SparkPost on new websites

1. SparkPost appeared on about 350 new sites in the last 30 days.^[1]
2. Half of new SparkPost sites also use cdnjs.
3. It is unusually common among finance launches: 63%, against 8.7% across new sites.

The line is the 7-day average share of new sites that use SparkPost, day by day for the last 90 days and weekly before that (left of the dashed line). The shaded areas were measured against a different set of sites, so the line can step there without SparkPost itself changing.^[2][3]

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Resend	4.2%	58.6%
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%
…
18	▲1	SparkPost	<0.1%	0.3%

All-time shares across the new sites we track: of all of them, and of the sites using any Transactional Email tool. All 172 in Transactional Email

Tool	Sites with both	vs all new sites	Bar
cdnjs	537	11x
unpkg	163	8.4x
jsDelivr	381	7.6x
Bootstrap	341	6.9x
Font Awesome	520	6.9x

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

46 of the 1,140 sites using SparkPost are product launches we list individually. The other 1,094 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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.

• d5 Metronome and tuner sourceforge.net
• Flow State Tracker sourceforge.net
• What Does a PPC Agency in Noida Do? ppcseomarketing.com

Site	Found	Also detected
d5 Metronome and tuner sourceforge.net · United States	Oct 13
Yandot — Agents that finish real work elidot.com · AI	Oct 11
Flow State Tracker sourceforge.net · Productivity · United States	Oct 11
Medreport — Diagnostic Report Portal & Health Monitoring Hub medreporthealth.org · Health	Oct 2
What Does a PPC Agency in Noida Do? ppcseomarketing.com · Marketing	Sep 24
Async Bumblebee async.com · Content · United States	Sep 23
Shoreleave · Staff leave, without the spreadsheet shoreleave.app · Hiring & HR	Sep 21
Aeries Technology aeriestechnology.com · India	Sep 16
Plezo: NPS and CSAT surveys, kept simple plezo.app · Education	Sep 13
inMotion Transfer — send files up to 5 GB, free inmotiontransfer.com · Productivity	Sep 13
PCI Cart Monitor - Shopping Cart Monitoring — PCI Compliance Monitoring pcicartmonitor.com	Sep 9
NipeCode — Accountable property access for Kenyan estates nipecode.com	Sep 4

Showing the most recent 12 of 46.

The StackScope API serves all 1,140 sites using SparkPost, filterable and exportable, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well, so the share is measured against a much larger set of sites. For one continuous measure, view launch platforms only.
3. 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.
4. 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.
5. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.