According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Transsmart is the SaaS sender for 137 domains — 0.02% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Transsmart is a SaaS platform that sends email on behalf of domains, commonly integrated into mail flows as an additional sender channel. It is identified in mail infrastructure by its presence in SPF include mechanisms, signalling domains that delegate outbound mail delivery (fully or partially) to the service.
Transsmart's footprint skews towards smaller and medium-sized operations rather than global enterprises, and is internationally distributed across many top-level domains with a concentration in .com. Its frequent co-occurrence with Microsoft 365 indicates that many organisations stack it alongside their primary email provider, a pattern relevant for deliverability professionals assessing reputation, authentication complexity, and sender authentication chains.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 6 | 4.4% |
| Top 1,000,000 | 118 | 86.1% |
| Unranked | 13 | 9.5% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 52 | 38.0% | |
| .nl | 47 | 34.3% | |
| .eu | 10 | 7.3% | |
| .de | 6 | 4.4% | |
| .be | 5 | 3.6% | |
| .fr | 3 | 2.2% | |
| .co.uk | 3 | 2.2% | |
| .it | 2 | 1.5% | |
| .es | 2 | 1.5% | |
| .hu | 1 | 0.7% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 137 domains.
| Type | Service | Domains | Share of Transsmart users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 96 | 70.1% |
| Mailbox | Google Workspace | 15 | 10.9% |
| Mailbox | Unknown / Other | 5 | 3.6% |
| Mailbox | Mimecast | 4 | 2.9% |
| Mailbox | Generic / unmatched (mx*.*) | 3 | 2.2% |
| Mailbox | Self-Hosted | 3 | 2.2% |
When Transsmart appears in a domain's SPF record, it represents an additional authorised sender channel in the mail flow. Domains that use both Microsoft 365 and Transsmart must list both in their SPF include chain, which can increase record complexity and occasionally trigger validation issues. Reputation is also fragmented: mail sent via Transsmart develops a separate sending history from mail sent via the primary provider, requiring receivers to evaluate Transsmart's IP space and sending practices independently.
See the full Transsmart data page (KPI cards, trend, sample domains) →
Transsmart is a third-party email delivery service; organisations authorise its IP ranges in their SPF record to send mail on their behalf. If a domain lists Transsmart in SPF, that domain uses it as part of its mail sending infrastructure.
137 domains in the Tranco top-1M use Transsmart as their SaaS sender as of July 13, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Transsmart accounts for 0.02% 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.
Transsmart's largest TLD is .com (38.0% of its domains); it appears across 16 TLDs in total.