YMLP email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 18, 2026), YMLP is the email service provider (ESP) for 162 domains — 0.03% of 637,944 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 162 domains in the Tranco top-1M use YMLP (0.03% of SPF-publishing domains).
- Snapshot date: 2026-09-18 — recomputed every day.
- Strongest TLD: .com (38.3% of its domains).
- Most co-used service: Microsoft 365.
- Directory category: email service provider.
Why YMLP appears in this category
Your Mailing List Provider — Belgian newsletter ESP.
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.
YMLP is an email service provider offering organisations the ability to send email through its infrastructure via SMTP and SPF authentication. It operates as a separate platform from major cloud email providers.
YMLP's user base is concentrated among smaller and mid-market organisations distributed across many countries and top-level domains, particularly .com. It is frequently deployed in environments also running Microsoft 365. For anyone evaluating email deliverability or sender reputation, YMLP's position in the long tail of smaller sites means its infrastructure reputation is built on aggregate sending quality across its diverse customer base rather than anchored by dominant enterprise brands.
Where YMLP 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 | 10 | 6.2% |
| Top 1,000,000 | 148 | 91.4% |
| Unranked | 4 | 2.5% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 62 | 38.3% | |
| .nl | 26 | 16.0% | |
| .be | 12 | 7.4% | |
| .org | 11 | 6.8% | |
| .fr | 10 | 6.2% | |
| .eu | 5 | 3.1% | |
| .es | 3 | 1.9% | |
| .ru | 2 | 1.2% | |
| .pt | 2 | 1.2% | |
| .gr | 2 | 1.2% |
What YMLP users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 162 domains.
| Type | Service | Domains | Share of YMLP users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 57 | 35.2% |
| Mailbox | Google Workspace | 43 | 26.5% |
| Mailbox | Self-Hosted | 24 | 14.8% |
| Mailbox | OVH Mail | 7 | 4.3% |
| Mailbox | Unknown / Other | 6 | 3.7% |
| Mailbox | Barracuda | 3 | 1.9% |
| ESP | Mailchimp | 18 | 11.1% |
| ESP | SendGrid (Twilio) | 15 | 9.3% |
| ESP | Mailgun | 14 | 8.6% |
| ESP | Mandrill | 10 | 6.2% |
Reputation and long-tail sender dynamics
YMLP's position as a smaller ESP means its senders share infrastructure-level reputation. ISPs evaluate mail from YMLP's servers based on aggregate sending patterns and abuse history across all customers, not solely the sender's domain reputation. Deliverability for individual YMLP senders therefore depends partly on the platform's overall authentication and compliance posture.
See the full YMLP data page (KPI cards, trend, sample domains) →
Run a free inbox-placement test across Gmail, Outlook, Yahoo and more — see exactly where your mail lands and why.
Frequently asked questions
What is YMLP, and should I test email deliverability against it?
YMLP is an email service provider used by smaller and mid-market organisations to send email, frequently deployed alongside Microsoft 365. Test against YMLP if your recipient base is likely to include its users.
How many domains use YMLP?
162 domains in the Tranco top-1M use YMLP as their email service provider (ESP) as of September 18, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is YMLP common enough to affect email deliverability testing?
YMLP accounts for 0.03% 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 YMLP most?
YMLP's largest TLD is .com (38.3% of its domains); it appears across 32 TLDs in total.