Revenue protection for senders
Don't lose a client to a bounce nobody saw.
InboxMon watches SendGrid, Postmark, and Amazon SES as one picture — so a broken DNS record or a bounced VIP email never costs you a deal you didn't know was at risk.
Built for founders and RevOps teams who can't afford a client email to fail silently. You keep sending from those ESPs; InboxMon merges their events into one health score and alert stream.
Connect in 5 minutes: paste one webhook URL into SendGrid/Postmark/SES. No code changes, no SDK.
SendGrid · Postmark · Amazon SES — one health score across all three
Live health
86
Warning — temporary failures rising on mail.acme.io
Delivery
97.4%
Bounce
1.8%
Temporary errors
3.1%
Latency p95
840ms
Slack · InboxMon
VIP bounce: ceo@bigclient.com
Mail to VIP ceo@bigclient.com bounced. Pause outreach and check deliverability before sales continues.
Just now · #revops-alerts
The problem
A high-value client goes quiet. Nobody on the team knows an email never arrived — it bounced, was dropped, drew a spam complaint, or never left because SPF or DKIM broke last Tuesday.
ESP dashboards bury that in SMTP noise. By the time the campaign “underperformed,” the domain is already throttled. InboxMon exists so the first signal is an alert, not a lost deal.
Who it's for
Pick the column that sounds like your week.
For founders & sales
Revenue protection
Whitelist people you cannot afford to miss — ceo@bigclient.com or a whole client domain. If mail to them bounces or is marked spam, Slack, email, or SMS fires immediately. Disposable / throwaway addresses get screened so junk list hits don't look like a real client problem.
VIP bounce alerts · list hygiene
For CTOs & developers
Infrastructure protection
DNS/DKIM/DMARC watchdog checks every 6 hours (and on demand) so a deleted TXT record doesn't silently kill the domain. SendGrid, Postmark, and Amazon SES ingest into one aggregated health score so engineering is not grepping raw event logs.
DNS watchdog · SendGrid / Postmark / SES · health score
Also in the product
See every email your competitors send.
See what your competitors are actually sending. A dedicated research inbox that organizes competitor newsletters and nurture sequences — pixel-safe, exportable, never mixed with your personal inbox.
In the app this is Secret Shopper. Not a substitute for sending through your ESP.
Under the hood
How it works
You keep sending from SendGrid, Postmark, and Amazon SES. InboxMon listens to those webhooks, merges volume across providers, scores health, and alerts. It does not replace your ESP.
Aggregate ESP monitoring
SendGrid, Postmark, and Amazon SES land in one workspace. Volume is summarized per provider, then merged into a single health score and alert stream. Events ACK in under 200ms; raw payloads are stored; parsing runs in the background.
Sender health score
Temporary errors, hard bounces, bounce rate, latency, and complaints collapse into one 0–100 score (Healthy / Warning / Critical) across every connected ESP.
Hourly anomaly detection
Last hour vs a 7-day baseline, plus disposable-address hits when those events arrive.
Domain breakdown
See which sending domain is drifting so sales and engineering are looking at the same numbers.
FAQ
- Does InboxMon replace my ESP?
- No, it listens to it.
- How do you connect?
- One webhook URL per provider.
- Is my email data safe?
- Raw payloads stored privately, never sold, delete anytime.
Pricing
The first 50 founding members lock in 30% off, permanently. Signup is free now; paid checkout is still closed. Starter–Enterprise stay listed so you can see the band.
Free
$0
10k emails / month
- VIP bounce alerts
- DNS/DKIM/DMARC watchdog
- Sender health score
- 2 ESP connections
- 1 tracked competitor, 14 days of history
Starter
$39
25k emails / month
- VIP bounce alerts
- DNS/DKIM/DMARC watchdog
- Sender health score
- 5 ESP connections
- 3 tracked competitors, 60 days of history
Pro
$99
100k emails / month
- VIP bounce alerts
- DNS/DKIM/DMARC watchdog
- Sender health score
- 10 ESP connections
- 10 tracked competitors, 90 days of history
- Toxic Email Detection
Growth
$299
500k emails / month (capped)
- VIP bounce alerts
- DNS/DKIM/DMARC watchdog
- Sender health score
- Unlimited ESP connections
- 25 tracked competitors, 6 months of history
- Toxic Email Detection
Enterprise
Custom
500k+ emails / month
- VIP bounce alerts
- DNS/DKIM/DMARC watchdog
- Sender health score
- Custom competitor caps and history
- Volume, support, and onboarding by conversation
Catch reputation risk before the inbox does.
The first 50 founding members lock in 30% off, permanently. Connect in 5 minutes: paste one webhook URL into SendGrid/Postmark/SES. No code changes, no SDK.