Show IH: B2B email filter tool

Hey Indiehackers!

For those who do not want to read and go straight to the tool: https://rekognito.com/business-email-filter

Now to the story:

I have been building a SaaS business for 6 years now.
At one moment I wanted to know more about the people who sign up every day. There are hundreds of new users creating an account each day.

So I did a search in the database. And what I saw was that a lot of them are registered using Gmail or other email provider domains.

But there was also a bunch of them using custom business domains.
So the first thought was that this is a great segment who I should reach out to as they are potentially a B2B customer.

So I put together a quick script where I can use an email list as input and the output will filter out all emails with email provider domains.

The next thing I thought was that if this is helpful for me then it might be helpful to other creators as well who have an email list.

So I will leave a Twitter link here as well for you guys who want to follow and are interested in more stuff like this:

PS - There might be a real tool in the making that automates the whole user recognition process

Please share your thoughts and feedback. Did you find this tool useful?

Cheers!