Allow domains with > 10 addresses pick 10 to search/report on
Similar to a few other suggestions about domains that are really <= 10 "people" but are perhaps creating many unique (maybe with + in the address, but maybe just hashes) e-mail addresses to be able to trace leaks, it would be useful to be able to identify up to 10 "real" e-mail addresses in a domain to report on at the "free" tier.
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That gets extremely messy, and it also doesn't change the amount of underly data we need to store and process (the single biggest factor in our costs). Try this KB https://support.haveibeenpwned.com/hc/en-au/articles/7707041970703-How-can-I-minimise-the-subscription-cost-of-domain-searches
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Brian commented
I'm sure I'm not going to change your mind, but as for the underlying data, I would submit/suggest that you only need to store the data for the 10 chosen accounts.