Email Verification by Provider
Learn how VeriMails handles verification for every major email provider. Understand SMTP behavior, catch-all detection, and what accuracy to expect.
Gmail
Gmail is the world's most popular email provider with over 1.8 billion users. Verifying Gmail addresses presents unique challenges because Google's SM...
Outlook and Microsoft 365
Microsoft handles billions of email addresses across Outlook.com (consumer), Microsoft 365 (business), and legacy Hotmail/Live domains. Each has diffe...
Yahoo Mail
Yahoo Mail remains one of the largest email providers globally. Verifying Yahoo addresses is generally straightforward compared to Gmail or Microsoft,...
ProtonMail
ProtonMail is the leading privacy-focused email provider based in Switzerland. Its commitment to privacy extends to SMTP-level behavior, which creates...
Zoho Mail
Zoho Mail is a popular business email provider, especially among small and medium businesses. Many companies use Zoho for their custom domain email, m...
Custom Business Domains
Most B2B email addresses use custom domains — contact@company.com rather than @gmail.com. Verifying custom domain addresses is the core use case for e...
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