Salsa Labs email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Salsa Labs is the email service provider (ESP) for 214 domains — 0.03% of 637,420 SPF-publishing domains. Its strongest TLD is .org (76.6% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Salsa Labs represents in this dataset
Salsa Labs — nonprofit advocacy + email engagement.
Directory category: Esp. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-24 snapshot shows about Salsa Labs
Across 5 distinct TLDs its top three are .org (76.6%), .com (19.2%), .net (1.9%) — together 97.7% of the 214 domains, which makes the footprint narrow — three TLDs cover most of it, which is typical of a regional or single-market operator. The service most often observed on the same domains is Google Workspace (Mailbox, 111 domains, 51.9% of them), followed by Microsoft 365 (31.3%). Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-24); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Salsa Labs
What else the same 214 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Salsa Labs users |
|---|---|---|---|
| Mailbox | Google Workspace | 111 | 51.9% |
| Mailbox | Microsoft 365 | 67 | 31.3% |
| Mailbox | Proofpoint Essentials | 9 | 4.2% |
| Mailbox | Mimecast | 5 | 2.3% |
| Mailbox | Unknown / Other | 4 | 1.9% |
| Mailbox | Self-Hosted | 4 | 1.9% |
| ESP | NGP VAN | 64 | 29.9% |
| ESP | MailChannels | 34 | 15.9% |
| ESP | SendGrid (Twilio) | 27 | 12.6% |
| ESP | Mailchimp | 24 | 11.2% |
TLD distribution (top 5 of 5)
Frequently asked questions
How many domains use Salsa Labs?
214 domains in the Tranco top-1M use Salsa Labs as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Salsa Labs's market share?
Salsa Labs holds 0.03% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-24). The number is recomputed every day.
What are the biggest alternatives to Salsa Labs?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mailchimp (as of 2026-09-24).
Largest email service provider (ESP)s in this category
Amazon SES (6.23%) · SendGrid (Twilio) (4.68%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.61%) · Mandrill (3.26%) · HubSpot (3.18%) · Salesforce (2.57%) · Mailjet (Sinch) (2.14%) · Cloudflare Email Routing (1.96%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 214 domains.