AdEspresso might be a bit more popular than NotificationX. We know about 1 link to it since March 2021 and only 1 link to NotificationX. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
This plugin. https://notificationx.com/ however never used it. Source: about 3 years ago
Right now I'm using services like Chatfuel.com and Adexpresso with FB ads, however, my conversions aren't great and I've gotten banned a handful of times. Twitter and Linkedin ads have also been hit and miss. I've also signed up for a couple of beta releases of ad networks on the blockchain (Primelabs, et al.). So on the waitlist for those. Source: over 2 years ago
Nudgify - Nudgify is a Social Proof App that includes FOMO, Urgency and Review Nudges. Adding Social Proof notifications to your site helps you build trust and increase conversions on Shopify, Wordpress or any other platform.
Madgicx - Ad performance beyond human limits
ProofGain - Supercharge your conversions with a simple social proof tool
Smartly.io - Smartly.io is the leading Facebook ad optimization solution for agencies and performance marketers
SocialProofy.io - Social Proofy is a marketing platform that applies the psychological concept called social proof to help businesses.
Reveal Bot - Manage your Facebook & Instagram ad campaigns from Slack