MailCluster on new websites

1. MailCluster appeared on about 37 new sites in the last 30 days.^[1]
2. Seven in ten new MailCluster sites also use Apache.

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

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Google Workspace	5.7%	20.0%
2	–	Hostinger Email	4.8%	16.7%
3	–	GoDaddy Email	2.3%	7.9%
4	–	Microsoft 365	2.0%	6.8%
5	▲1	IONOS Email	1.7%	5.9%
…
235	▼61	MailCluster	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Email Hosting tool. MailCluster is typically used alongside Google Workspace rather than instead of it. Among September launches it ranked #272 in Email Hosting, down from #211 in August. All 4749 in Email Hosting

Tool	Sites with both	vs all new sites	Bar
Panthur	45	26760x
Apache	114	14x
jQuery	114	4.6x
WordPress	98	4.5x
Font Awesome	46	3.9x

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

11 of the 176 sites using MailCluster are product launches we list individually. The other 165 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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.

• Solar Systems Brisbane solahartstrathpine.com.au
• How Actors Hub Builds Great Actors actorshubperth.com.au
• Ice Machine Maker Commercial onlineicemachines.com.au

Site	Found	Also detected
UML Wizard — a free, cross-platform UML designer umlwizard.app · Developer Tools · Australia	Oct 13
Solar Systems Brisbane solahartstrathpine.com.au · Australia	Sep 30
QuickMake Apps quickmakeapps.com · Productivity · Australia	Aug 18
Nurse Tasker — Shift Planning & Bed Board Software for Nursing Teams nursetasker.com · Health · Australia	Aug 6
Yeti Doc — The simple alternative to DocuSign yetidoc.com · Productivity · Australia	Aug 3
Tenselo — 345 Water & Irrigation Engineering Calculators tenselo.com.au · Australia	Aug 2
How Actors Hub Builds Great Actors actorshubperth.com.au · Education · Australia	Aug 2
Ice Machine Maker Commercial onlineicemachines.com.au · Australia	Jul 29
Living with the Word — Sermon Recording & Reflection App livingwiththeword.app	Jul 20
Zapple | Data-Centric Systems That Remove Friction zapple.com.au · Developer Tools · Australia	Jul 11
Sensen - Smart Curbside Management sensen.ai	Jun 11

The StackScope API serves all 176 sites using MailCluster, 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. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.