How our email domain pool lives: a year at a glance
Every address you generate here lives on a domain — and those domains are not a fixed list. New ones join every week, some quietly stop receiving mail, and the pool keeps reshaping itself. Here is what that looks like, in rounded numbers and a few pictures.
Numbers are rounded on purpose. The exact size of the pool isn't something we publish — the shape of it is. We started counting on 27 September 2026, so the charts begin there.
How many domains are active
A domain counts as active only while it actually accepts mail. The dark line is the total, day by day; the coloured lines split it into whole domains, single subdomains and domains where any name in front of the @ works. Hover over (or tap) the chart to see all numbers for that day.
all active whole domains single subdomains any name works
Arrivals and departures
Green is how many domains joined, red is how many stopped — shown per day for each month, so a month that has only just started compares fairly with a full one.
joined stopped
The most common zones
The ending of a domain — .com, .net and so on — is its zone. These are the ten most common among active domains right now; everything else is grouped as “other”.
Whole domains and subdomains
whole domains single subdomains
About 67% of active domains work as a whole domain; the rest are a single subdomain of someone else's domain. Whole domains usually last longer: a subdomain depends on more people, and the owner of the parent domain can change things without warning. And on roughly 10% of them any name in front of the domain works too — see wildcard domains.
What this means for you
- A refused address isn't the end. Try one on a different domain — not just a different name on the same one. With this many domains in rotation, another usually works.
- Fresh beats familiar. A domain that joined recently has had less time to end up on anyone's block-list.
- No code arriving? Give it a minute, then switch domains — here's the full checklist.
- Want a domain nobody else uses? Add your own — it joins the pool the same way all of these did.
Domain names themselves are not listed here on purpose: a ready-made list is most useful to whoever builds the block-lists that make sign-up forms refuse temporary addresses.