Mailkit email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), Mailkit is the email service provider (ESP) for 200 domains — 0.03% of 637,420 SPF-publishing domains. Its strongest TLD is .cz (51.5% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-24 DNS snapshot.
What Mailkit represents in this dataset
Mailkit — Czech enterprise email marketing.
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 Mailkit
Across 33 distinct TLDs its top three are .cz (51.5%), .sk (12.0%), .com (5.0%) — together 68.5% of the 200 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Microsoft 365 (Mailbox, 66 domains, 33.0% of them), followed by Google Workspace (20.0%). 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 Mailkit
What else the same 200 domains use — cross-tabulated from the same daily snapshot (2026-09-24).
| Type | Service | Domains | Share of Mailkit users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 66 | 33.0% |
| Mailbox | Google Workspace | 40 | 20.0% |
| Mailbox | Unknown / Other | 20 | 10.0% |
| Mailbox | Self-Hosted | 16 | 8.0% |
| Mailbox | FORPSI (Internet CZ) | 11 | 5.5% |
| Mailbox | Generic / unmatched (mx*.*) | 11 | 5.5% |
| ESP | Heureka Mailing (CZ) | 17 | 8.5% |
| ESP | Mailchimp | 12 | 6.0% |
| ESP | Amazon SES | 10 | 5.0% |
| ESP | SparkPost | 8 | 4.0% |
TLD distribution (top 30 of 33)
Frequently asked questions
How many domains use Mailkit?
200 domains in the Tranco top-1M use Mailkit as their email service provider (ESP) as of September 24, 2026, according to Live Direct Marketing's daily DNS scan.
What is Mailkit's market share?
Mailkit 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 Mailkit?
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 200 domains.