Each Lettermail™ item must meet our size and weight specifications.

There are two main categories of Lettermail that determine how much it will cost to send your item:

• Standard Lettermail (50 g or less)
• Other (Non-standard and Oversize) Lettermail (0 g to 500 g)

Minimum dimensions for all items are 140 mm x 90 mm x 0.18 m m (5.6 inches x 3.6 inches x 0.007 inches).

If your letter is larger than the maximum dimensions below, you must use our Parcel Services.

Use a single stamp for items that are in the standard weight and size range.

Minimum weight for:

• Standard - 2 g

Maximum dimensions

• 245 mm x 156 mm x 5 mm (9.6 inches x 6.1 inches x 0.2 inches)

Oversize or Non-standard size envelopes and postcards will cost you more (see Prices).

Minimum weight for:

• Non-standard - 3 g
• Oversize - 5 g

Maximum dimensions

• 380 mm x 270 mm x 20 mm (14.9 inches x 10.6 inches x 0.8 inches)
• Any item that exceeds the maximum size or weight of Non-standard and Oversize Lettermail no longer qualifies as Lettermail