PSA said it has started a same-day mail service.

The carrier is offering same-day mail pickup and delivery service for companies with operations in Los Angeles and San Francisco. A Pacific Southwest Airlines spokesman described it as a “mailroom to mailroom” service in which PSA will pick up mail and packages at a firm’s office in one city and fly it to the other city on the same day. PSA’s service will use an independent fleet of trucks for local pickup and delivery.