Im still new here, not totally sure where to post this.

Agreed to a trade with another member, swapped mailing info, he requested that I ship first as I have no feedback on here, which I was fine with and did. Mailed out my half of the trade on the 24th of September, provided tracking info on the same day. Now the cards are sitting at the post office waiting to be picked up by the other member and the last message I got from them was on the 23rd of September.

Suggestions on how to proceed?

First, this is the correct place to post this.

It looks like you've sent a message (or more than one) that hasn't been viewed by your trade partner. (This is indicated by the chat bubble next to the trade on his trades page) Also, he hasn't been online for 4 days. While this seems like a long time keep in mind that this is a hobby and everything else in our lives should take a higher priority. That is something I need to remind myself of from time to time as well.

I would send him an email. Point out that the tracking information shows that the cards are sitting at the post office. I assume this is through Canada Post which I don't know much about, but I would assume that the package would be returned to you if it doesn't get picked up after X number of days.

Either way this isn't particularly good communication or trade practice and your feedback once the trade is complete should probably reflect that.