Based on our record, SendSimple.app seems to be more popular. It has been mentiond 1 time 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.
So I created sendsimple.app which helps send email from google sheet give it a try and let me know what you think of it. Source: about 2 years ago
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