Automated Mailtrap Send Failure Monitoring
Every hour, WebRun opens Mailtrap, checks the sending activity log for failed or bounced emails across connected inboxes and sending domains, posts a Telegram alert the moment failures rise above normal, and texts the on-call developer through Twilio if the failure rate stays high for more than one check.
How do I catch a Mailtrap email sending failure spike quickly?
Every hour, WebRun checks Mailtrap's sending activity for failed or bounced emails, posts a Telegram alert the moment failures rise above the normal range, and texts the on-call developer through Twilio if the spike persists across more than one check. Sending problems get caught within the hour instead of surfacing from a user complaint.
- Send failure spikes get caught within the hour they start
- Only sustained spikes wake the on-call developer
- Sending problems surface before a user files a complaint
Built for software developers · engineering teams · SaaS companies sending transactional email · DevOps teams
What does WebRun do on every run?
The exact actions WebRun takes, in order - in plain language, so you can adjust anything.
-
WebRun signs in and gets to work
Opens
mailtrap.ioin a real browser with your saved login - no setup, no API keys. -
1
Mailtrap - check sending activity
mailtrap.io
WebRun opens Mailtrap to check sending activity. - Open Mailtrap and review the sending activity log
- Read the failed and bounced count for the past hour
- Compare it against the normal hourly range
Done when The past hour's failure and bounce counts are captured and compared to normal.
-
2
Telegram - post the failure alert
telegram.org
WebRun opens Telegram to post the failure alert. - Post a Telegram alert the moment failures rise above the normal range
- Include the failure count and which sending domain it is tied to
- Post nothing when failures are within the normal range
Done when The dev channel has a Telegram alert for any above normal hour.
-
3
Twilio - text the on-call developer
twilio.com
WebRun opens Twilio to text the on-call developer. - Text the on-call developer only if the failure rate has stayed high for more than one check in a row
- Include the sending domain and failure count in the text
- Skip the text for a single high hour that clears on its own
Done when The on-call developer is texted only for a sustained failure spike.
How is each run configured?
Secure by default
Connect once, stays signed in
WebRun signs in once and keeps each session in a persistent environment, so every run picks up right where it left off.
Every action is checked against this policy before it runs.
Questions, answered
Does it fix the sending issue?
No. WebRun only detects and reports the failure spike. Diagnosing and fixing the sending problem stays with your development team.
Why text only after more than one bad hour?
So a brief blip does not wake the on-call developer. A spike that persists across checks is more likely to be a real problem.
Does this cover both test and production sending?
It reads whatever inboxes and sending domains are connected in your Mailtrap account, whether used for testing or live sending.
Related templates
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