The best alternatives to Email Spam Words API are Unspam.email, Autoklose, and TheRightMargin. If these 3 options don't work for you, we've listed a few more alternatives below.
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Unspam.email is an online spam tester tool for emails. Improve your deliverability with the free email tester. The service analyzes the main aspects of an email and returns a spam score and predicts results with a heat map of your email newsletter.
Autoklose is a time-saving sales automation software for every stage of the funnel. Automate your way through the sales process and close more deals faster.
AnonAddy is an open-source anonymous email forwarding service that protects your real email address from spam by using a different unique email alias for every website. It creates unlimited aliases for free. Encrypt forwarded emails with PGP encryption using this service.