MailUp on new websites
Email and SMS marketing platform.
38 sites
37 found by StackScope, 1 via launch platforms
- StackScope Wider Web 34
- StackScope Discovery (Indie) 3
- PeerPush 1
MailUp appeared on 18 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with MailUp.
18 new sites with MailUp first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using MailUp, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using MailUp
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded area was measured against a different set of sites, so the line can step there without MailUp itself changing.
Coverage details
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.
Domain endings using MailUp
38 sites, all time
- .com 57.9%
- .it 18.4%
- .io 5.3%
- .org 5.3%
- .app 2.6%
- .eu 2.6%
- .live 2.6%
- .site 2.6%
- .store 2.6%
Country
Country likely for 10 of 38 sites (26.3%), 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.
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Italy
80.0%
-
South Korea
20.0%
Email Marketing leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | ▼1 |
Brevo
|
0.8% | 32.5% |
| #2 | ▲8 |
Hostinger Reach
|
0.7% | 28.5% |
| #3 | ▼1 |
Klaviyo
|
0.3% | 11.4% |
| #4 | – |
HubSpot
|
0.2% | 6.4% |
| #5 | – |
Mailchimp
|
0.1% | 5.0% |
| … | ||||
| #49 | ▲13 | MailUp 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 Email Marketing tool.Among September launches it ranked #40 in Email Marketing, up from #53 in August. All 279 in Email Marketing →
Recent launches using MailUp
4 of the 38 sites using MailUp are product launches we list individually. The other 34 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
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The StackScope API serves all 38 sites using MailUp, filterable and exportable, from £15 a month.