SMTP2GO email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 13, 2026), SMTP2GO is the email service provider (ESP) for 1,210 domains — 0.19% of 628,913 SPF-publishing domains. Its strongest TLD is .com (50.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-13 DNS snapshot.
What SMTP2GO represents in this dataset
New Zealand transactional email service.
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 2026-09-13 snapshot shows about SMTP2GO
Across 103 distinct TLDs its top three are .com (50.2%), .org (6.0%), .co.uk (4.0%) — together 60.3% of the 1,210 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, 485 domains, 40.1% of them), followed by Google Workspace (16.4%). 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 (2026-09-13); 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 SMTP2GO
What else the same 1,210 domains use — cross-tabulated from the same daily snapshot (2026-09-13).
| Type | Service | Domains | Share of SMTP2GO users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 485 | 40.1% |
| Mailbox | Google Workspace | 198 | 16.4% |
| Mailbox | Self-Hosted | 161 | 13.3% |
| Mailbox | Unknown / Other | 84 | 6.9% |
| Mailbox | Mimecast | 52 | 4.3% |
| Mailbox | Proofpoint | 29 | 2.4% |
| ESP | Mailchimp | 130 | 10.7% |
| ESP | SendGrid (Twilio) | 122 | 10.1% |
| ESP | Amazon SES | 119 | 9.8% |
| ESP | Mandrill | 97 | 8.0% |
TLD distribution (top 30 of 103)
Frequently asked questions
How many domains use SMTP2GO?
1,210 domains in the Tranco top-1M use SMTP2GO as their email service provider (ESP) as of September 13, 2026, according to Live Direct Marketing's daily DNS scan.
What is SMTP2GO's market share?
SMTP2GO holds 0.19% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-13). The number is recomputed every day.
What are the biggest alternatives to SMTP2GO?
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 2026-09-13).
Largest email service provider (ESP)s in this category
Amazon SES (6.19%) · SendGrid (Twilio) (4.64%) · Mailgun (4.01%) · Zendesk (3.77%) · Mailchimp (3.57%) · Mandrill (3.25%) · HubSpot (3.12%) · Salesforce (2.55%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.95%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 1,210 domains.