Martian Cow is a UK greeting card brand offering personalised cards for birthdays, anniversaries, thank-yous, congratulations, new babies, love and other occasions. Customers can add a name to the front and a personal message inside, with cards printed in the UK on thick 350gsm card and supplied with a premium envelope. Each card also includes a complimentary original song: customers share three details about the recipient and choose a musical style, and Martian Cow writes and records a 30-second song that can be played by scanning a QR code on the card.

Cards start at £3.99, with large-format cards also available. Orders placed by 9pm can be sent for next-day delivery using Royal Mail Tracked 24, and customers can choose to have their card posted to themselves or directly to the recipient. Martian Cow also sells gifts to pair with cards, including drinks, chocolates, flowers, hampers, candles, beauty products, balloons and toys. The brand combines traditional printed greetings with a personalised musical surprise.