Act-On Software email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Act-On Software is the email service provider (ESP) for 448 domains — 0.07% of 637,420 SPF-publishing domains. Its strongest TLD is .com (74.3% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Act-On Software represents in this dataset
Act-On — mid-market marketing automation platform.
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 Act-On Software
Across 23 distinct TLDs its top three are .com (74.3%), .org (14.1%), .net (2.2%) — together 90.6% of the 448 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 Microsoft 365 (Mailbox, 220 domains, 49.1% of them), followed by Google Workspace (13.2%). 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 Act-On Software
What else the same 448 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Act-On Software users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 220 | 49.1% |
| Mailbox | Google Workspace | 59 | 13.2% |
| Mailbox | Mimecast | 52 | 11.6% |
| Mailbox | Proofpoint | 26 | 5.8% |
| Mailbox | Unknown / Other | 24 | 5.4% |
| Mailbox | Barracuda | 19 | 4.2% |
| ESP | Salesforce | 66 | 14.7% |
| ESP | SendGrid (Twilio) | 57 | 12.7% |
| ESP | Mimecast | 57 | 12.7% |
| ESP | Amazon SES | 48 | 10.7% |
TLD distribution (top 23 of 23)
Frequently asked questions
How many domains use Act-On Software?
448 domains in the Tranco top-1M use Act-On Software as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Act-On Software's market share?
Act-On Software holds 0.07% 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 Act-On Software?
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 448 domains.