According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Masiv is the email service provider (ESP) for 130 domains — 0.02% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Masiv is an email service provider identified in mail infrastructure analysis through its SPF authorisation include directives. Little public information is available about its operational scope or ownership structure, but its distributed deployment across diverse organisations suggests a role as a smaller-scale or regionally-focused email service rather than a central platform.
Its footprint—concentrated in the long tail of smaller websites, internationally spread with a significant presence under .co domains, and frequently paired with Microsoft 365 in the same sender policies—indicates Masiv operates as a supplementary email layer. For senders and deliverability engineers, this pattern means Masiv may represent a secondary or targeted email function rather than a primary platform, and its presence in SPF records should be validated and monitored as part of a multi-provider sender authentication strategy.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 1 | 0.8% |
| Top 100,000 | 24 | 18.5% |
| Top 1,000,000 | 99 | 76.2% |
| Unranked | 6 | 4.6% |
| TLD | Domains | Share | |
|---|---|---|---|
| .co | 40 | 30.8% | |
| .com | 39 | 30.0% | |
| .com.co | 34 | 26.2% | |
| .cl | 6 | 4.6% | |
| .pe | 4 | 3.1% | |
| .com.pe | 3 | 2.3% | |
| .bet | 1 | 0.8% | |
| .org | 1 | 0.8% | |
| .coop | 1 | 0.8% | |
| .city | 1 | 0.8% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 130 domains.
| Type | Service | Domains | Share of Masiv users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 68 | 52.3% |
| Mailbox | Google Workspace | 23 | 17.7% |
| Mailbox | Trend Micro | 5 | 3.8% |
| Mailbox | Proofpoint | 5 | 3.8% |
| Mailbox | CSC (corporate) | 4 | 3.1% |
| Mailbox | Unknown / Other | 4 | 3.1% |
| ESP | SendClean | 87 | 66.9% |
| ESP | Amazon SES | 26 | 20.0% |
| ESP | Mailjet (Sinch) | 17 | 13.1% |
| ESP | Salesforce | 9 | 6.9% |
Masiv frequently appears in SPF records alongside Microsoft 365 authorisation, indicating that many organisations segment their email services across multiple providers—often directing transactional or regional email to Masiv whilst maintaining corporate communications via Microsoft. This dual-provider pattern introduces complexity in reputation assessment, as mail servers must correctly attribute messages to each provider and maintain distinct authentication chains; misconfiguration between SPF scopes, MX records, and service boundaries can result in deliverability friction or authentication failures.
See the full Masiv data page (KPI cards, trend, sample domains) →
Masiv operates primarily across smaller and mid-market organisations rather than the largest global brands, making it a lower priority for most email optimisation efforts. However, its international reach and frequent coexistence with Microsoft 365 mean it may warrant attention if your sender or recipient base specifically engages those segments.
130 domains in the Tranco top-1M use Masiv as their email service provider (ESP) as of July 13, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Masiv 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.
Masiv's largest TLD is .co (30.8% of its domains); it appears across 10 TLDs in total.