This Envelope with Letterhead mockup feeds two birds with one scone.
You get the complete package of the envelope, letterhead, and business card designs in a customizable PSD where you control the final product based on what you want. Everything is layered (literally, not metaphorically) and you can edit it via smart objects, as well as having the ability to change the colors.
The download is completely free with no catch and no gimmicks, meaning this here is what we call a no-brainer! Download, use and enjoy within a matter of minutes.