Echobox SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 17, 2026), Echobox is the SaaS sender for 130 domains — 0.02% of 635,547 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 130 domains in the Tranco top-1M use Echobox (0.02% of SPF-publishing domains).
- Snapshot date: 2026-09-17 — recomputed every day.
- Strongest TLD: .no (35.4% of its domains).
- Most co-used service: Unknown / Other.
- Directory category: SaaS sender.
Why Echobox appears in this category
Echobox — AI-driven publishing tool for media.
We classify it as a SaaS sender 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.
Echobox is a software-as-a-service email platform that sends mail on behalf of client domains. It integrates with a domain's email infrastructure via SPF include mechanisms.
Echobox's footprint in SPF records is concentrated amongst smaller and mid-market sites rather than enterprise brands, and geographically spread across international domains with notable concentration in Norway (.no). It frequently appears alongside unknown or unclassified sender types, indicating a diverse customer base across different vertical markets and geographies.
Where Echobox sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.8% |
| Top 10,000 | 3 | 2.3% |
| Top 100,000 | 38 | 29.2% |
| Top 1,000,000 | 88 | 67.7% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .no | 46 | 35.4% | |
| .com | 37 | 28.5% | |
| .nl | 10 | 7.7% | |
| .se | 6 | 4.6% | |
| .fr | 4 | 3.1% | |
| .es | 4 | 3.1% | |
| .cl | 3 | 2.3% | |
| .com.br | 2 | 1.5% | |
| .media | 2 | 1.5% | |
| .pl | 1 | 0.8% |
What Echobox users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 130 domains.
| Type | Service | Domains | Share of Echobox users |
|---|---|---|---|
| Mailbox | Unknown / Other | 46 | 35.4% |
| Mailbox | Google Workspace | 37 | 28.5% |
| Mailbox | Microsoft 365 | 34 | 26.2% |
| Mailbox | Self-Hosted | 7 | 5.4% |
| Mailbox | United Domains (DE) | 1 | 0.8% |
| Mailbox | Mimecast | 1 | 0.8% |
SPF delegation and shared infrastructure risk
When a domain authorises Echobox to send mail on its behalf, it publishes an SPF include pointing to Echobox's mail server IP ranges. This delegation simplifies the sender's SPF record but ties the domain's email reputation to Echobox's operational practices and IP management. Receiving mailbox providers evaluate Echobox-sourced mail against the customer domain's sending patterns; poor list hygiene or abuse by one Echobox customer can affect shared IP pools, making Echobox's infrastructure and compliance practices relevant to any domain using it.
See the full Echobox data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is Echobox?
Echobox is a third-party email service provider that sends mail on behalf of client domains via outbound infrastructure. It appears in email authentication records as an SPF include mechanism.
How many domains use Echobox?
130 domains in the Tranco top-1M use Echobox as their SaaS sender as of September 17, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Echobox common enough to affect email deliverability testing?
Echobox accounts for 0.02% 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 Echobox most?
Echobox's largest TLD is .no (35.4% of its domains); it appears across 25 TLDs in total.