A non-printing envelope company providing wholesale converting exclusively to the trade.
Envelope Converting Service was founded in July 1985 with the concept of being an extension of the “Print Shop.”
Printing companies from coast to coast have discovered that Envelope Converting Service gives them the ability to provide their customers with high quality printed envelopes at an affordable price with a quick turn.
We are a non-printing envelope company providing wholesale converting exclusively to the trade. We never compete with you for your customer.
We are an extension of your print shop. We will support your efforts to the utmost of our ability to help you provide your customers with a full line of fine quality products.
Converting and manufacturing envelopes, gluing and folding, is what we do.
Please contact us with projects that need help and we will solve them together. Remember, your success is our success.
Letterpress die cutting is for critically registered bleeds and borders, where a minimum of wrap over the fold and minimum image shift is required. Letterpress FAQ →
High die cutting is for jobs without bleeds registering on the folds, and is the faster and more economical of the two. High die FAQ →
Clients select one-up or multiple-up layout templates, which are available for download.
Manufacturing envelopes, gluing and folding is what we do. With your continued support, we intend to be ready to solve any and all opportunities that you may send our way.
The trade
Converting envelopes is a trade. The equipment on our floor was built to be maintained rather than replaced, and some of it carries a cast maker’s plate from a New York machine works, F.L. Smithe, that has been building envelope machinery for well over a century.
The knowledge to set one up, adjust it and keep it holding register is the actual product. That is what you are buying when you send us a job, and it is why we would rather talk through a tricky piece with you before it goes on press than fix it afterward.
From the floor
No stock photography here. These were taken on our floor in Seattle — the iron we run every week and the tooling we have collected across four decades of converting.

The plate reads Original Heidelberg Cylinder, and the badge marks the 110-year anniversary of the Heidelberg press works, a line that dates to 1850. Cylinder presses like this were the workhorses of the letterpress era, and this one still wears its factory black.
We keep machines like this because they were built to be kept: adjusted, rebuilt and run by people who know them. That is the philosophy behind everything on our floor, from the F.L. Smithe machines to a drawer of window punches that has been growing since 1985.






Meet ECS
A short introduction to the shop, the people and the work we have been doing for printers since 1985.
A short introduction to the shop, the people and the work we do for printers.
Send us a PDF and we will price it out. Most jobs run in 7 to 14 days.