Google Workspace mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 16, 2026), Google Workspace is the mailbox provider for 145,379 domains — 21.63% of 672,143 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 145,379 domains in the Tranco top-1M use Google Workspace (21.63% of domains with MX records).
- Snapshot date: 2026-09-16 — recomputed every day.
- 30-day share change: +0.04 pp.
- Strongest TLD: .com (52.3% of its domains).
- Region skew: Global / US-skewed.
- Most co-used service: Amazon SES.
- Directory category: mailbox provider.
Why Google Workspace appears in this category
Google Workspace (formerly G Suite) — corporate mail backed by Gmail. Dominant for SMB and mid-market globally.
We classify it as a mailbox provider from primary MX record (lowest preference) matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Google Workspace is Google's managed email and productivity platform for organisations. Google operates it as part of its enterprise offering, providing hosted email domains for companies, non-profits, and institutions of all sizes.
Analysis of primary MX records shows Workspace concentrated in the long tail—smaller and mid-market organisations rather than the largest global brands—with a pronounced .com dominance and US/Global regional concentration. Notably, Workspace frequently appears alongside Amazon SES, indicating a common pattern where organisations host email in Workspace but relay outbound sending through SES. This infrastructure arrangement is significant because it creates distinct authentication and filtering touchpoints that deliverability professionals must navigate.
Where Google Workspace sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 231 | 0.2% |
| Top 10,000 | 2,194 | 1.5% |
| Top 100,000 | 17,978 | 12.4% |
| Top 1,000,000 | 123,976 | 85.3% |
| Unranked | 1,000 | 0.7% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 75,965 | 52.3% | |
| .org | 6,915 | 4.8% | |
| .net | 4,278 | 2.9% | |
| .io | 3,714 | 2.6% | |
| .com.br | 3,235 | 2.2% | |
| .in | 2,581 | 1.8% | |
| .co | 1,988 | 1.4% | |
| .co.uk | 1,971 | 1.4% | |
| .ai | 1,951 | 1.3% | |
| .de | 1,615 | 1.1% |
What Google Workspace users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 145,379 domains.
| Type | Service | Domains | Share of Google Workspace users |
|---|---|---|---|
| ESP | Amazon SES | 14,666 | 10.1% |
| ESP | SendGrid (Twilio) | 11,570 | 8.0% |
| ESP | Zendesk | 11,108 | 7.6% |
| ESP | HubSpot | 9,665 | 6.6% |
| ESP | Mailgun | 9,459 | 6.5% |
| ESP | Mailchimp | 8,936 | 6.1% |
| ESP | Mandrill | 8,304 | 5.7% |
| ESP | Salesforce | 4,245 | 2.9% |
| ESP | Mailjet (Sinch) | 3,431 | 2.4% |
| ESP | Brevo (ex-Sendinblue) | 2,872 | 2.0% |
Authentication and relay requirements with Amazon SES
When organisations use Google Workspace for inbound mailbox hosting whilst sending through Amazon SES, emails traverse two separate infrastructure providers' authentication and filtering systems. SES applies its own sender reputation and authentication checks; Workspace then applies Google's strict inbound filtering and DMARC enforcement when the mail arrives. Proper SPF, DKIM, and DMARC configuration becomes critical because emails must satisfy both SES's sending requirements and Workspace's receiving standards—a misconfiguration that passes one may still be rejected or filtered by the other.
See the full Google Workspace data page (KPI cards, trend, sample domains) →
Run a free inbox-placement test across Gmail, Outlook, Yahoo and more — see exactly where your mail lands and why.
Frequently asked questions
Do I need to test emails in Google Workspace?
Yes. Workspace's presence in the long tail of smaller organisations and its strict inbound filtering make it worth testing against, particularly if your audience skews towards .com-registered businesses.
How many domains use Google Workspace?
145,379 domains in the Tranco top-1M use Google Workspace as their mailbox provider as of September 16, 2026 (21.63% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is Google Workspace common enough to affect email deliverability testing?
Google Workspace accounts for 21.63% of domains with MX records in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Is Google Workspace growing or declining?
Google Workspace is growing — its share moved +0.04 pp over the last 30 days (as of September 16, 2026).
Which countries or TLDs use Google Workspace most?
Google Workspace's largest TLD is .com (52.3% of its domains); it appears across 637 TLDs in total.