Intelliprint

Mailing & production

Choosing an envelope or postcard size

Intelliprint supports four letter envelope formats and three postcard formats, each with a different maximum sheet count. Here's how to pick and set one.

Last reviewed · By Intelliprint Team

Set the envelope or postcard format for a print job with postage.ideal_envelope. If you don't set one, letters default to c5.

Node.js
const printJob = await ip.prints.create({
  postage: {
    ideal_envelope: 'c5' // c5, c4, c4_plus, a4_box, postcard_a6, postcard_a5, postcard_a5_enveloped
  },
  // ...other print job properties
})

Letter envelope sizes

  • c5 — up to 15 sheets (folded in half); compatible with every postage service except Tracked 24 and Tracked 48. This is the default.
  • c4 — up to 50 sheets; compatible with every postage service.
  • c4_plus — up to 250 sheets; compatible with every postage service.
  • a4_box — up to 1,800 sheets; compatible with every postage service.

Good to know: if a letter uses more sheets than the chosen envelope can hold, Intelliprint automatically upgrades it to an envelope that can.

Postcard sizes

  • postcard_a6 — 105 × 148mm. This is the default.
  • postcard_a5 — 148 × 210mm.
  • postcard_a5_enveloped — 148 × 210mm, sent inside an envelope.

See the full parameter reference in the developer docs.

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