Who Hosts My Email?

Instantly find out which email provider powers any domain. Enter an email address or domain name and we'll tell you exactly who hosts the email — Google Workspace, Microsoft 365, Zoho, or 150+ others.

Try:

How does it work?

1

Enter any email or domain

Type a full email address ([email protected]) or just the domain (company.com). We'll extract the domain automatically.

2

We query DNS records

Our engine looks up MX (mail exchange) and SPF records for the domain. These records reveal which email service handles mail delivery.

3

Get instant results

You'll see the exact email provider, whether it's a business or personal service, and a confidence score. Results are returned in under 50ms.

What you'll find out

Email hosting provider

The exact service hosting email for the domain — Google Workspace, Microsoft 365, Zoho, ProtonMail, self-hosted, and 150+ others.

Business vs personal

Whether the domain uses a business email service (like Google Workspace) or a free personal provider (like Gmail or Yahoo).

Disposable email detection

We check against 57,000+ known disposable/temporary email domains like Mailinator, Guerrilla Mail, and Temp Mail.

Custom domain detection

Find out if a company uses their own domain with a major provider — a strong signal of a legitimate business.

Providers we detect

Our database covers the most popular email hosting services worldwide:

✓ Google Workspace
✓ Microsoft 365
✓ Gmail
✓ Outlook.com
✓ Zoho Mail
✓ ProtonMail
✓ Fastmail
✓ Yahoo Mail
✓ OVH
✓ iCloud Mail
✓ Amazon SES
✓ Mimecast

...and 150+ more providers including regional and self-hosted solutions.

Frequently asked questions

How do I find out who hosts my email? ▼
Enter your domain name (e.g. company.com) in the tool above and click "Check host". We'll instantly tell you which email provider handles mail for that domain by analyzing its MX and SPF records.
Is this tool free? ▼
Yes, this tool is completely free to use with no signup required. For high-volume automated lookups, we offer a REST API starting at $0/month with 100 free requests.
Does this tool send any emails or contact the mail server? ▼
No. We only perform passive DNS lookups (MX and SPF records). We never contact the mail server, send test emails, or perform SMTP verification. This makes it safe, fast, and fully GDPR-compliant.
Can I check who hosts someone else's email? ▼
Yes. MX and SPF records are public DNS information. You can look up any domain to see which email provider it uses. This is commonly used in B2B sales to understand a prospect's tech stack.
What's the difference between this and email verification? ▼
Email verification checks if a specific mailbox exists (e.g. [email protected]) by probing the mail server. Our tool identifies which provider hosts the email (e.g. Google Workspace) using passive DNS only — without contacting the server.

Need to check email hosts at scale?

Our REST API lets you look up email providers programmatically. Get 100 free requests/month, or upgrade for batch processing, webhooks, and company enrichment.

Get Free API Key Read the docs