Mailing
Part of speech: noun
Definition: An act of sending mail.
Part of speech: verb
Definition: (ditransitive) To send (a letter, parcel, etc.) through the mail.
Posting
Part of speech: verb
Definition: To hang (a notice) in a conspicuous manner for general review.
Part of speech: noun
Definition: action of the verb to postan item inserted into a register, ledger or diaryan entry in a computerized bulletin boardthe place where a soldier or airman is sent (posted) for duty; the time spent there
Example sentence: Through my Instagram, I'm always posting pictures of kitten fosters and if it inspires one person to go to his or her local shelter and adopt, it's worth it.