Your emails go to spam. mailX shows you why, and how to fix it in seconds with clear answers and exact steps. Built for humans and AI agents. API and MCP ready.
Congrats on the launch! Email setup and debugging can be such a pain, especially when something breaks and it’s not clear what to fix. Love that you’re making this easier.
@mansuiki You’re absolutely right, email is one of those things that looks simple on the surface but gets painful fast when deliverability breaks and you’re left guessing what went wrong. That’s exactly the gap we’re trying to close: making the “invisible” issues visible and actionable instead of relying on trial and error.
@mansuiki Thanks! That's the exact gap. Most tools barely surface that something's wrong without telling you which layer broke or what specific record to fix, which is where most teams stall out for weeks. MailX hands you the fix.
The hardest part is often not fixing the issue, it’s finding where the issue actually lives. That’s what we want to make faster with mailX: clear diagnosis, then clear next steps.
I've spent the last 15 years in digital marketing, and a big chunk of that running email at scale, at one point sending over 1.5 million emails a day across more than 30 affiliate brands. When you operate at that volume, you learn one lesson fast: deliverability isn't a technical detail. It's the whole game.
Teams usually pour their energy into better copy, sharper targeting, more campaigns, more volume. All of that matters. But none of it counts if the email lands in spam, and the hardest part is that a deliverability problem rarely announces itself. It doesn't throw an error. It just shows up as silence: fewer replies, softer numbers, and no obvious reason why.
That's the problem we built MailX to solve, alongside my co-founders @bengeekly and @thamibenjelloun . We wanted to pull inbox placement out of the black box, help teams see what's actually happening earlier, fix what genuinely moves the needle, and stop guessing. Because sender reputation isn't an afterthought. It's infrastructure.
Excited to launch today and get into it with the PH community 🚀
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Best part is that mailX feels connected to real experience, not just a trend. This team has probably seen thousands of deliverability problems from the inside. That gives the product a different level of credibility. Excited to see this launch.
@campritchard mailX is not something we built because “AI agents” are trending. It comes from years of seeing the same email deliverability pain inside real teams. The goal was to turn that experience into something simple, fast, and usable by both humans and agents.
@campritchard Thank you to trust our team. We learned and keep learning many things about deliverability. Our experience with Mailwarm thought us a lot about how to build mailX
When emails land in spam, the visible problem is simple: people don’t receive them. But the real work starts after that. You need to understand why it happened. Is it the domain setup? The sending behavior? The content? The reputation? Something else?
I’ve seen teams waste a lot of time trying random fixes because they don’t know what to prioritize first.
That’s the gap we wanted to close with mailX: help teams understand what is hurting their deliverability and what they should fix. Email can still be one of the strongest growth channels, but only if it actually reaches the inbox ;)
After spending years around email deliverability from the technical side, one thing still surprises me: very small details can have a real business impact. A missing DNS record, a weak setup, or one bad configuration can quietly affect whether emails reach the inbox or not.
With more teams adding automation and AI agents into their workflows, this matters even more. Agents can send emails, trigger workflows, and move fast. But they also need clear signals when something is wrong, otherwise they can scale issues without anyone noticing.
That’s what mailX solves: making deliverability easier to understand, not only for humans, but also for AI agents that need structured, actionable answers.
Happy to answer any technical questions with the team today.
This is great. Ironically I just ran into this issue on my own agency email that's on Google. All was well but then I transferred the domain ownership from one website to another to consolidate where my domains are being held and this messed up the MX, SPF, and DKIM settings. Claude walked me through how to get it fixed but it was bad enough that I wasn't even receiving Resend emails from my apps or account verification emails. Would've loved to have this tool before yesterday!
kuku
Congrats on the launch!
Email setup and debugging can be such a pain, especially when something breaks and it’s not clear what to fix. Love that you’re making this easier.
Mailwarm
@mansuiki Thank you! 🙏 That’s exactly the frustration we kept hearing from users.
Most of the time, the issue isn’t impossible to fix it’s hard to pin point what's actually wrong in the first place.
We wanted to make that process much clearer and less intimidating :))
Mailwarm
@mansuiki AI become so good at debugging, that it seemed obvious Agent should be the ones that fix all email protocols.
mailX by mailwarm
@mansuiki You’re absolutely right, email is one of those things that looks simple on the surface but gets painful fast when deliverability breaks and you’re left guessing what went wrong. That’s exactly the gap we’re trying to close: making the “invisible” issues visible and actionable instead of relying on trial and error.
Mailwarm
@mansuiki Thanks! That's the exact gap. Most tools barely surface that something's wrong without telling you which layer broke or what specific record to fix, which is where most teams stall out for weeks. MailX hands you the fix.
Mailwarm
@mansuiki Thank you 🙏
The hardest part is often not fixing the issue, it’s finding where the issue actually lives. That’s what we want to make faster with mailX: clear diagnosis, then clear next steps.
Mailwarm
Hi Product Hunt 👋
I've spent the last 15 years in digital marketing, and a big chunk of that running email at scale, at one point sending over 1.5 million emails a day across more than 30 affiliate brands. When you operate at that volume, you learn one lesson fast: deliverability isn't a technical detail. It's the whole game.
Teams usually pour their energy into better copy, sharper targeting, more campaigns, more volume. All of that matters. But none of it counts if the email lands in spam, and the hardest part is that a deliverability problem rarely announces itself. It doesn't throw an error. It just shows up as silence: fewer replies, softer numbers, and no obvious reason why.
That's the problem we built MailX to solve, alongside my co-founders @bengeekly and @thamibenjelloun . We wanted to pull inbox placement out of the black box, help teams see what's actually happening earlier, fix what genuinely moves the needle, and stop guessing. Because sender reputation isn't an afterthought. It's infrastructure.
Excited to launch today and get into it with the PH community 🚀
Best part is that mailX feels connected to real experience, not just a trend. This team has probably seen thousands of deliverability problems from the inside. That gives the product a different level of credibility. Excited to see this launch.
Mailwarm
@campritchard mailX is not something we built because “AI agents” are trending. It comes from years of seeing the same email deliverability pain inside real teams. The goal was to turn that experience into something simple, fast, and usable by both humans and agents.
Mailwarm
@campritchard Thank you to trust our team. We learned and keep learning many things about deliverability. Our experience with Mailwarm thought us a lot about how to build mailX
Mailwarm
Hi Product Hunt community
When emails land in spam, the visible problem is simple: people don’t receive them. But the real work starts after that. You need to understand why it happened. Is it the domain setup? The sending behavior? The content? The reputation? Something else?
I’ve seen teams waste a lot of time trying random fixes because they don’t know what to prioritize first.
That’s the gap we wanted to close with mailX: help teams understand what is hurting their deliverability and what they should fix. Email can still be one of the strongest growth channels, but only if it actually reaches the inbox ;)
Mailwarm
Hey Product Hunt 👋
After spending years around email deliverability from the technical side, one thing still surprises me: very small details can have a real business impact. A missing DNS record, a weak setup, or one bad configuration can quietly affect whether emails reach the inbox or not.
With more teams adding automation and AI agents into their workflows, this matters even more. Agents can send emails, trigger workflows, and move fast. But they also need clear signals when something is wrong, otherwise they can scale issues without anyone noticing.
That’s what mailX solves: making deliverability easier to understand, not only for humans, but also for AI agents that need structured, actionable answers.
Happy to answer any technical questions with the team today.
我觉得很有趣的点是，越来越多的创业产品在做邮件自动化营销，会不会让我们的邮箱多了很多信息，导致这些信息后来又通过其他的方式直接进入了垃圾箱
This is great. Ironically I just ran into this issue on my own agency email that's on Google. All was well but then I transferred the domain ownership from one website to another to consolidate where my domains are being held and this messed up the MX, SPF, and DKIM settings. Claude walked me through how to get it fixed but it was bad enough that I wasn't even receiving Resend emails from my apps or account verification emails. Would've loved to have this tool before yesterday!