If you're not receiving emails from Zestworld, there's a few things you can do to troubleshoot:
1. Check your Spam folder
There's a chance our emails might have landed in your Spam folder. Take a peek inside and if they're in there, mark them as Not Spam so they're sure to land in your primary inbox.
2. Add zestworld.com to your email program's allow list.
Many email clients will allow you to whitelist domains that you want to be sure to receive emails from.
Give this a try if it is an option for your email client.