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Our DL Business Letter Envelopes are designed for professional mailing of invoices, official documents, notifications, and business correspondence. Widely used by offices, companies, and institutions, these envelopes provide a clean, secure, and reliable solution for everyday postal needs.
This category includes both window and non-window envelopes in a single range, allowing you to choose the most suitable option for your workflow. Window envelopes are ideal for automated mailing and address visibility, while plain envelopes offer a classic and confidential appearance.
All envelopes feature a self-seal (peel & seal) closure for fast, mess-free use and are manufactured from high-quality paper suitable for laser and inkjet printing. Available in white and manila paper options, they ensure professional presentation for all types of business mail.
DL Business Letter Envelopes are the international equivalent of what is commonly known as “diplomat envelopes”, making them the standard choice for commercial and official mailing across Europe and worldwide.
We operate various online platforms across Turkey, the United States, Europe, and the Far East. Since September 2025, our operations have been unified under Smart Life Products Limited, headquartered in Hong Kong. We own and operate a production facility in Istanbul, Türkiye, specializing in wedding invitations and packaging. All products are shipped from Türkiye and manufactured using environmentally friendly materials.
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