MailGuard email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), MailGuard is the email service provider (ESP) for 95 domains — 0.01% of 637,677 SPF-publishing domains. Its strongest TLD is .com.au (54.7% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-14 DNS snapshot.
What MailGuard represents in this dataset
MailGuard — Australian email security gateway.
Directory category: Gateway. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-14 snapshot shows about MailGuard
Across 12 distinct TLDs its top three are .com.au (54.7%), .com (17.9%), .au (13.7%) — together 86.3% of the 95 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Unknown / Other (Mailbox, 62 domains, 65.3% of them), followed by Microsoft 365 (25.3%). Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-14); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with MailGuard
What else the same 95 domains use — cross-tabulated from the same daily snapshot (2026-09-14).
| Type | Service | Domains | Share of MailGuard users |
|---|---|---|---|
| Mailbox | Unknown / Other | 62 | 65.3% |
| Mailbox | Microsoft 365 | 24 | 25.3% |
| Mailbox | Google Workspace | 3 | 3.2% |
| Mailbox | Sophos Email | 1 | 1.1% |
| Mailbox | Proofpoint | 1 | 1.1% |
| Mailbox | Proofpoint Essentials | 1 | 1.1% |
| ESP | Amazon SES | 17 | 17.9% |
| ESP | Mailchimp | 16 | 16.8% |
| ESP | Zendesk | 11 | 11.6% |
| ESP | SendGrid (Twilio) | 10 | 10.5% |
TLD distribution (top 12 of 12)
Frequently asked questions
How many domains use MailGuard?
95 domains in the Tranco top-1M use MailGuard as their email service provider (ESP) as of September 14, 2026, according to Live Direct Marketing's daily DNS scan.
What is MailGuard's market share?
MailGuard holds 0.01% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-14). The number is recomputed every day.
What are the biggest alternatives to MailGuard?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mailchimp (as of 2026-09-14).
Largest email service provider (ESP)s in this category
Amazon SES (6.16%) · SendGrid (Twilio) (4.62%) · Mailgun (4.00%) · Zendesk (3.75%) · Mailchimp (3.57%) · Mandrill (3.24%) · HubSpot (3.11%) · Salesforce (2.54%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.95%)
Domain sample (top 95 by Tranco rank)
Showing 95 of 95 domains.