To apply a postmark on.

A marking made by a postal service on a letter, package, postcard or the like, usually indicating the place where and the date and time when the item was received or processed for the first time, and often serving to cancel a postage stamp.

simple past tense and past participle of postmark

present participle of postmark

plural of postmark

Third-person singular simple present indicative form of postmark

(business) Subsequent to the release of a product on the market

After the release of a product onto the market.