Hello Exp223,

Make sure that you have imput all the information for your Box and Lettermail in Sellonline Canadapost correctly.

Remember that Lettermail Height is 2cm and under.

Make sure that the Max weight in Admin is 500g/0.500kg or under.

Watch your decimal spaces:

5g/0.005kg
8g/0.008kg
10g/0.010kg

Take a look again.

Enable CanadaPost Shipping
True

Enable Lettermail Rates
True

Max weight for Lettermail
0.500

Table rates for Canada
0.030:0.54,0.050:0.98,0.100:1.18,0.200:1.96, 0.500:2.75

Table rates for USA
0.200:3.40, 0.500:6.80

Table rates for International
0.200:6.80, 0.500:13.60


In Sellonline Canada Post Examples:

Lettermail_Service_1:

Weight Limit is: 500g/0.500kg
Lettermail weight is: 30g/0.030kg
Length: 25cm
Width: 16cm
Height: 2cm


Kraft_Box_24:

Weight Limit is: 5kg
Box weight is: 340g/0.340kg
Length: 42cm
Width: 31cm
Height: 16cm