MailUp email provider statistics and deliverability context
← Email Stats homeesp
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), MailUp is the email service provider (ESP) for 1,474 domains — 0.23% of 637,420 SPF-publishing domains. Its strongest TLD is .it (53.4% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What MailUp represents in this dataset
Italian marketing automation, enterprise B2C.
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 MailUp
Across 53 distinct TLDs its top three are .it (53.4%), .com (26.9%), .net (2.5%) — together 82.8% of the 1,474 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, 478 domains, 32.4% of them), followed by Google Workspace (23.6%). 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 MailUp
What else the same 1,474 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of MailUp users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 478 | 32.4% |
| Mailbox | Google Workspace | 348 | 23.6% |
| Mailbox | Self-Hosted | 261 | 17.7% |
| Mailbox | Unknown / Other | 128 | 8.7% |
| Mailbox | Generic / unmatched (mx*.*) | 48 | 3.3% |
| Mailbox | Proofpoint | 35 | 2.4% |
| ESP | Amazon SES | 173 | 11.7% |
| ESP | Zendesk | 107 | 7.3% |
| ESP | Mailchimp | 77 | 5.2% |
| ESP | SendGrid (Twilio) | 76 | 5.2% |
TLD distribution (top 30 of 53)
Frequently asked questions
How many domains use MailUp?
1,474 domains in the Tranco top-1M use MailUp as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is MailUp's market share?
MailUp holds 0.23% 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 MailUp?
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 1,474 domains.