Jellyfish (Namecheap) mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), Jellyfish (Namecheap) is the mailbox provider for 2,897 domains — 0.44% of 665,310 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 2,897 domains in the Tranco top-1M use Jellyfish (Namecheap) (0.44% of domains with MX records).
- Snapshot date: 2026-09-12 — recomputed every day.
- 30-day share change: -0.01 pp.
- Strongest TLD: .shop (37.3% of its domains).
- Region skew: Global.
- Most co-used service: Namecheap Forwarding.
- Directory category: hosting mail bundle.
Why Jellyfish (Namecheap) appears in this category
Namecheap internal cluster name (jellyfish.systems).
We classify it as a hosting mail bundle from primary MX record (lowest preference) matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Jellyfish is Namecheap's managed mailbox platform, operated by Namecheap, a major domain registrar and web hosting provider. It is offered as a bundled email service for Namecheap-registered domains.
Jellyfish's footprint sits predominantly in the long tail of smaller websites rather than large enterprises or flagship brands. Its MX presence spans globally across multiple TLDs, with notable concentration on .shop domains. For senders, this means Jellyfish inboxes represent a distributed, heterogeneous audience; for recipients, any filtering or reputation policies Namecheap implements apply broadly across its customer base.
Where Jellyfish (Namecheap) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.0% |
| Top 10,000 | 4 | 0.1% |
| Top 100,000 | 52 | 1.8% |
| Top 1,000,000 | 2,827 | 97.6% |
| Unranked | 13 | 0.4% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .shop | 1,081 | 37.3% | |
| .com | 924 | 31.9% | |
| .org | 76 | 2.6% | |
| .net | 73 | 2.5% | |
| .xyz | 67 | 2.3% | |
| .online | 52 | 1.8% | |
| .in | 46 | 1.6% | |
| .site | 41 | 1.4% | |
| .store | 26 | 0.9% | |
| .pk | 26 | 0.9% |
What Jellyfish (Namecheap) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 2,897 domains.
| Type | Service | Domains | Share of Jellyfish (Namecheap) users |
|---|---|---|---|
| ESP | Namecheap Forwarding | 11 | 0.4% |
| ESP | Mailgun | 6 | 0.2% |
| ESP | Mailjet (Sinch) | 5 | 0.2% |
| ESP | IPzMarketing | 3 | 0.1% |
| ESP | Elastic Email | 3 | 0.1% |
| ESP | Cloudflare Email Routing | 3 | 0.1% |
| ESP | MailerSend | 2 | 0.1% |
| ESP | Amazon SES | 2 | 0.1% |
| ESP | SendGrid (Twilio) | 2 | 0.1% |
| ESP | Turbo-SMTP | 2 | 0.1% |
Coupling with Namecheap Forwarding
Jellyfish is frequently paired with Namecheap Forwarding in the MX records of smaller registrant sites. This bundling reflects shared infrastructure or contract terms, meaning mail destined for a Jellyfish inbox may also be subject to Namecheap Forwarding policies and reputation signals. Senders should expect this coupling when troubleshooting delivery to Namecheap-hosted domains.
See the full Jellyfish (Namecheap) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Should I test my email against Jellyfish?
If your audience includes Namecheap-registered sites, particularly .shop domains, testing against Jellyfish inboxes is sensible. However, focus on Tier-1 providers first given Jellyfish's position in the long tail.
How many domains use Jellyfish (Namecheap)?
2,897 domains in the Tranco top-1M use Jellyfish (Namecheap) as their mailbox provider as of September 12, 2026 (0.44% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is Jellyfish (Namecheap) common enough to affect email deliverability testing?
Jellyfish (Namecheap) accounts for 0.44% of domains with MX records 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.
Is Jellyfish (Namecheap) growing or declining?
Jellyfish (Namecheap) is declining — its share moved -0.01 pp over the last 30 days (as of September 12, 2026).
Which countries or TLDs use Jellyfish (Namecheap) most?
Jellyfish (Namecheap)'s largest TLD is .shop (37.3% of its domains); it appears across 141 TLDs in total.