These envelopes are most commonly used for political campaigns, churches, and non-profit organizations. The have a wide flap, so that there is room to fill out the requested information, insert a check, and then send back to the pre-printed address. These can have prepaid postage permits which allows the user to not have to add a stamp, increasing ease of reply. Prepaid accounts are set up by using a BRM or Business Reply Mail permit, or a Courtesy Reply Mail account. We can set up both easily for you, just contact us regarding what your needs are, and we can discuss the options available to you.