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Single‑piece rate and card rate First‑Class Mail may be deposited into any collection box, mail chute, or mail receptacle or at any place where mail is accepted if the full required postage is paid with adhesive stamps. Metered mail must be deposited in locations under the jurisdiction of the licensing post office, except as permitted under 604.4.0, Postage Meters (Postage Evidencing Systems), and 604.5.0, PC Postage. Permit imprint mail must be presented at a post office under 604.6.0, Permit Imprint (Indicia), or 705, Advanced Preparation and Special Postage Payment Systems. [D100.2.1]