This is a reminder that not all Capital One portal offers are the same. Let’s take a quick example and I’ll rank them from best to worst (usually):
Very rarely, the “Events” tab will have the best offer. This was a Tmobile $375 offer versus any other method yielded $250.

The “Exclusive Offers” filter usually has the 2nd best offers.

Product searches are usually 3rd best.

Then we have the email offers at 4th best

Then we have the home page’s “Product you viewed” as well as “Exclusive Deals” which usually yield decent offers, but in this case you can see it’s inferior to email.

I think in order: you want to see if there are any ‘Exclusive Offers’ first. If the retailer isn’t there, then search for a product that’ll link you to the site. If that doesn’t work, then browse that site and have the extension on. Wait for the email offer.