’s previous action is negated and they don’t feel appreciated. If you want to create a regular customer, or Patrons, follow up in a month, inquire about how they feel about their purchase or the outcome of the cause they supported. You’ll have a client forever.