The provided source material focuses exclusively on the mythological and fictional representations of the Japanese deity Izanami, primarily within Shinto tradition and the Persona video game series. This information does not contain any details regarding free samples, promotional offers, no-cost product trials, brand freebies, or mail-in sample programs. Consequently, it is not possible to write an article on the requested topic using the supplied data. The sources describe Izanami as a primordial goddess in Shinto religion, who, with Izanagi, created the islands of Japan and gave birth to numerous other kami. The material also details her death, descent into the underworld (Yomi), and her transformation into the goddess of the dead.
In the context of the Persona series, specifically Persona 4, Izanami appears as a central antagonist. She operates from the shadows, manipulating events and characters, and is ultimately revealed to be the force behind the mysterious Midnight Channel and the fog covering the town. Her true form is a rotting, death-ridden being, and she is defeated by the protagonist who channels the power of his Social Links. The sources also note her appearance as a gas station attendant and her role in other Persona titles like Innocent Sin and Shin Megami Tensei NINE.
Given the constraints of the task, which requires writing about consumer freebies and samples, and the lack of relevant information in the provided sources, a comprehensive article on that subject cannot be produced. The available data is solely mythological and fictional, with no connection to marketing, promotions, or product samples.