Let agents watch your domain health on MXToolbox
QX runs DNS, blacklist and email authentication checks for you—so your domains stay deliverable and online without anyone babysitting a dashboard.
Stop chasing blacklist hits, broken DNS, and silent email failures. Hand it to an agent.
Email auth that never drifts
An agent verifies SPF, DKIM, DMARC and BIMI on a schedule—flagging misconfigurations the moment they appear, so your campaigns and transactional mail keep hitting the inbox.
Catch blacklistings instantly
Domains and IPs get scanned across major blocklists continuously. The agent surfaces hits the second they happen, drafts delisting requests, and pages the right team.
DNS and connectivity, watched
MX, DNS, HTTP, SMTP and ping checks run automatically across every domain you care about—so an outage gets caught and triaged before customers ever notice.
MXToolbox
Real workflows, built for your team
Build complex workflows in minutes that chain MXToolbox together with the rest of your stack. Trigger them on specific events, on schedule, or on demand.
Marketing: Protect every campaign send
Every morning at 6am
Scheduled trigger
Check SPF, DKIM and DMARC
in MXToolbox
Scan domain across blacklists
in MXToolbox
Summarize deliverability risks
Agent step
Post status to #email-ops
Alert via Slack
Pause scheduled campaign
in Notion
QX agents can scan blacklists, verify email records, test DNS—and a lot more
+ 5 more actions
About MXToolbox
MXToolbox is the go-to network diagnostics platform trusted by IT and email teams worldwide. It bundles DNS lookups, blacklist monitoring, SMTP testing and email authentication checks behind a single API—making it ideal for keeping domains deliverable, secure and online without manual effort.
About QX Labs
QX is an AI agent platform that helps you build, run and scale AI across your team in a few clicks. Create agents that connect to your data and 1,000+ apps, building institutional memory that gets sharper every run. Then delegate tasks to them from where you already work—Slack, Teams, WhatsApp or email.
See MXToolbox working inside your stack
Want an AI co-worker that watches your domains and deliverability around the clock? Book a demo call to discuss your use cases, or get started for free.
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