Hosted Email (Rackspace/IONOS) email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 5, 2026), Hosted Email (Rackspace/IONOS) is the mailbox provider for 1,830 domains — 0.27% of 666,937 domains with MX records. Its strongest TLD is .com (66.2% of its domains). Detection: primary MX record (lowest preference).
Last updated from the 2026-09-05 DNS snapshot.
What Hosted Email (Rackspace/IONOS) represents in this dataset
Rackspace Webmail / IONOS shared platform.
Directory category: Mailbox. The classification comes from primary MX record (lowest preference). It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-05 snapshot shows about Hosted Email (Rackspace/IONOS)
Across 98 distinct TLDs its top three are .com (66.2%), .net (6.4%), .org (4.2%) — together 76.8% of the 1,830 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 Wild West Domains Forwarder (ESP, 91 domains, 5.0% of them), followed by Amazon SES (3.0%). Directly comparable by the same detection rule: Self-Hosted, Google Workspace, Microsoft 365. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-05); a domain appears here when its published records match the primary MX record (lowest preference) rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Hosted Email (Rackspace/IONOS)
What else the same 1,830 domains use — cross-tabulated from the same daily snapshot (2026-09-05).
| Type | Service | Domains | Share of Hosted Email (Rackspace/IONOS) users |
|---|---|---|---|
| ESP | Wild West Domains Forwarder | 91 | 5.0% |
| ESP | Amazon SES | 55 | 3.0% |
| ESP | Mailgun | 55 | 3.0% |
| ESP | Mailchimp | 21 | 1.1% |
| ESP | SendGrid (Twilio) | 20 | 1.1% |
| ESP | MailerSend | 20 | 1.1% |
| ESP | Zendesk | 19 | 1.0% |
| ESP | Mandrill | 18 | 1.0% |
| ESP | Campaign Monitor | 9 | 0.5% |
| ESP | HubSpot | 9 | 0.5% |
TLD distribution (top 30 of 98)
Frequently asked questions
How many domains use Hosted Email (Rackspace/IONOS)?
1,830 domains in the Tranco top-1M use Hosted Email (Rackspace/IONOS) as their mailbox provider as of September 5, 2026, according to Live Direct Marketing's daily DNS scan.
What is Hosted Email (Rackspace/IONOS)'s market share?
Hosted Email (Rackspace/IONOS) holds 0.27% of domains with MX records in the Tranco top-1M (snapshot of 2026-09-05). The number is recomputed every day.
What are the biggest alternatives to Hosted Email (Rackspace/IONOS)?
The largest mailbox providers in the same category by Tranco top-1M share are: Self-Hosted, Google Workspace, Microsoft 365, Unknown / Other, Generic / unmatched (mx*.*) (as of 2026-09-05).
Largest mailbox providers in this category
Self-Hosted (22.62%) · Google Workspace (21.64%) · Microsoft 365 (16.80%) · Unknown / Other (6.84%) · Generic / unmatched (mx*.*) (2.58%) · Proofpoint (1.89%) · Generic / unmatched (mail.*) (1.78%) · Cloudflare Email Routing (1.72%) · Yandex 360 (1.60%) · Mimecast (1.46%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 1,830 domains.