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The right envelope for every shipping need The postal system in Germany looks back on over 530 years of history. As early as 1490, Emperor Maximilian I commissioned the Thurn und Taxis family to establish regular postal connections. And despite email, PDF, and digital data exchange, classic postal shipping remains an integral part of office life to this day. In short: DIN long with a window covers most business letters, DIN C4 is suitable for unfolded documents. Self-adhesive is the most convenient, and recycled paper envelopes are already standard in public institutions. This buying guide will help you with: Choosing the right format Optimizing postage usage Suitable material Avoiding wrong purchases Stocking sensible standards Table of Contents Question 1: Which format do I need? Question 2: Mailer with or without a window? Question 3: Which closure type is the right one? Question 4: Which material should I choose? Digression: Mailers for special requirements Question 5: How do I store envelopes correctly? Question 6: What postage does Deutsche Post charge? Our Tip: Stocking the most important envelopes Discover suitable mailers & envelopes now Question 1: Which format do I need? The most important decision when shipping is the correct format. 1. DIN Long (220 × 110 mm) & Compact (235 × 125 mm) The classic in everyday business. Suitable for: A4 documents folded twice A5 pages folded lengthwise Invoices and business letters DIN long is the standard envelope. Compact envelopes offer more space for more extensive contents. 2. DIN C6 (162 × 114 mm) Ideal for: A6 documents Greeting cards Invitations folded A4 or A5 sheets 3. DIN C5 (229 × 162 mm) and DIN B5 (250 × 176 mm) Perfect for: unfolded A5 single folded A4 high-quality mailings or greeting cards DIN B5 offers additional leeway for thicker contents. 4. DIN C4 (324 × 229 mm) and DIN B4 (353 × 250 mm) For shipping without creasing. Suitable for: unfolded A4 documents Applications Offer cards Presentation documents DIN B4 optimally utilizes the maximum letter dimensions and offers particularly a lot of space. Question 2: Mailers and envelopes with or without a window? Basically, many envelopes are available in both variants. With window Ideal for: Business letters Invoices Serial mailings Mass mailings The address appears directly through the window – no additional labeling is required. Without window Recommendation for: personal contribution data privacy sensitive content shipments with address labels marketing campaigns Question 3: Which closure type is the right one? Self-adhesive (peel-and-seal) particularly convenient strong adhesive power long shelf life ideal for confidential mail Peel – close – done. Self-sealing fast processing ideal for high consumption Suitable for inserting machines Gummed flap classic standard machine-processable economical for large shipping volumes Question 4: Which material should I choose? In addition to the format, the material determines stability and appearance. White wood-free paper large professional ideal for business letters Premium effect with high grammage Natural brown particularly stable Predominantly for mailers ideal for heavy contents Recycled paper (grey) resource-friendly sustainable increasingly popular with companies Suitable for private and business mail The proportion of recycled envelopes has been steadily increasing for years. While this material is per se prescribed for many authorities and public institutions, more and more companies are now opting for it as part of developing their sustainability strategies. Tip: Use our environmental filter to find sustainable shipping solutions. Mailers for special requirements Bubble mailers Protect sensitive contents with integrated bubble wrap. Ideal for: Electronics Spare parts Analytical small parts Note: Sizes are based on internal and external dimensions, not DIN standards. Gusseted Envelopes With side or bottom gussets for more volume. Suitable for: Catalogs Books Brochures Textiles Rigid Mailers Crease protection for flat contents. Perfect for: Documents Photos Certificates Magazines Tyvek® Shipping Envelopes Extremely robust special solution. Features: tear-resistant water-repellent very lightweight durable recyclable Ideal for valuable or important shipments. Question 5: How do I store envelopes correctly? To maintain adhesive and paper quality: Temperature: 18–20 °C Humidity: 50–55 % Storage: in the box, protected from dust Light: Avoid direct sunlight This way, envelopes remain usable for years. Question 6: What postage does Deutsche Post charge? Shipping costs depend on weight and dimensions. Your choice of envelope directly affects your shipping costs. Overview of German Letter Postage Product Weight Price Postcard – €0.95 Standard Letter up to 20 g €0.95 Compact Letter up to 50 g €1.10 Large Letter up to 500 g €1.80 Maxi Letter up to 1,000 g €2.90 Tip: You can easily order stamps directly from our shop. Our Tip: Stock up on the most important envelopes Many businesses operate optimally with a small basic stock: DIN long with window (business mail) DIN C4 shipping envelopes (documents unfolded) Bubble mailers (goods shipments) Recycled envelopes (sustainable shipping) This way, you are prepared for almost any shipping scenario. Further Wiepa Guides Buying Guide for Office Paper and Copy PaperOrganizing the Mailroom in the Office Discover suitable shipping envelopes & envelopes now Whether daily business mail or occasional shipping: In our shop you will find a large selection of immediately available envelopes, shipping envelopes and special solutions. Select shipping envelopes & envelopes now Note: If you want to link to a category page or search instead of a collection, simply replace the link.