Hi everyone!

I'm working on Temp Mail Detector , and as part of this I thought it would be interesting to look under the hood and pull out some statistics to create a sankey diagram showing which of the disposable email providers are most prominent over the last three months.

What this diagram shows

The ranking of the most tracked providers over a period of three months (left to right).

The relative market share of each provider, indicated by band width.

Which providers are gaining or losing ground over time.

Raw usage metrics are normalised to a scale of 1–10.

How the competitive set remains (mostly, at least during this period) stable, with no new entrants or exits during the period.

Some interesting observations:

It's not always the big names which cause the most trouble, but rather those with programatic and agentic access.

Despite this, temp-mail.org which does not provide programatic access stays high up there, suggesting they have (very) high volumes of user traffic in comparison to smaller…