Which form of mail allows for a weight of up to 70 pounds?

Parcel Post is the correct form of mail that allows for a weight of up to 70 pounds. This service is intended for sending packages and is designed to accommodate heavier and larger items. With Parcel Post, businesses and individuals can send a vast variety of goods that exceed the weight limits of standard envelopes or lighter packages.

Understanding the weight limits is crucial for proper mailing procedures, and Parcel Post offers the flexibility to ship significant quantities or bulky items. This makes it an essential option for those needing to send packages that are heavier than what other mailing services accommodate. In contrast, other mail types, such as Standard Mail, Media Mail, and Library Mail, are restricted by lower weight limits, making them unsuitable for heavier merchandise.