I’m experiencing an issue with one of my workflows. For the past three days, it hasn’t been triggering automatically, even though it was working perfectly before.
I haven’t made any changes to the workflow during this time, and it is still marked as active. When I run the test manually, as you can see in the attached screenshots, everything works fine. However, the automation doesn’t trigger on its own anymore.
I am still receiving emails in Gmail without any issues, so the problem doesn’t seem to come from my Gmail account. I can’t figure out where the issue lies, and I would really appreciate your help to resolve this.
Hello @Thomas_Cornu!
could you please show here the settings of your trigger, it seems to me that the problem could be in the Poll Time (the “Mode” option inside the trigger).
The Gmail Trigger is polling, not “instant”: it only runs for new emails that arrive after activation and at the set frequency (Poll Time). If manual test works but automatic does not, check that a new email is arriving and that the interval is not too long.
Thank you for your answer. here is the trigger which is set on every minutes. I don’t feel like it has something to do with this because this workflow was working fine for more than 2 weeks, and then stopped.
Is there some updates made by N8N that could have impact this ?
@Gallo_AIA Thank you I just did (I was not on the last stable version) but ufortunatyl it didn’t solve the problem. The worflow is not starting even if I’m receiving a lot of emails
Some users discovered that enabling filters like “Only unread emails” prevents triggering even when new emails arrive; turning that filter off made the trigger work again. (n8n Community)
Gmail triggers can be rate-limited by Google if you poll too often; after a while the trigger may stop working until credentials are re-authenticated or polling frequency relaxed. (n8n Community)
Expired or invalid Gmail credentials / OAuth token frequently appear as the culprit. Even if manual execution works, automatic polling may fail if the token has lost permissions or access was revoked. (n8n Community)
There is an open issue about Gmail polling triggers not working automatically after a while, even though the workflow is active. (GitHub)
What you can try:
Re-authenticate Gmail credentials
Increase polling interval
Check logs/debug mode
Ensure Gmail API, scopes, OAuth settings are still valid
Check that workflow is really Active in Executions tab
