According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), Zoho Mail 360 is the email service provider (ESP) for 724 domains — 0.12% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Zoho Mail 360 is a hosted email service operated by Zoho Corporation, an Indian-founded software company. It provides email hosting, spam filtering, and message archiving for small to mid-market organisations seeking alternatives to or supplements for mainstream email providers.
SPF records across the web reveal Zoho Mail 360 appears predominantly on smaller websites rather than the largest enterprises, with particular concentration in .com domains. Its frequent co-occurrence with Microsoft 365 suggests many organisations use Zoho Mail 360 alongside rather than instead of other systems—a pattern that shapes authentication, routing, and deliverability outcomes for email sent to or from those domains.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.1% |
| Top 10,000 | 3 | 0.4% |
| Top 100,000 | 84 | 11.6% |
| Top 1,000,000 | 574 | 79.3% |
| Unranked | 62 | 8.6% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 433 | 59.8% | |
| .org | 40 | 5.5% | |
| .in | 21 | 2.9% | |
| .net | 19 | 2.6% | |
| .co.uk | 16 | 2.2% | |
| .gov | 16 | 2.2% | |
| .edu | 12 | 1.7% | |
| .ca | 11 | 1.5% | |
| .com.au | 11 | 1.5% | |
| .io | 7 | 1.0% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 724 domains.
| Type | Service | Domains | Share of Zoho Mail 360 users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 297 | 41.0% |
| Mailbox | Google Workspace | 144 | 19.9% |
| Mailbox | Unknown / Other | 66 | 9.1% |
| Mailbox | Mimecast | 49 | 6.8% |
| Mailbox | Self-Hosted | 29 | 4.0% |
| Mailbox | Proofpoint | 19 | 2.6% |
| ESP | Zoho ZeptoMail | 300 | 41.4% |
| ESP | Zoho Campaigns | 95 | 13.1% |
| ESP | Amazon SES | 93 | 12.8% |
| ESP | SendGrid (Twilio) | 83 | 11.5% |
When Zoho Mail 360 sits alongside Microsoft 365 in an organisation's SPF record, both services must be correctly authorised. Misalignment—failing to include Zoho's SPF mechanism when mail genuinely originates from Zoho—can cause authentication failures and deliverability loss. Organisations running both systems should audit their SPF policy to confirm both Office 365 and Zoho include mechanisms are present and ordered to avoid conflicts or policy violations.
See the full Zoho Mail 360 data page (KPI cards, trend, sample domains) →
If your recipients use Zoho Mail 360, your emails may face stricter spam filtering or authentication checks depending on the service's rules. More importantly for senders: if you are a Zoho Mail 360 customer, you must correctly configure SPF to include Zoho's mechanism—misconfiguration breaks authentication and causes delivery failures.
724 domains in the Tranco top-1M use Zoho Mail 360 as their email service provider (ESP) as of July 12, 2026 (0.12% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Zoho Mail 360 accounts for 0.12% of SPF-publishing domains 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.
Zoho Mail 360's largest TLD is .com (59.8% of its domains); it appears across 78 TLDs in total.