Squarespace SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Squarespace is the SaaS sender for 120 domains — 0.02% of 637,420 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 120 domains in the Tranco top-1M use Squarespace (0.02% of SPF-publishing domains).
- Snapshot date: 2026-09-24 — recomputed every day.
- Strongest TLD: .com (68.3% of its domains).
- Most co-used service: Google Workspace.
- Directory category: uncatalogued service.
Why Squarespace appears in this category
Squarespace is currently catalogued from its observed DNS role.
We classify it as a uncatalogued service 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.
Squarespace is a website builder and content management platform that enables small businesses and independent creators to build, host, and manage websites without coding expertise. The platform includes integrated email capabilities, allowing site owners to send transactional and marketing email on behalf of their registered domains without managing mail infrastructure separately.
Squarespace's email footprint is concentrated amongst smaller websites in the .com domain space and frequently appears alongside Google Workspace. For email senders and receivers, this means SPF include mechanisms pointing to Squarespace are a common authentication pattern on small publisher domains. Deliverability professionals observing this pattern should recognise shared IP reputation: multiple unrelated customers' sending behaviour overlaps on the same infrastructure, meaning one customer's poor practices can affect inbox placement for others using the platform.
Where Squarespace sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 1 | 0.8% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 10 | 8.3% |
| Top 1,000,000 | 109 | 90.8% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 82 | 68.3% | |
| .org | 12 | 10.0% | |
| .edu | 5 | 4.2% | |
| .net | 4 | 3.3% | |
| .co.uk | 3 | 2.5% | |
| .io | 2 | 1.7% | |
| .shop | 1 | 0.8% | |
| .vc | 1 | 0.8% | |
| .ee | 1 | 0.8% | |
| .com.au | 1 | 0.8% |
What Squarespace users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 120 domains.
| Type | Service | Domains | Share of Squarespace users |
|---|---|---|---|
| Mailbox | Google Workspace | 76 | 63.3% |
| Mailbox | Microsoft 365 | 25 | 20.8% |
| Mailbox | Cisco IronPort | 3 | 2.5% |
| Mailbox | Self-Hosted | 3 | 2.5% |
| Mailbox | Mimecast | 3 | 2.5% |
| Mailbox | Unknown / Other | 2 | 1.7% |
Shared IP reputation and SPF authentication
When a Squarespace customer enables email, their domain owner adds an SPF include directive to DNS records, authorising Squarespace's infrastructure to send mail on the domain's behalf. Because Squarespace serves heterogeneous customers without centralised reputation filtering, both high-quality transactional mail and lower-engagement marketing may originate from shared IP ranges. This shared reputation pool means that poor sending practices by one customer—such as low engagement rates or spam complaints—can reduce inbox placement for other Squarespace-authenticated senders, creating a deliverability risk individual senders cannot unilaterally control.
See the full Squarespace 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
Why do I see Squarespace in the SPF records of small websites?
Squarespace adds SPF include directives to customers' domain records to authenticate email sent through its platform. This allows site owners to send email without operating mail infrastructure independently.
How many domains use Squarespace?
120 domains in the Tranco top-1M use Squarespace as their SaaS sender as of September 24, 2026 (0.02% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is Squarespace common enough to affect email deliverability testing?
Squarespace 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.
Which countries or TLDs use Squarespace most?
Squarespace's largest TLD is .com (68.3% of its domains); it appears across 18 TLDs in total.