Polliwog Post Polliwog Post is a subscription that sends activity cards and stickers. Check out our March 2018 review! Subscription Box Reviews April 2018 Monthly Subscription Boxes / Subscription Box Reviews / Polliwog Post Reviews / Australian Subscription Box Reviews / Canadian Subscription Box Reviews / Greeting Card Subscription Reviews / International Subscription Box Reviews / Kids Subscription Box Reviews / UK Subscription Box Reviews / Polliwog Post