Cloudmersive Validate vs mailboxlayer

Part of Cloudmersive's unified API platform, this endpoint validates email addresses, phone numbers, VAT numbers, and domain names for syntax and deliverability under a single Apikey header. It shares the same 600-free-calls-per-month tier as Cloudmersive's other validation products in this catalog.

A REST service from APILayer that checks whether an email address is syntactically valid, resolves to real DNS/MX records, and flags free or disposable providers in one call. Free for light personal use, with paid tiers for higher volume.