A pager is a wireless telecommunications device that receives and displays numeric or text messages, or receives and announces voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknowledge, reply to, and originate messages using an internal transmitter.
Other Shipping Options. If you choose to ship via Priority Mail in something other than flat rate packaging, youâll pay a rate based on the weight of the package and the zone you are shipping to. You can use your own packaging or USPS non-flat-rate packaging, but the packages must be clearly marked as Priority Mail.
So before you send the next batch of letters, find out the main differences between First Class, Priority, and Certified mail. First Class Mail. If you're sending a letter or small package that weighs 13 ounces or less, First Class mail is the least expensive option. For this reason, many businesses opt for this service, whether they're sending bills, invoices, personal letters, cards or small parcels. This type of mail usually arrives within one to three days. Priority Mail