Description
Custom Envelopes That Earn the Open
You spent real money on that mailing — the offer, the design, the print, the postage. Then it landed in a plain white envelope that looks exactly like a bill or junk mail, and the recipient tossed it without ever opening it.
The envelope is the gatekeeper. If it doesn’t earn the open, everything inside is wasted spend. A generic envelope also makes a serious business look forgettable and a premium invitation feel cheap. And flimsy or ill-fitting envelopes tear in transit, jam mailing equipment, and arrive looking beat up.
Custom envelopes from Hexa change the outcome. Your branding, colors, and a teaser message on the outside signal that this one’s worth opening. Premium stock and finishes make it feel like it matters. Sized to fit your contents, printed to get noticed.
What a Custom Envelope Does for Your Brand
An envelope is the first impression of everything inside it. Done right, it works in three ways:
- Lifts open rates — branding and a benefit teaser beat a blank white envelope that reads as junk.
- Reinforces credibility — a printed, on-brand envelope makes correspondence, invoices, and invitations look professional and intentional.
- Protects and fits the contents — the right size and stock keep documents flat, uncreased, and undamaged through the mail.
It’s a workhorse for direct mail campaigns, invitations and events, business correspondence, statements and invoices, and branded ecommerce sends.
Pick the Right Size for What You’re Mailing
The envelope has to fit the contents flat when it matters. Here are the common formats — we also cut fully custom sizes.
| Envelope Type | Size | Best For |
|---|---|---|
| #10 business | 4⅛” × 9½” | Letters, statements, direct mail |
| A7 invitation | 5¼” × 7¼” | Invitations, greeting and thank-you cards |
| 6″ × 9″ booklet | 6″ × 9″ | Brochures, marketing, flat sends |
| 9″ × 12″ catalog | 9″ × 12″ | Documents, catalogs, unfolded mail |
| A2 notecard | 4⅜” × 5¾” | Small cards, RSVP, notes |
Choose the Closure That Fits How You Mail
| Closure | How It Seals | Best For |
|---|---|---|
| Gummed flap | Moisten to seal | Standard, budget-friendly runs |
| Self-seal (latex) | Press to seal, no moisture | Fast, high-volume hand-stuffing |
| Peel-and-seal | Peel the strip, press | Clean, secure, professional look |
| Clasp / string-tie | Metal clasp or string | Reusable, bulkier contents |
| Window | Address shows through | Statements and invoices — no address printing |
Print and Stock That Set the Tone
The outside of the envelope is prime, unused marketing space. We make it earn its keep.
- PMS spot-color matching and full CMYK for true-to-brand color
- Kraft, bright white, and premium specialty stocks
- Foil stamping, embossing, and Spot UV for invitations and luxury sends
- Full-bleed printing, return address, and teaser copy on the front or flap
Packaging Expert Tip: Beat the “Looks Like a Bill” Problem
Here’s what decides whether your mail gets opened or trashed. A plain white #10 reads as a bill or junk, and most people toss those on sight. Beat it two ways.
First, don’t look like a bill. Use color, your logo, or a short benefit teaser on the outside — something like “Your exclusive offer inside” — so the envelope signals value, not obligation. That alone moves open rates.
Second, mind the window. If you use a window envelope, the window has to line up exactly with the address block on your insert — get it wrong and every piece in the run shows a misaligned or missing address. Send us your insert layout and we’ll position the window precisely. And when you’re mailing something premium, size the envelope to hold it flat; a folded invitation loses half its impact.
What Every Hexa Order Includes
The same standards apply to every order, with no fine print to get there:
- No die or plate charges — zero hidden setup fees, ever.
- Low 100-piece minimum — run a test mailing or a full campaign on the same spec.
- 8–10 business day turnaround — your packaging is never the bottleneck.
- Free dielines — ready-to-use templates so artwork drops straight in.
- Free 24/7 expert support — real structural and print help, not a scripted bot.
- 100% recyclable materials — sustainable stock your customers notice.
Give Your Mail a Reason to Get Opened
A branded envelope that earns the open is one order away — and it ships in 8–10 days. Send us your specs and we’ll get you a quote, a free dieline, and an envelope sized and printed to fit the first time.
Get your free quote today — no setup fees, low 100-piece minimum, delivered in 8–10 business days.
- 👉 Request a Free Quote
- 📞 Talk to a packaging expert — free 24/7 support
- ✉️ Email us anytime: hello@hexacustomboxes.com
