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.
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When an AI agent is sending at high volume through an API, does mailX treat deliverability issues differently than it would for a human sender — like different thresholds or different recommended fixes?
@hirogure Yes, the risk profile is different. An AI agent can scale bad behavior much faster than a human sender, so the recommendations should be stricter: slower ramp, stronger checks, cleaner lists, more monitoring. Same deliverability fundamentals, but lower tolerance for risk before scaling.
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@thamibenjelloun Makes sense — "same fundamentals, lower tolerance" is a clean way to frame it. Do you find the ramp period needs to be longer for agents, or is it more about the monitoring frequency?
@hirogure The rules don't change SPF, DKIM, DMARC, the difference with volume can be domain reputation. that people should be careful about
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@bengeekly Got it — so the auth setup is the same, but domain rep becomes the variable that breaks at scale. Is there a sending volume per day you'd recommend staying under during the initial warmup phase?
What I find interesting about this space is that deliverability is becoming less of a technical issue and more of a trust infrastructure issue. Especially now that AI has dramatically increased outbound volume everywhere. Curious if you think inbox providers are moving toward evaluating behavioral authenticity as much as domain health itself?
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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!
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When an AI agent is sending at high volume through an API, does mailX treat deliverability issues differently than it would for a human sender — like different thresholds or different recommended fixes?
Mailwarm
@hirogure Yes, the risk profile is different. An AI agent can scale bad behavior much faster than a human sender, so the recommendations should be stricter: slower ramp, stronger checks, cleaner lists, more monitoring. Same deliverability fundamentals, but lower tolerance for risk before scaling.
@thamibenjelloun Makes sense — "same fundamentals, lower tolerance" is a clean way to frame it. Do you find the ramp period needs to be longer for agents, or is it more about the monitoring frequency?
Mailwarm
@hirogure The rules don't change SPF, DKIM, DMARC, the difference with volume can be domain reputation. that people should be careful about
@bengeekly Got it — so the auth setup is the same, but domain rep becomes the variable that breaks at scale. Is there a sending volume per day you'd recommend staying under during the initial warmup phase?
SyncSignature
What I find interesting about this space is that deliverability is becoming less of a technical issue and more of a trust infrastructure issue. Especially now that AI has dramatically increased outbound volume everywhere. Curious if you think inbox providers are moving toward evaluating behavioral authenticity as much as domain health itself?
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!
Meet Warren
I really would love just a button and all my mail setup / best practices audits are done and, even better, fixed. Does this tool do that?
Cutsio
Usually spam reasons are skewed domain reputation but nice to see this making sure none of the other usual suspects are the reasons. Good stuff!