Pepipost (Netcore) email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 22, 2026), Pepipost (Netcore) is the email service provider (ESP) for 71 domains — 0.01% of 637,585 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 71 domains in the Tranco top-1M use Pepipost (Netcore) (0.01% of SPF-publishing domains).
- Snapshot date: 2026-09-22 — recomputed every day.
- Strongest TLD: .com (46.5% of its domains).
- Most co-used service: Google Workspace.
- Directory category: email service provider.
Why Pepipost (Netcore) appears in this category
Pepipost — transactional email API by Netcore Cloud.
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.
Pepipost, now part of Netcore (a cloud communications platform), is an email service provider that delivers transactional and marketing messages for businesses. The platform serves as an outbound SMTP relay and marketing automation tool, enabling organisations to send messages at scale through its infrastructure.
Pepipost's presence in the email ecosystem is most visible among smaller and mid-market organisations rather than enterprise brands; it appears widely across international domains, particularly .com, and is frequently paired with Google Workspace deployments. For email administrators and security teams, this distribution pattern means SPF lookups may regularly encounter Pepipost include mechanisms, and authentication checking should account for its servers when auditing sender verification chains.
Where Pepipost (Netcore) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 4 | 5.6% |
| Top 1,000,000 | 67 | 94.4% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 33 | 46.5% | |
| .in | 4 | 5.6% | |
| .org | 3 | 4.2% | |
| .eu | 3 | 4.2% | |
| .co.uk | 2 | 2.8% | |
| .be | 2 | 2.8% | |
| .de | 2 | 2.8% | |
| .ma | 2 | 2.8% | |
| .fr | 2 | 2.8% | |
| .it | 2 | 2.8% |
What Pepipost (Netcore) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 71 domains.
| Type | Service | Domains | Share of Pepipost (Netcore) users |
|---|---|---|---|
| Mailbox | Google Workspace | 26 | 36.6% |
| Mailbox | Self-Hosted | 11 | 15.5% |
| Mailbox | Microsoft 365 | 10 | 14.1% |
| Mailbox | OVH Mail | 6 | 8.5% |
| Mailbox | Zoho Mail | 4 | 5.6% |
| Mailbox | Generic / unmatched (mail.*) | 2 | 2.8% |
| ESP | Mandrill | 21 | 29.6% |
| ESP | Mailgun | 8 | 11.3% |
| ESP | Amazon SES | 7 | 9.9% |
| ESP | Elastic Email | 6 | 8.5% |
Authentication footprint and SPF include chains
Pepipost's presence in SPF records—often appearing as an include mechanism in the DNS authentication chains of its customers—creates a dependency point in mail flow verification. When a sender uses Pepipost, receiving mail servers must resolve and validate that include during SPF checks, adding a layer to the authentication lookup chain. This is particularly relevant for organisations running their own mail filtering or managing strict SPF policy enforcement, as any misconfiguration or DNS resolution delay involving Pepipost's SPF records can affect delivery of messages from its customers.
See the full Pepipost (Netcore) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
What is Pepipost and should I test email against it?
Pepipost is an SMTP relay and email service provider now owned by Netcore; you encounter it in email infrastructure when a sender uses its platform for transactional or marketing email delivery. If you operate a mail receiver or manage SPF validation, you may see Pepipost's servers referenced in sender SPF records, making it a standard part of the modern email authentication landscape.
How many domains use Pepipost (Netcore)?
71 domains in the Tranco top-1M use Pepipost (Netcore) as their email service provider (ESP) as of September 22, 2026 (0.01% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Pepipost (Netcore) common enough to affect email deliverability testing?
Pepipost (Netcore) accounts for 0.01% 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 Pepipost (Netcore) most?
Pepipost (Netcore)'s largest TLD is .com (46.5% of its domains); it appears across 26 TLDs in total.