Flowmailer on new websites

1. Flowmailer appeared on 2 new sites in the last 30 days.^[1]

The line is the 7-day average share of new sites that use Flowmailer, since 12 September. It starts at our first detection.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Resend	4.1%	58.2%
2	▼1	SendGrid	0.5%	7.1%
3	▼2	Amazon SES	0.5%	7.1%
4	▲2	MailChannels	0.5%	7.0%
5	▲11	Mandrill	0.4%	5.8%
6	▲1	Mail.Baby	0.4%	5.6%
7	▲2	Postal	0.2%	3.2%
8	▼3	Mailgun	0.2%	3.1%
9	▼1	Cloudflare Email	0.2%	3.1%
10	▼2	Firebase Trigger Email	0.1%	1.1%
11	▼1	EmailJS	0.1%	1.0%
12	▼1	Mailjet	<0.1%	0.7%
…
65	▲23	Flowmailer	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Transactional Email tool. Among September launches it ranked #52 in Transactional Email, up from #75 in August. All 172 in Transactional Email

2 of the 10 sites using Flowmailer are product launches we list individually. The other 8 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
Spotler One: marketing automation for commerce and B2B spotlerone.com · Marketing	Sep 21
Grassroot Coach grassrootcoaches.com	Aug 22

Watches, exports and the API give you all 10 sites using Flowmailer, from £15 a month.

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