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Item #:
109906841
Postmaster C5 Window Envelopes 229 x 162 mm A5 90 GSM Self Seal White Bulk Business Pack of 500
86% of respondents would recommend this to a friend
Item #:
109906841
USD 35
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from UK
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In stock
Imported from UK store
QTY:
Order now and get it around Wednesday, October 07
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Keeps your documents private with our opaque blue pattern inside while being PEFC-certified for sustainability.
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Note: Step Up Voltage Transformer required for using electronics products of UK store (230 V). Recommended power converters Buy Now.
What Stands Out
Self-Seal Design
The self-seal mechanism ensures quick and secure closure without the need for moisture, offering convenience for busy offices and saving valuable time during mailing.
Bulk Pack Value
This bulk pack of 500 envelopes provides exceptional value for businesses, reducing the need for frequent reorders and ensuring you always have supplies on hand for all your mailing needs.
Professional Appearance
The crisp white color and A5 size present a polished and professional look for important documents, enhancing your brand's image when sending out correspondence.
Product Details
| Brand Name | Postmaster |
| Model Name | Postmaster Business |
| Manufacturer | Bong |
| Unit Count | 500.0 count |
| Item Dimensions L x W | 22.9L x 16.2W centimetres |
| Size | A5 |
| Colour | A5 x 500 |
| Occasion | Anytime, Business, Formal |
| Style | Window |
| Item Shape | Rectangular |
| Occasion Type | Anytime, Business, Formal |
| Closure Type | Self-Seal |
| Number of Items | 500 |
| Special Features | Security Tint |
| Recommended Uses For Product | Cash, Invitation Card, Letter, Seed |
| Material Type | Paper |
| Brand | Postmaster |
| Material | Paper |
Who Should Buy?
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Businesses
Ideal for companies sending bulk documents, ensuring professional presentation and easy visibility of addresses.
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Schools & Colleges
Perfect for educational institutions distributing newsletters or reports, promoting a tidy appearance with self-sealing convenience.
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Event Planners
Great for event organizers mailing tickets and invitations, offering a secure and neat way to deliver information.
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Home Users
Not suitable for personal use as bulk packs may exceed individual mailing needs and create unnecessary storage issues.
Product Description
Postmaster C5 Window Envelopes 229 x 162 mm A5 90 GSM Self Seal White Bulk Business Pack of 500
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Customer Questions & Answers
-
Question:
What size documents do these envelopes hold?
Answer: They can hold A4 paper folded in half or A5 paper unfolded. -
Question:
How do I seal these envelopes?
Answer: They feature a self-seal design, which means you just press the flap down to close. -
Question:
Are these envelopes environmentally friendly?
Answer: Yes, they are PEFC-certified, indicating sustainable forest management.
Postmaster Envelopes Editorial Review
** Postmaster C5 Window Envelopes 229 x 162 mm A5 90 GSM Self Seal White 500 Pack** The Postmaster C5 Window Envelopes have garnered a favorable reception among customers, primarily due to their practicality, quality, and self-seal feature. Many users have noted that the envelopes are well-sized for A5 documents, making them an ideal choice for businesses and personal mailings alike. The clear window enables an easy view of the contents, which is particularly appreciated in professional settings where visibility of the recipient's address is essential. Quality is a recurring theme in customer feedback, with users highlighting the 90 GSM paper weight as robust yet flexible enough for a variety of mailing needs. The self-seal function adds convenience, eliminating the need for additional adhesive and allowing for quick and efficient packing. This feature, combined with the quantity of 500 envelopes per pack, makes the Postmaster C5 an economical choice for bulk mailing. However, a few customers have mentioned that while the envelopes are generally reliable, there were isolated reports of occasional inConsistencies in adhesion strength, particularly under high humidity. Nevertheless, the overwhelming Consensus remains that these envelopes are a reliable and cost-effective option for anyone in need of quality mailing solutions. **
Customer Reviews & Ratings
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Pros
- Well-sized for A5 documents
- Clear window for easy visibility of contents
- Made from quality 90 GSM paper
- Self-seal feature for added convenience
- Economical bulk pack of 500 envelopes
Cons
- Occasional inConsistencies in adhesion strength noted by some users
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
USD 35
Order now and get it around Wednesday, October 07
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- Pack of 500 versatile C5 envelopes for A4 or A5 documents.
- Ensures privacy with an opaque blue interior design.
- PEFC-certified for environmentally sustainable practices.
- Features self-sealing for quick, hygienic closure.
- Manufactured in the UK with high-quality 90GSM paper.
- Ideal for both large organizations and home-based businesses.
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Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.