Show HN: Zenlogin – API to email users when a suspicious login happens

Hi HN -

My partner and I just launched Zenlogin. It's a super-straightforward security API that you can integrate into your login flow, whereby if/when we detect a suspicious login (via things like IP and User Agent), we'll send off an email to notify that user of the login action.

While we were building out this security functionality for another app, we realized it's pretty tricky to get right. We had consider VPNs, Bots, dynamic IP addresses, etc.

A simple use-case is: a user logs into your app from Toronto, and then a few hours later logs in via Atlanta. In that case, we'll send off a (v nice looking) email that includes a Google Map and details on the login. Something like:

https://zenlogin.co/preview

Happy to answer any questions :)

Nice product and nice documentation. Everything is clear and nice I might even consider y’all’s service whenever I find something.

It's nice... but cost-prohibitive for small nonprofit projects!