Based on our record, Postscript should be more popular than Fonoster. It has been mentiond 2 times since March 2021. 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.
There's a service that's open source for full on features if that helps, here it is: https://fonoster.com/. Source: 10 months ago
I work for this company: https://postscript.io/. Source: over 1 year ago
Postscript is one example, raised 100m+ and are basically an SMS marketing tool for shopify stores lol. https://postscript.io. Source: almost 2 years ago
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