Envelopes

Envelopes from AOS Online

Envelopes are one of the most basic yet crucial office supplies. Whether you’re posting documents, sending invitations, dispatching orders, or organising internal mail, the right envelope makes a difference. At AOS Online, our Envelopes category gives you plenty of choice in size, style, material and purpose — all designed to protect contents, look professional and deliver great value.

What You’ll Find

White envelopes in a range of sizes (C3, C4, C5, C6, DL, B4, etc.), with options for windowed fronts for address visibility
Manilla and coloured envelopes to help with branding, categorisation or visual differentiation
Padded envelopes, bubble-lined postal bags, and Jiffy brands for items needing extra protection in transit
Wallet and window envelopes, gusset and padded gusset styles, polythene or plastic-free mailing options
High-weight paper stock (like 90-120gsm) for a premium feel, plus lighter weights for everyday use
Large pack quantities for offices, schools or high-volume needs, as well as smaller packs for everyday use
Recycled or eco-friendly options such as “5 Star Eco” recycled envelopes

Key Benefits

Presents a neat, professional image for outgoing mail or packages
Protects contents — from letters to small items — against damage and weather
Offers flexibility in format to match different mailing and record-keeping needs
Bulk packs and larger volume options reduce per-unit cost for frequent users

Common Questions Customers Often Ask

Which envelope size should I choose?
Check the size of the document or item. If it fits into DL, C5 or C4, choose the closest envelope type that allows some clearance. Bigger items will need larger formats like B4 or C3.

What difference does weight (gsm) make?
Higher gsm paper feels more substantial, resists tearing and conveys quality. Lighter weights are fine for regular mail but might look less professional.

Do window envelopes cause issues with printing?
Not if they’re correctly designed. Envelopes with windows make sender and recipient addresses clearly visible without needing to write directly.

Are padded or bubble-lined mailers necessary?
They are essential for fragile, irregular or heavier items, or when mailing via couriers with rough handling.

Can I get environmentally friendly options?
Yes. There are recycled and paper-based options among the range to help reduce plastic use and environmental impact.

Choosing Envelopes that Suit Your Needs

Decide what you need based on content type, protection level, presentation and budget. Match size to contents, weight to purpose (everyday vs premium), style (windowed, coloured, padded), and quantity to usage. Bulk orders and multipacks provide savings. At AOS Online you’ll find reliable delivery, helpful options, and envelopes that align with both function and appearance.