The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government monopoly, with a fee on the article prepaid. Proof of payment is usually in the form of an adhesive postage stamp, but a postage meter is also used for bulk mailing. Read more on Wikipedia
Mentions (normalised)
The number of mentions of the word mail normalised by the total items over a 30 day interval.
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Total Mentions
Total number of mentions of the word mail over a 30 day interval.
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