Zoho ZeptoMail email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 10, 2026), Zoho ZeptoMail is the email service provider (ESP) for 2,549 domains — 0.40% of 632,322 SPF-publishing domains. Over the last 30 days its share declined by 0.02 pp. Its strongest TLD is .com (59.7% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-10 DNS snapshot.
What Zoho ZeptoMail represents in this dataset
Zoho transactional email API (transmail.net / zoho-mail.com).
Directory category: Esp. 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 2026-09-10 snapshot shows about Zoho ZeptoMail
Across 165 distinct TLDs its top three are .com (59.7%), .org (3.4%), .in (2.9%) — together 66.0% of the 2,549 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Google Workspace (Mailbox, 1,047 domains, 41.1% of them), followed by Microsoft 365 (33.7%). Its share of SPF-publishing domains moved -0.02 pp in 30 days — inside the daily noise of list rotation. 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 (2026-09-10); 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 Zoho ZeptoMail
What else the same 2,549 domains use — cross-tabulated from the same daily snapshot (2026-09-10).
| Type | Service | Domains | Share of Zoho ZeptoMail users |
|---|---|---|---|
| Mailbox | Google Workspace | 1,047 | 41.1% |
| Mailbox | Microsoft 365 | 858 | 33.7% |
| Mailbox | Self-Hosted | 126 | 4.9% |
| Mailbox | Zoho Mail | 93 | 3.6% |
| Mailbox | Unknown / Other | 68 | 2.7% |
| Mailbox | Mimecast | 45 | 1.8% |
| ESP | Zoho Campaigns | 763 | 29.9% |
| ESP | Amazon SES | 443 | 17.4% |
| ESP | Zoho Mail 360 | 314 | 12.3% |
| ESP | SendGrid (Twilio) | 277 | 10.9% |
TLD distribution (top 30 of 165)
Frequently asked questions
How many domains use Zoho ZeptoMail?
2,549 domains in the Tranco top-1M use Zoho ZeptoMail as their email service provider (ESP) as of September 10, 2026, according to Live Direct Marketing's daily DNS scan.
What is Zoho ZeptoMail's market share?
Zoho ZeptoMail holds 0.40% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-10). The number is recomputed every day.
Is Zoho ZeptoMail growing or declining?
Zoho ZeptoMail's share declined by 0.02 percentage points over the last 30 days (as of September 10, 2026).
What are the biggest alternatives to Zoho ZeptoMail?
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 2026-09-10).
Largest email service provider (ESP)s in this category
Amazon SES (6.15%) · SendGrid (Twilio) (4.62%) · Mailgun (4.00%) · Zendesk (3.75%) · Mailchimp (3.56%) · Mandrill (3.24%) · HubSpot (3.09%) · Salesforce (2.54%) · Mailjet (Sinch) (2.11%) · Cloudflare Email Routing (1.93%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 2,549 domains.