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An Envelope is a Statement

And whether it’s a billing statement or a direct mailpiece, we ensure each envelope is crafted with our unwavering commitment to quality, innovation and excellence.

Our Envelope Know How section is your reference point to learn about everything-envelope from size specifications to printing to production in our How an Envelope is Made video.

how an envelope is made

How an Envelope Is Made

See how an envelope is made on our production floors with our committment to quality, expertise and ingenuity at work.

quality of work

Quality at Work

Watch as our Associates go through a variety of quality checks to ensure that our customers receive the best product possible.

Ink Production

Ink Production

Watch how ink is mixed and produced for our custom envelopes with precision, science and dedication to our customers’ brand standards.

#10 envelope for USPS Promotions

USPS Promotions & Incentives

The USPS has designed the 2023 incentives to create excitement about the mail and reward innovative mailers.


Envelope Size Charts

At Tension, there isn’t a “standard size” envelope because we make custom envelopes to fit our customers custom needs. Find specifications for your direct mail campaign here.

transpromo for nonprofit organization

Cross-sell and Build Loyalty with Transpromotional Messages

Increase your visibility and leave a lasting impression by including transpromotional messaging (promotional offers on your transactional mail).


USPS Resources

The USPS offers the mailing industry many resources to ensure cost-savings and mail specifications are met.


White Papers

Tension produces in-depth white papers on industry specific topics, available for download.


Industry Reports

Industry reports provide members of the mailing community with helpful research, insights and trends to better enhance their industry knowledge.

custom direct mail envelope

The Art and Science of Direct Mail Envelopes

Use art and science to engage and intrigue your reader with involvement devices, creative graphics, color and more to improve your response rates.

envelope terms icon

Glossary of Envelope Terms

An A-to-Z guide for envelope terms and definitions to help educate you in your mail endeavors.


Print Processes

Learn about the different printing processes for direct mail, and when to use one over the other.