Based on our record, Mailgun seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
One thing I will add is you do still need to signup for an SMTP server. I ended up using Mailgun, but there are many. Once you do that you'd plug in your creds to Firebase, and move forward with your setup. - Source: Reddit / 6 months ago
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