Happy Birthday by Union Works

Definitely recommend it based on my experience so far.

Just installed Happy Birthday Email....couldn't have been easier. On the first morning we collected birth dates from customers through three different paths: our Shopify POS system in the physical shop, the online order confirmation page, and the landing page on our website. 8 down, 2000 to go! Haven't sent the Mailchimp announcing our Birthday Club yet but hoping that will drive hundreds through the landing page.

Defining the birthday gift offering was super easy and integrates seamlessly with the Shopify exclusive discount code feature. The Shopify POS integration is also really well done. Our staff got it immediately. Our shop is a community place for knitters and they drop by at any time even when they're not buying yarn. But we're using the POS order process with $0 to help them all join the club. That was easier than having the landing page open in another iPad app just for birth date entry.

You have to accept some delayed gratification because it will be months before we have metrics on how our "Club" is working for us but I'm optimistic and with "Happy Birthday Email"....the price is right!