Apologies if this is the wrong thread, but it's the most active one re: US passports.

Both Mrs. Lee and I need to renew our passports and will be doing so via mail. I will need expedited service on mine but she will not.

Can we still mail them both in together? IIRC the last time we renewed, I put each application/photo/expiring book/payment into a manila envelope and then put the two envelopes into a priority mail flat rate to save on postage.

But back then we were both just doing standard processing so everything was going to the same place. For this time, could I pop them both in a single mailing to the Expedited address, and then trust that they'll separate off Mrs. Lee's standard application once it gets there?