6X9” Mailing Envelopes Rapid Delivery Urgent Letter Custom
Printed paper mailing envelopes with a tamper proof adhesive seal, produced in kraft, coated and specialty papers and finished in 4 colour with UV, lamination, embossing or foil stamping. Closures are available as self adhesive, string button or a tearing strip, and options include a ribbon, a string button or a die cut window. Companies order them as a branded carrier for letters, statements and seasonal greetings, where the outside of the envelope is the first thing a customer sees.
What This Product Gives You
- A tamper proof adhesive seal shows if an envelope has been opened, which matters on statements and contracts
- Printing across the full envelope face turns routine post into brand exposure before anything is read
- Three closure types cover self adhesive for volume mailing, string button for reusable folders and a tearing strip for secure documents
- Kraft, coated and specialty stocks let the same design run as a cheap volume mailer or a gift-grade envelope
- A die cut window removes address printing on the envelope when the address already shows on the letter
- Flat view, 3D mock-up and physical sampling let the envelope be checked before a 500PCS run
Where It Is Used and Who Buys It
Application Scenarios
- Statement and invoice mailings sent from finance and utility companies
- Seasonal greeting and birthday letters sent to customers
- Contract and legal document despatch where tampering has to be visible
- Direct mail campaigns carrying a printed offer on the envelope
- Gift card and voucher envelopes with a window or ribbon closure
Who It Is For
- Marketing managers running direct mail campaigns
- Corporate procurement buyers sourcing branded stationery
- Finance and legal teams despatching sensitive documents
- Print brokers quoting envelope conversion work
- Retail and hospitality brands sending customer greetings
What Goes Wrong Without It
- A plain white envelope gives a recipient no reason to open it before it reaches the bin
- Standard gummed flaps can be steamed open without any visible sign, which is unacceptable for documents
- Envelopes printed on the wrong stock jam in a mailing machine and hold up a whole run
- Ordering without a physical sample means a colour or fold problem is discovered on 500PCS
- Separate window envelope and address printing suppliers duplicate cost on the same mailing
Technical Features
- Tamper proof adhesive seal construction
- 4 colour printing with UV, lamination, embossing and foil stamping
- Closure options of self adhesive, string button or tearing strip
- Options including ribbon, string button and die cut window
- Paper choice across kraft, coated and specialty stocks plus 24lb white wove
- Proofing by flat view, 3D mock-up or physical sampling on request
Specification
| Colours | CMYK or custom colour |
|---|---|
| Paper Types | Kraft paper, coated paper, specialty paper |
| Standard Material | 24lb white wove paper |
| Surface Finishing | 4 colour, UV, lamination, embossing, foil stamping, spot UV |
| Closure | Self adhesive, string button or tearing strip |
| Seal | Tamper proof adhesive seal |
| Options | Ribbon, string button, die cut window |
| Size | Custom size accepted |
| Logo | Customised logo accepted |
| MOQ | 500PCS |
| Proofing | Flat view, 3D mock-up, physical sampling on request |
| Shipping | By express, air and sea |
| Artwork Format | PDF, AI, PSD or JPEG at 300dpi minimum with outlined fonts |
Materials and Manufacturing Process
Materials
- Kraft paper
- Coated paper
- Specialty paper
- 24lb white wove paper
Manufacturing Process
- Artwork preflight and imposition
- 4 colour offset printing
- UV coating or lamination
- Embossing and foil stamping
- Die cutting of blank and window
- Folding and gluing
- Adhesive seal application
- Hand inspection
- Packing
How This Job Is Checked
- Artwork preflighted and a flat view or 3D mock-up approved before printing
- Physical sample produced on request and signed off before the bulk run
- Printed colour checked by hand against the approved artwork
- Fold, glue line and seal adhesion tested on sample envelopes from the run
- Photographs of the finished envelopes sent for approval before shipment
What You Can Change
- Any envelope size cut to your drawing
- Stock selected from kraft, coated, specialty or 24lb white wove
- Closure specified as self adhesive, string button or tearing strip
- Full colour edge to edge printing across the envelope face
- Embossing, foil stamping or UV gloss on the logo area
- Die cut window, ribbon or string button added to the construction
Compared With the Alternatives
| Alternative | How This Compares |
|---|---|
| Plain stock envelopes | A printed envelope is opened far more often than a plain one, though plain stock is cheaper and available immediately from any supplier |
| Poly mailers | Paper envelopes take full colour print, foil and embossing that poly does not, while poly is waterproof and lighter for parcel post |
| Gummed flap envelopes | A tamper proof adhesive seal shows interference and needs no moisture, but a gummed flap costs less on high volume routine mail |
Getting the Best Result
- Supply artwork as PDF, AI or PSD at 300dpi minimum with fonts converted to outlines
- Send the flat dieline if you are specifying a non-standard envelope size
- Place the window position on the dieline and check it against the letter's address block
- Choose the tearing strip closure where the envelope carries documents that must show interference
- Request a physical sample before a 500PCS run if the envelope will feed through a mailing machine
- Keep heavy ink coverage off the glue line so the seal bonds to paper rather than to ink
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6X9” Mailing Envelopes Rapid Delivery Urgent Letter Custom FAQ
What is the minimum order quantity?
500PCS on a standard size. Custom sizes are quoted against the same minimum.
What closures can I choose?
Self adhesive, string button or a tearing strip. The tearing strip is the usual choice where opening must be visible.
Can I see a sample before the run?
Proofing runs as a flat view, a 3D mock-up, or physical sampling on request. Physical sampling is worth it if the envelope feeds through machinery.
Which papers do you use?
Kraft, coated and specialty papers, plus standard 24lb white wove, which is lightweight but durable for volume mailing.
Can you add a window?
Yes, a die cut window is one of the options alongside ribbon and string button closures. Mark its position on the dieline.
How do you ship?
By express in 3-4 working days, by air, or by sea in 15-18 days for larger consignments.
What are the payment terms?
A 30-50% deposit before production with the balance before shipment, by PayPal, bank transfer or Western Union.
Quote 6X9” Mailing Envelopes Rapid Delivery Urgent Letter Custom
Send the quantity, size and finish. Digital samples run in 1-2 working days and custom sample cost is refunded once the bulk order is confirmed.