Bolt - Free Email Validation - Bolt is a simple, free API that validates emails using AI.
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Put a stop to fake accounts with Bolt. Powered by AI, we validate whether or not an email actually exists to block fake signups, all wrapped into a simple API. To top it off, Bolt is FREE for makers! We'll validate up to 2000 emails a month totally free.
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Still playing with it, very good so far.
Pros:-Very generous free tier -Works great
Cons:-Not clear what factors into deliverability score