domain report

Is mail3go.online a business email?

No. mail3go.online is a free email provider: one shared domain used by many unrelated people.

GET /v1/check?domain=mail3go.onlinechecked 18 Oct 2026
isBusinessEmail("mail3go.online")
false

Personal email on a shared provider (think Gmail, Outlook, Yahoo).

category
personal
recommendation
block
confidence
97%
  • Google Workspace: not detected
  • Microsoft 365: not detected

Mail setup

Receives mail
Yes
Mail provider
—
SPF
v=spf1 +a +mx -all
DMARC policy
None
MX records for mail3go.online
PriorityMX host
10mx1.mail3go.online
10mx2.mail3go.online

Workspace

  • Google WorkspaceNot detected
  • Microsoft 365Not detected

Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.

Why this verdict

Confidence 97% · recommendation block under the default b2b policy.

What this means

Anyone can open an inbox at mail3go.online, so an address there says nothing about the company the person works for. That makes it a personal email, even when someone uses it for work. It is on our free email providers list.

isBusinessEmail returns category "personal": block under the b2b and strict policies, allow under lenient. mail3go.online receives mail through mx1.mail3go.online, mx2.mail3go.online.

See the full free email providers list →

Questions about mail3go.online

Is mail3go.online a business email?

No. mail3go.online is a shared email provider, so isBusinessEmail classifies it as "personal". A business email uses a domain the company owns.

Is mail3go.online a free email provider?

Yes. mail3go.online hands out inboxes on its own domain to individuals, which is what makes an address there a personal email.

Should a B2B product accept mail3go.online sign-ups?

It depends on what you need. If you need a company tenant or a company to sell to, ask for a work email; if you only want real people, accept it. The b2b policy blocks personal addresses and the lenient policy allows them.

How can I tell mail3go.online apart from a company domain in code?

POST the address to /v1/check: shared providers come back with category "personal" and is_free_provider: true, company domains with category "business".

Learn more

Check another address or domain

check another

Checked over a POST request — nothing you type ends up in a URL or in analytics.