The security envelope is a type of envelope specifically designed to protect the privacy and security of letters and is widely used in banking, legal, business and personal communications. In order to prevent the contents of the letter from being peeked by the outside world, the inner layer of the security envelopes is usually printed with a light-proof confidentiality lining pattern. These complex geometric figures or text arrangements can effectively block the content of the letter. In order to further enhance security, the envelope security uses a variety of Sealing methods, such as self-adhesive seals, wet seals and tamper-evident tape, make letters less susceptible to improper opening during transport. In terms of materials, secure envelopes usually use high-quality tear-proof paper, which has excellent durability and can protect the integrity of the letter during delivery.

Sailingpaper secure envelope also support customized services. Users can choose different sizes, lining patterns, sealing methods according to needs, and can even print company logos to enhance the brand image and professionalism of the envelopes. Contact us to learn more!

Additional information

Product year	2024
Product manual	Included in the package
Refundable	Up to 14 days

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Size	USA	Europe	Others
XS	28-30	27-29	34-36
S	30-32	29-31	36-38
M	32-33	31-33	38-40
L	33-34	33-36	40-44
XL	34-38	36-40	44-48
XXL	38-48	40-44	48-50

FAQ

What payment methods do you accept?
We accept various payment methods, including credit/debit cards, PayPal, and bank transfers for your convenience.
Do you offer international shipping?
Yes, we offer international shipping to many countries. Please check our shipping information page for details on available destinations and shipping rates.
How can I track my order?
Once your order is shipped, you will receive a tracking number via email. You can use this number to track your package's delivery status on our website or through the courier's tracking portal.
What is your return policy?
We offer a hassle-free return policy. If you're not satisfied with your purchase for any reason, you can return it within 30 days for a full refund or exchange. Please refer to our returns page for detailed instructions.
Are your products covered by a warranty?
Yes, most of our products come with a manufacturer's warranty against defects in materials and workmanship. The duration and terms of the warranty vary by product, so please check the product description or contact our customer support team for specific details.

Shipping & Delivery

All estimated shipping times are in addition to fulfillment times, We offer a next working day delivery for orders placed before 6:30 p.m. Monday to Friday. Orders placed after this will be delivered within two working days. This excludes Saturday, Sunday and holidays. Appointed is not responsible for any customs/duties related to international orders. We are unable to calculate charges prior to your order being delivered, and recommend checking with your local customs office for more information. Shipping fees will not be refunded if you refuse these charges.

Free destination delivery above $100
Europe 1 – 3 days Free
United States 4 – 6 days Free
Asia 3 – 6 days Free
Africa 5 – 7 days Free
Australia 3 – 5 days Free

Returns & Refunds

We have a 14-day return policy, which means you have 14 days after receiving your item to request a return, To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging. You’ll also need the order confirmation, order number, or proof of purchase. We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Security Envelopes