We all know what envelopes are and how they are used but are we using them to our advantage? It is a marketing opportunity every time your business sends out an invoice or letter to a client, customer, or potential customer! Put your brand/logo and return address right on the front of that envelope and keep your business on the top of their mind.
Return envelopes are especially useful if you are mailing out invoices. Make it easier for your customers to mail you payments by giving them an envelope that is already pre-addressed to you! (They will appreciate your thoughtfulness)