SMTP2GO email provider statistics and deliverability context

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According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), SMTP2GO is the email service provider (ESP) for 1,210 domains — 0.19% of 629,828 SPF-publishing domains. Its strongest TLD is .com (50.2% of its domains). Detection: include: mechanisms in the SPF record.

Last updated from the 2026-09-12 DNS snapshot.

1,210domains
0.19%of SPF-publishing domains
103distinct TLDs
2026-09-12snapshot (updated daily)

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 2026-09-12 snapshot shows about SMTP2GO

Across 103 distinct TLDs its top three are .com (50.2%), .org (6.0%), .co.uk (4.0%) — together 60.2% 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, 487 domains, 40.2% 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 (2026-09-12); 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 (2026-09-12).

TypeServiceDomainsShare of SMTP2GO users
MailboxMicrosoft 36548740.2%
MailboxGoogle Workspace19816.4%
MailboxSelf-Hosted15813.1%
MailboxUnknown / Other836.9%
MailboxMimecast524.3%
MailboxProofpoint292.4%
ESPMailchimp13010.7%
ESPSendGrid (Twilio)12210.1%
ESPAmazon SES1209.9%
ESPMandrill978.0%

TLD distribution (top 30 of 103)

com — 608 (50.2%)
org — 72 (6.0%)
co.uk — 49 (4.0%)
net — 47 (3.9%)
nl — 45 (3.7%)
com.au — 39 (3.2%)
ca — 25 (2.1%)
it — 25 (2.1%)
no — 16 (1.3%)
de — 15 (1.2%)
com.br — 15 (1.2%)
be — 13 (1.1%)
ch — 13 (1.1%)
co.za — 11 (0.9%)
dk — 10 (0.8%)
au — 8 (0.7%)
se — 8 (0.7%)
es — 8 (0.7%)
org.uk — 8 (0.7%)
ru — 7 (0.6%)
co.nz — 7 (0.6%)
hu — 6 (0.5%)
nz — 5 (0.4%)
ie — 5 (0.4%)
fr — 5 (0.4%)
gov — 5 (0.4%)
co — 5 (0.4%)
id — 4 (0.3%)
at — 4 (0.3%)
za — 4 (0.3%)

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 12, 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 2026-09-12). 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 2026-09-12).

Largest email service provider (ESP)s in this category

Amazon SES (6.18%) · SendGrid (Twilio) (4.63%) · Mailgun (4.01%) · Zendesk (3.76%) · Mailchimp (3.57%) · Mandrill (3.25%) · HubSpot (3.11%) · Salesforce (2.55%) · Mailjet (Sinch) (2.12%) · Cloudflare Email Routing (1.94%)

ESP / mailing services portfolio → · Full daily report →

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Domain sample (top 100 by Tranco rank)

Showing 100 of 1,210 domains.