n8n - 💡(How to fix) Fix IMAP trigger opens multiple simultaneous connections causing duplicate workflow executions [2 comments, 2 participants]

The Email Read IMAP trigger node is opening too many simultaneous connections to the mail server, causing each incoming email to trigger the workflow multiple times instead of once. Steps to reproduce:

Set up an Email Read IMAP trigger with forceReconnect: 120 Send an email to the monitored inbox The workflow triggers 13+ times simultaneously for the same email

Expected behavior: Each email should trigger the workflow exactly once. Actual behavior: Each email triggers the workflow 13 times simultaneously. This number has grown progressively over several weeks: started at 3, then 6, now 13. The mail server returns this error: mail_max_userip_connections=20 — confirming that n8n opens too many simultaneous IMAP connections. Environment:

n8n cloud (Starter plan) Instance: calinea.app.n8n.cloud Node: n8n-nodes-base.emailReadImap typeVersion 2 forceReconnect: 120 minutes Action: Mark as Read

Additional context: Stopping all executions and deactivating/reactivating the workflow does not fix the issue. The duplicate triggers resume immediately on the next email received.