What type of mail is designated for sending postcards?

The type of mail specifically designated for sending postcards is postcard mail. This classification allows for the unique handling and pricing associated with sending postcards, which are typically lightweight and intended for brief messages or greetings. Postcard mail ensures that these items are processed more efficiently, with considerations for their size and format, allowing postal services to offer tailored rates for this specific type of correspondence.

Standard Mail generally covers bulk mailing of items such as advertisements and promotional materials but does not specifically address postcards. Express Mail is geared towards urgent deliveries with guaranteed next-day service, focusing on speed rather than format. Priority Mail offers a reliable option with expedited service but is for packages and letters that need to arrive quickly, rather than standardized postcard deliveries. Thus, postcard mail is the most accurate choice for sending postcards efficiently and effectively.