According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Uhserver / Tucows shared is the mailbox provider for 183 domains — 0.03% of 658,711 domains with MX records. Detection method: primary MX record (lowest preference).
Uhserver is a shared email hosting service operated by Tucows, a longstanding provider of domain registration, web hosting, and email infrastructure. The service sits on shared mailbox infrastructure rather than dedicated hardware, making it a cost-effective choice for smaller and regional organisations.
Uhserver's footprint is concentrated in Brazil's .com.br space, where it hosts mail for a large number of smaller to mid-market websites rather than enterprises. Its prevalence—often appearing alongside SendGrid (owned by Twilio) in the same site's mail infrastructure—makes it a useful proxy for understanding regional email reception patterns in Portuguese-speaking markets and shared-hosting environments more broadly.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 8 | 4.4% |
| Top 1,000,000 | 139 | 76.0% |
| Unranked | 36 | 19.7% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com.br | 160 | 87.4% | |
| .br | 11 | 6.0% | |
| .com | 11 | 6.0% | |
| .club | 1 | 0.5% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 183 domains.
| Type | Service | Domains | Share of Uhserver / Tucows shared users |
|---|---|---|---|
| ESP | SendGrid (Twilio) | 15 | 8.2% |
| ESP | RD Station (BR) | 10 | 5.5% |
| ESP | Amazon SES | 3 | 1.6% |
| ESP | SpamExperts (AntiSpamCloud) | 3 | 1.6% |
| ESP | KMITD (TH) | 3 | 1.6% |
| ESP | Brevo (ex-Sendinblue) | 3 | 1.6% |
| ESP | MailerSend | 3 | 1.6% |
| ESP | SendPulse | 3 | 1.6% |
| ESP | Mailgun | 3 | 1.6% |
| ESP | Zoho Campaigns | 2 | 1.1% |
Uhserver's dominance in Brazil reflects broader patterns in regional web hosting: smaller organisations, local e-commerce sites, and regional service providers tend to cluster on shared infrastructure in their own market rather than migrate to global CDN-backed providers. For senders targeting Brazil or maintaining a mailbox on Uhserver's network, understanding its position in the shared-hosting ecosystem is relevant to assessing inbox placement in that region. Reputation on Uhserver mailboxes depends partly on the shared IP pool's overall sending patterns—meaning inbound filtering may reflect both sender behaviour and the broader reputation of Tucows' infrastructure.
See the full Uhserver / Tucows shared data page (KPI cards, trend, sample domains) →
Testing against Uhserver is worthwhile if your audience includes smaller organisations or Brazilian recipients, or if you send region-specific campaigns in Portuguese-speaking markets. Uhserver's shared infrastructure characteristics mean inbox filtering may differ from enterprise platforms like Google Workspace or Microsoft 365.
183 domains in the Tranco top-1M use Uhserver / Tucows shared as their mailbox provider as of July 13, 2026 (0.03% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Uhserver / Tucows shared accounts for 0.03% 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.
Uhserver / Tucows shared's largest TLD is .com.br (87.4% of its domains); it appears across 4 TLDs in total.