When i entered the USA in March i got a text about adding unlimited text and talk for 10 days for a flat fee. all i had to do was reply a specific code back to the txt to enable it. How do i get this again when i visit the USA again next month?
That plan no longer exists. A few months ago, koodo introduced their easyroam plan, which allows you to use your existing minutes, data and texting for $7/day. If you don't use your phone you don't get charged. You also have the option of using koodo's pay per use rates, which would charge you $5 for a block of 100 texts, up until the end of the billing cycle. Incoming texts are always free.