Addrly
Email validation and signup firewall built for indie founder
Addrly launched on May 26, 2026 with 2 votes, #6,288 of 20,538 launches that month.
What it does
Most email validation tools start at $30-50/month — there's no tier for early-stage founders who just need to keep fake signups out. Addrly fixes that. It catches disposable emails, bad MX records, role accounts, and shady domains before they hit your database. Gates — a built-in rule engine that lets you block, allow, or challenge signups based on email, domain, network, and geo signals. Rules update live, no redeploys needed.
Stop fake signups before they start. Email validation API with disposable detection, MX verification, and a programmable signup firewall. Free tier with 2,500 requests/month.
Does a similar job
all alternatives →- A1After 10 years my side project has hit $8k/mo in revenue2020 · ▲442
Back in 2010 I had an idea for a service that would allow people to easily create semi-permanent email aliases so that they could give an email address to people and websites without revealing their real email address. These aliases will continue to work indefinitely unless you choose to block them. My brother and I spent a few months building the initial version and launched the website in July 2010. For the first year we had about 50 signups per month, by 2013 this had increased to 1500 and it's currently around 3500 per month. Similarly, our revenue grew consistently but slowly - doubling…
I built an email marketing tool made for indie hackers and solopreneurs2022 · useplunk.com · ▲109Send transactional emails, run marketing campaigns, and automate workflows. Open-source and self-hostable, $0.001 per email, no contact limits.
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