Maileroo on new websites

Transactional email API.

Sites using Maileroo
286
since Apr 2026
Last 30 days
0.0%
of new sites, to Oct 19
no change on the 30 days before
Last 7 days
0.0%
of new sites, 7-day average
no change on the week before
Rank in Transactional Email
#24
of 172 tools, all time
In our data since Apr 2026
Last seen Oct 19, 2026
Website maileroo.com

What we found

  1. Maileroo appeared on about 48 new sites in the last 30 days.[1]

Share of new sites using Maileroo

0.000% 0.001% 0.002% 0.003% 0.004% 10 Sep Oct

The line is the 7-day average share of new sites that use Maileroo, since 10 September.

Who uses Maileroo

Kind of site 134 sites with a known type
TypeSitesShareBar
Productivity 29 21.6%
Developer Tools 16 11.9%
Marketing 15 11.2%
Health 13 9.7%
AI 11 8.2%
Social 10 7.5%
E-commerce 9 6.7%
Education 8 6.0%
Finance 7 5.2%
Games 6 4.5%
Hiring & HR 5 3.7%
Content 3 2.2%
Country[2] 47 sites with a likely country
CountrySitesShareBar
UK 12 25.5%
US 5 10.6%
India 4 8.5%
Canada 3 6.4%
UAE 2 4.3%
Australia 2 4.3%
Germany 2 4.3%
Estonia 2 4.3%
France 2 4.3%
Poland 2 4.3%
Singapore 2 4.3%
Bangladesh 1 2.1%
Domain ending 286 sites
EndingSitesShareBar
.com 152 53.2%
.app 29 10.1%
.io 10 3.5%
.uk 9 3.2%
.ai 7 2.5%
.ca 7 2.5%
.online 7 2.5%
.xyz 7 2.5%
.in 5 1.8%
.net 5 1.8%
.me 4 1.4%
.org 4 1.4%
Green hosting[3] 45 checked sites since Apr 2026
SitesGreenBar
Maileroo 58%
All new sites 47%

Transactional Email on new sites

# Movement Tool Share of all sites Share of category Bar
1 – Resend 4.2% 58.3%
2 ▼1 SendGrid 0.5% 7.1%
3 ▼2 Amazon SES 0.5% 7.1%
4 ▲2 MailChannels 0.5% 6.9%
5 ▲12 Mandrill 0.4% 5.6%
…
24 ▼2 Maileroo <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. The most common alternatives to Maileroo on new websites are Resend and Amazon SES. Among September launches it ranked #26 in Transactional Email, down from #24 in August. All 172 in Transactional Email

Often used with Maileroo

Tool Sites with both vs all new sites Bar
Next.js 89 2.3x
Cloudflare DNS 176 2.0x

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

Recently launched products built on Maileroo

Notes

  1. These figures cover websites that went live since April 2026, not the web as a whole.
  2. 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.
  3. 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.

How this page is made

FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards Maileroo when we detect Maileroo on it at that look.

Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.