Email verification statistics
Month by month, how the addresses customers verify split by verdict, which risk signals fire and how often, which kinds of domain they belong to and which mail providers serve them. Counts and shares only, pooled across every account.
These are shares of the addresses customers chose to verify — signup forms, lead lists, old databases — not shares of email in general. A month is published only when it holds at least 500 lookups from at least 5 accounts and no single account holds more than 50% of its rows; below those floors it is listed without figures. Nothing here describes an address or a customer.
Measured on September 13, 2026: no month in the last 12 has cleared the publication floors yet, so no figures are published.
September 2026 (in progress)
Not published yet: the month is still in progress.
August 2026
Not published: under the floors.
July 2026
Not published: under the floors.
June 2026
Not published: under the floors.
May 2026
Not published: under the floors.
April 2026
Not published: under the floors.
March 2026
Not published: under the floors.
February 2026
Not published: under the floors.
January 2026
Not published: under the floors.
December 2025
Not published: under the floors.
November 2025
Not published: under the floors.
October 2025
Not published: under the floors.
September 2025
Not published: under the floors.
Common questions about these statistics
- What population do these statistics describe?
- The addresses Spaw customers chose to verify: signup forms, lead lists, old databases. They say what those lists look like, not what email in general looks like, and a month is shaped by whoever verified the most that month.
- When is a month published?
- Only when it holds at least 500 lookups from at least 5 accounts and no single account holds more than 50% of its rows. A month under those floors is listed without figures, so one customer's list can never be read out of a share.
- Is anything about an address or a customer in here?
- No. The report is built from counts — how many lookups answered each verdict, how many carried each signal — and the file holds no address, no account name and no per-account figure. The per-account share is checked only to decide whether a month is published.
- How are the signal shares computed?
- Each share is the number of lookups whose answer carried that signal, divided by the lookups in the month that recorded their signals at all. Older rows recorded no signal list and are counted in the verdict split but not here. A catch-all counts whether or not it sat behind a security gateway.
- Can I reuse these figures?
- Yes, under CC BY 4.0 with attribution to Spaw. The Markdown twin at /statistics/email.md carries the same tables and is the easiest form to quote.
Licence: CC BY 4.0, attribution "Spaw (spaw.co)". The same tables are served as Markdown at /statistics/email.md.