Use of temporary email addresses for registration/comments and messages is one of the attributes of spam.
What’s wrong with using temporary email addresses? You will never be able to contact this customer and your marketing will not work. If this user forgets login/pass he will never be able to restore them.
CleanTalk Anti-Spam has added a new parameter that considers of using a temp email in posts and these email will have an additional spam score. We don’t use a strong filtration for these emails, there must be more than one of the spam parameters.
Temporary email addresses – one of the attributes of spam
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