Emma email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), Emma is the email service provider (ESP) for 692 domains — 0.11% of 629,828 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 692 domains in the Tranco top-1M use Emma (0.11% of SPF-publishing domains).
- Snapshot date: 2026-09-12 — recomputed every day.
- Strongest TLD: .com (47.3% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: email service provider.
Why Emma appears in this category
US SMB+mid-market newsletter platform (CM Group).
We classify it as a email service provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Emma is an email service provider (ESP) that handles marketing and transactional email campaigns for organisations of various sizes. It operates as a cloud-based platform providing message delivery, automation, and analytics infrastructure.
Emma's footprint in global email infrastructure is concentrated among smaller and mid-market websites, predominantly within the .com domain, and frequently appears in environments also using Microsoft 365. For email professionals and mail handlers, recognising Emma in sender authentication records contributes to comprehensive understanding of email infrastructure and sender authentication patterns.
Where Emma sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.1% |
| Top 10,000 | 7 | 1.0% |
| Top 100,000 | 93 | 13.4% |
| Top 1,000,000 | 589 | 85.1% |
| Unranked | 2 | 0.3% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 327 | 47.3% | |
| .org | 180 | 26.0% | |
| .edu | 126 | 18.2% | |
| .net | 26 | 3.8% | |
| .gov | 14 | 2.0% | |
| .ca | 2 | 0.3% | |
| .co.uk | 2 | 0.3% | |
| .us | 2 | 0.3% | |
| .com.au | 2 | 0.3% | |
| .team | 1 | 0.1% |
What Emma users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 692 domains.
| Type | Service | Domains | Share of Emma users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 334 | 48.3% |
| Mailbox | Google Workspace | 127 | 18.4% |
| Mailbox | Mimecast | 42 | 6.1% |
| Mailbox | Proofpoint | 40 | 5.8% |
| Mailbox | Unknown / Other | 35 | 5.1% |
| Mailbox | Barracuda | 33 | 4.8% |
| ESP | SendGrid (Twilio) | 103 | 14.9% |
| ESP | Salesforce | 100 | 14.5% |
| ESP | Amazon SES | 91 | 13.2% |
| ESP | Mailchimp | 57 | 8.2% |
Emma SPF Mechanisms and Email Authentication
Organisations using Emma include the platform's SPF mechanisms in their sender policy records to authorise outbound email transmission. Mail handlers and filtering systems recognise these authorisation patterns during standard authentication assessment. Understanding Emma's role in SPF records is useful for deliverability professionals investigating sender authentication setup, troubleshooting authentication issues, or analysing the email infrastructure landscape of organisations using the platform.
See the full Emma data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is Emma in email infrastructure?
Emma is an email service provider that enables organisations to send marketing and transactional campaigns. It appears in sender SPF records as an authorised sending platform and is recognised by mail handlers as part of standard email authentication practices.
How many domains use Emma?
692 domains in the Tranco top-1M use Emma as their email service provider (ESP) as of September 12, 2026 (0.11% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Emma common enough to affect email deliverability testing?
Emma accounts for 0.11% 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.
Which countries or TLDs use Emma most?
Emma's largest TLD is .com (47.3% of its domains); it appears across 20 TLDs in total.