Custom Security Envelopes
for professional business mail
Custom security envelopes give your business a polished, professional way to send checks, invoices, statements, confidential documents, and other important mail.
Most customers are not looking to invent a completely new envelope. They simply want a reliable security envelope printed with their logo, return address, company colors, or other standard business information. That is exactly what custom printing allows you to do.
Browse our custom options below to get started
Add Your Logo, Return Address, or Business Information
Upload Artwork
Upload your logo or artwork files.
Add Logo
Place your logo where you want it.
Print Return Address
Add your return address or select saved addresses.
Add Custom Text
Include business info, departments, or special messages.
Choose Ink Colors
Select ink colors including black or full-color printing.
Review Proof
Review your digital proof and approve before we print.
Security Envelope Sizes
| Size | Dimensions (inches) | Common Uses |
|---|---|---|
| #6 3/4 | 3 5/8 x 6 1/2 | Checks, receipts, short notes |
| #9 | 3 7/8 x 8 7/8 | Invoices, statements, letters |
| #10 | 4 1/8 x 9 1/2 | Business letters, invoices (standard) |
| 6 x 9 | 6 x 9 | Catalogs, booklets, larger documents |
| 9 x 12 | 9 x 12 | Contracts, proposals, legal documents |
What Is a Security Envelope?
A security envelope includes a printed pattern, called a security tint, on the inside of the paper. This pattern helps prevent people from seeing the contents through the envelope. It is commonly used when mailing financial information, account details, payroll documents, healthcare forms, donation records, and other sensitive materials.
Why Order from Granite Woods?
Easy Online Customization
Design your envelopes in minutes with our simple online tools.
Standard & Window Options
Choose from a wide range of sizes, window styles, and closures.
Digital Proofing
Review a digital proof before printing to ensure perfection.
Real Customer Support
Our U.S.-based team is here to help every step of the way.
Flexible Quantities
Low minimums and bulk pricing to fit your business needs.
Frequently Asked Questions
1. Are security envelopes really private? Can anyone see through them?
Our security envelopes are designed with opaque stock and a patterned interior tint that helps prevent visibility of the contents inside. This added layer of protection reduces the risk of sensitive information being exposed during handling or transit.
Confidential documents stay confidential.2. Can security envelopes be tampered with?
Our envelopes are built with strong seals and durable construction to help ensure they stay securely closed during mailing. While no envelope can prevent all interference, these are specifically designed to discourage tampering and protect important contents.
Secure from seal to delivery.3. What if there’s a mistake in my artwork?
Before printing, a real team member reviews your file and provides a free PDF proof for approval. You’ll see exactly how your design will appear before production begins. And if we ever make a printing mistake, we’ll make it right — quickly and without hassle.
You're never left dealing with an error alone.4. Will my envelopes look professional?
Yes. Custom printing ensures your branding appears clean, sharp, and consistent. Security features are built into the envelope interior, so your external presentation remains polished and professional.
Protection without sacrificing appearance.5. Are these suitable for financial or legal documents?
Security envelopes are commonly used for financial statements, contracts, healthcare communications, payroll documents, and other sensitive materials. Their purpose is to add an extra layer of privacy and discretion for mail that matters.
Designed for responsibility-heavy mailings.6. How quickly can I receive my order?
Our standard print production time is 4-8 business days, and the standard free shipping estimated time is 2-4 business days. If you're on a tight schedule and need them faster, we also have rush options available. We offer reliable turnaround times so you can plan your mailings confidently.
No guessing, no surprises.7. Is there a minimum order requirement?
We offer reasonable minimums so businesses of different sizes can order what they need without overcommitting.
Flexibility for 100 or 10,000 pieces.8. What if I’m unsure which option is right?
Just reach out. Our team can help you choose the right size, features, and specifications based on what you’re mailing.
You don’t have to figure it out alone.