ImprovMX email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), ImprovMX is the email service provider (ESP) for 795 domains — 0.12% of 637,420 SPF-publishing domains. Its strongest TLD is .com (51.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What ImprovMX represents in this dataset
Free email forwarding for custom domains.
Directory category: Forwarder. 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 ImprovMX
Across 128 distinct TLDs its top three are .com (51.2%), .org (6.0%), .net (5.9%) — together 63.1% of the 795 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is ImprovMX (forwarding) (Mailbox, 660 domains, 83.0% of them), followed by Google Workspace (9.3%). 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 ImprovMX
What else the same 795 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of ImprovMX users |
|---|---|---|---|
| Mailbox | ImprovMX (forwarding) | 660 | 83.0% |
| Mailbox | Google Workspace | 74 | 9.3% |
| Mailbox | Self-Hosted | 11 | 1.4% |
| Mailbox | Microsoft 365 | 8 | 1.0% |
| Mailbox | ProtonMail | 5 | 0.6% |
| Mailbox | Generic / unmatched (mx*.*) | 5 | 0.6% |
| ESP | Amazon SES | 52 | 6.5% |
| ESP | Mailgun | 40 | 5.0% |
| ESP | SendGrid (Twilio) | 28 | 3.5% |
| ESP | Mailjet (Sinch) | 26 | 3.3% |
TLD distribution (top 30 of 128)
Frequently asked questions
How many domains use ImprovMX?
795 domains in the Tranco top-1M use ImprovMX as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is ImprovMX's market share?
ImprovMX holds 0.12% 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 ImprovMX?
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 795 domains.