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Important: IMPORTANT INFORMATION FOR CUSTOMERS AFFECTED BY THE FLOODING IN EASTERN ONTARIO, QUEBEC AND NEW BRUNSWICK. Read the details.

Machineable Envelopes

Standard (STD)

Standard (STD) mail is often used for general business correspondence, customer loyalty program information, and promotional letters and brochures.

These are envelopes or self-mailers that conform to the dimensions outlined below.

Dimensions Length Width Thickness L to W Ratio Weight
MIN 140 mm
(5.6 in)
90 mm
(3.6 in)
0.18 mm
(0.007 in)
1.3 2 g
(0.07 oz)
MAX 245 mm
(9.6 in)
156 mm
(6.1 in)
5 mm
(0.2 in)
2.6 50 g
(1.75 oz)

Oversize (O/S)

Oversize (O/S) Mail is often used for mailing larger, heavier or thicker items, like booklets, catalogues, media disks, annual reports, and product samples

This is a category of mail that conforms to the dimensions outlined below.

Dimensions Length Width Thickness Weight
MIN 140 mm
(5.6 in)
90 mm
(3.6 in)
0.5 mm
(0.02 in)
10 g
(0.4 oz)
MAX 380 mm
(14.9 in)
270 mm
(10.6 in)
20 mm
(0.8 in)
500 g
(17.6 oz)
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