First company was csper.io (2019), took maybe 3 months till I had my first customer, and then around month 6 I started getting ~1 customer/week, and continued scaling after that. Felt pretty comfortable with the idea and didn't need to pivot/drop.
Second/current one, dmarcdefender.io (2025), took maybe 6 months till I had my first customer, but now it's growing much slower. There's a lot more competition and still trying to figure out where I fit in / how to market it among all the competition. I was originally positioned as a security focused product, but now pivoting to more of a marketing/deliverability product. But to be honest not really sure where it's going, but still fighting the fight.
Thanks for the feedback! The domain checker tool is completely free and unrelated to the subscription. The subscription is for dmarc monitoring (I collect the dmarc aggregation reports and provide insights). I'll see if I can make that more clear.
https://dmarcdefender.io. DMARC service focused on api/integrations. Currently thinking about (1) writing an ml classifier to classify sources, and (2) using rag to automatically generate spf/dkim fix advice for different sources.
Second/current one, dmarcdefender.io (2025), took maybe 6 months till I had my first customer, but now it's growing much slower. There's a lot more competition and still trying to figure out where I fit in / how to market it among all the competition. I was originally positioned as a security focused product, but now pivoting to more of a marketing/deliverability product. But to be honest not really sure where it's going, but still fighting the fight.