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SMTP2GO on new websites

Name: SMTP2GO adoption on new websites
Creator: StackScope

Cloud transactional email and SMTP relay service.

#23 of 172 in Transactional Email In our data since Apr 2026 Last seen: Oct 16, 2026 Most recent launch: HaulVigil · Know the carrier. See the evidence., Oct 16, 2026 Website: smtp2go.com

473 sites

418 found by StackScope, 55 via launch platforms

StackScope Wider Web 281
StackScope Discovery (Indie) 137
Product Hunt 40
Other 6
Hacker News 5
PeerPush 4

View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

SMTP2GO appeared on about 120 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Stackdar alerts

Get told when a new site ships with SMTP2GO.

121 new sites with SMTP2GO first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using SMTP2GO, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

Share of new sites using SMTP2GO

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.

0.0%

last 7 days

+0.0pp vs prior week

0.0%

30 days to Oct 16

-0.0pp vs 30 days before

473

sites all time

since Apr 2026

Mar 30, 2026 90 days Oct 16, 2026

The shaded areas were measured against a different set of sites, so the line can step there without SMTP2GO itself changing.

Coverage details

Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.

Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.

Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

What kind of sites use SMTP2GO

186 sites with a known type, all time

Developer Tools

15.1%

Health

12.4%

Marketing

11.3%

Education

10.8%

Finance

8.6%

E-commerce

8.1%

Content

7.5%

Productivity

7.0%

6.5%

Games

5.4%

Hiring & HR

2.7%

Social

2.7%

Crypto

1.1%

Design

1.1%

Domain endings using SMTP2GO

473 sites, all time

.com 51.2%
.app 5.5%
.uk 5.5%
.ca 4.7%
.net 3.4%
.io 3.2%
.org 2.8%
.au 2.1%
.co 2.1%
.dev 2.1%
.nz 2.1%
.ai 1.9%
.online 1.7%
.fr 1.5%

Country

Country likely for 108 of 473 sites (22.8%), all time.

How we know

Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.

United Kingdom 27.8%
Canada 18.5%
Australia 10.2%
New Zealand 7.4%
United States 7.4%
France 5.6%
Switzerland 4.6%
India 4.6%
Spain 1.9%
Hong Kong SAR China 1.9%
Netherlands 1.9%
Austria 0.9%
Bangladesh 0.9%
Czechia 0.9%

Green hosting

55 checked sites since Apr 2026.

What this means

The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.

SMTP2GO 55%
Average 47%

Transactional Email leaders

		Tool	% of sitesall time	% of categoryall time
#1	–	Resend	4.2%	58.7%
#2	▼1	SendGrid	0.5%	7.2%
#3	▼2	Amazon SES	0.5%	7.1%
#4	▲2	MailChannels	0.5%	6.8%
#5	▲1	Mail.Baby	0.4%	5.5%
…
#23	▼1	SMTP2GO Current page	<0.1%	0.1%

Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Transactional Email tool.The most common alternatives to SMTP2GO on new websites are MailChannels and Mail.Baby. All 172 in Transactional Email →

Often used with

Tool	Sites	vs all new sites
Cloudflare Email Routing	90	4.6x
Cloudflare DNS	299	2.1x
nginx	91	2.0x

Tools that turn up far more often on SMTP2GO sites than on new sites in general, and how many times as common each one is there.

Recent launches using SMTP2GO

192 of the 473 sites using SMTP2GO are product launches we list individually. The other 281 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works

HaulVigil · Know the carrier. See the evidence. Oct 16, 2026 Also detected