Mail Forwarding?

Before we switched to a full-time mail forwarding service for all of our mail, we would have the USPS temporarily forward our mail to our daughter while we were traveling. One issue we ran into a few times, were updated credit cards being mailed to us in "Do Not Forward" envelopes that the USPS would then return to the sender. That usually resulted in the card being canceled with no notice to us until we tried to use the existing card that was still a month or so from its expiration date. Fortunately, we had other cards we could use, but it was still embarrassing when the first card was rejected. That doesn't happen when a commercial mail service, technically a "remailer" rather than a "forwarder", packages up your mail and sends it on to you of course.