Delayed execution for critical tasks

Describe the problem/error/question

We have a workflow that triggers on the event [Every 1 minute Unread Email] data arrival. The subsequent steps are straightforward, involving Agentic actions like parsing and tool invocation. Typically, this process completes within 2 minutes.

However, we’ve recently observed delays in responses for some emails—ranging from 30 minutes to 1 hour. Interestingly, there are no errors reported, just unexplained delays. This issue affects about 2 out of 10 emails, even though all emails follow a similar pattern with varying data.

I’m unsure what could be causing these delays. Has anyone else encountered a similar issue or have insights into what might be causing this?

What is the error message (if any)?

Please share your workflow

GMAIL → Loop Over[if multiple emails received within 1 minute] → AI Agent [Call ChatGPT, Google Sheets, SerpAPI ] → Reply GMAIL → Next Item/STOP

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:

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