Which service is comparable to Priority Mail but is intended for heavy items?

Retail Ground is comparable to Priority Mail but is specifically designed for the shipment of heavier items. This option is particularly aimed at those items that require a lower-cost alternative to Priority Mail for packages that are not time-sensitive. Retail Ground offers a cost-effective way to send packages that may exceed the weight limits typically associated with other services, making it a practical choice for heavier shipments that don't require the speed of Priority Mail.

In contrast, Media Mail is specifically intended for books and educational materials, which would not be suitable for general heavy items. Parcel Select is primarily used for bulk shipping and requires specific packaging and handling requirements that may not fit all customer needs for heavy items. Global Express Guaranteed focuses on international shipping and ensures fast delivery worldwide, rather than catering to domestic heavy shipments. Thus, Retail Ground stands out as the most appropriate choice for sending heavy items domestically.