Acumbamail (ES) email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 18, 2026), Acumbamail (ES) is the email service provider (ESP) for 264 domains — 0.04% of 637,944 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 264 domains in the Tranco top-1M use Acumbamail (ES) (0.04% of SPF-publishing domains).
- Snapshot date: 2026-09-18 — recomputed every day.
- Strongest TLD: .com (53.4% of its domains).
- Most co-used service: Google Workspace.
- Directory category: email service provider.
Why Acumbamail (ES) appears in this category
Spanish SMB email marketing platform.
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.
Acumbamail is a Spanish email service provider focused on marketing campaigns and transactional email, detected across the web primarily through its SPF include mechanisms. It operates as a long-tail email infrastructure vendor, providing sending capacity and email management to businesses that publish it alongside their primary email authentication records.
Its footprint pattern — concentrated in smaller sites rather than major brands, predominantly .com domains, and most often paired with Google Workspace — signals a customer base of small and medium-sized businesses combining Google's email hosting with Acumbamail's sending capabilities. For deliverability engineers and senders targeting or monitoring this segment, Acumbamail's presence in SPF records indicates multi-vendor email infrastructure worth tracking during authentication audits and reputation assessment.
Where Acumbamail (ES) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 3 | 1.1% |
| Top 100,000 | 31 | 11.7% |
| Top 1,000,000 | 224 | 84.8% |
| Unranked | 6 | 2.3% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 141 | 53.4% | |
| .es | 64 | 24.2% | |
| .org | 10 | 3.8% | |
| .de | 5 | 1.9% | |
| .cat | 5 | 1.9% | |
| .net | 4 | 1.5% | |
| .io | 4 | 1.5% | |
| .co | 3 | 1.1% | |
| .it | 3 | 1.1% | |
| .pt | 2 | 0.8% |
What Acumbamail (ES) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 264 domains.
| Type | Service | Domains | Share of Acumbamail (ES) users |
|---|---|---|---|
| Mailbox | Google Workspace | 75 | 28.4% |
| Mailbox | Microsoft 365 | 63 | 23.9% |
| Mailbox | Self-Hosted | 62 | 23.5% |
| Mailbox | Unknown / Other | 17 | 6.4% |
| Mailbox | Generic / unmatched (mx*.*) | 11 | 4.2% |
| Mailbox | Amazon SES (inbound) | 6 | 2.3% |
| ESP | Amazon SES | 32 | 12.1% |
| ESP | Mailjet (Sinch) | 23 | 8.7% |
| ESP | Zendesk | 19 | 7.2% |
| ESP | Mandrill | 18 | 6.8% |
Google Workspace and multi-vendor authentication
Acumbamail frequently appears in SPF configurations alongside Google Workspace, a pattern typical of organisations using Google for hosted email and Acumbamail for marketing or transactional sends. This combination requires careful SPF management to avoid authentication conflicts; organisations publishing both must ensure include statements are ordered correctly and that downstream reputation (warm-up, bounce handling, complaint rates) is managed separately for each vendor's sending volume. For delivery professionals auditing such infrastructure, this pairing merits explicit testing for DMARC alignment and SPF flattening risk.
See the full Acumbamail (ES) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Should I test my email deliverability against Acumbamail?
Acumbamail is used by smaller businesses for transactional and marketing email, so testing against its infrastructure is relevant if you target that segment; however, it is not a major inbox provider where you need to build separate sender reputation.
How many domains use Acumbamail (ES)?
264 domains in the Tranco top-1M use Acumbamail (ES) as their email service provider (ESP) as of September 18, 2026 (0.04% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Acumbamail (ES) common enough to affect email deliverability testing?
Acumbamail (ES) accounts for 0.04% 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 Acumbamail (ES) most?
Acumbamail (ES)'s largest TLD is .com (53.4% of its domains); it appears across 30 TLDs in total.