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Shared Mailbox Infinite triggering

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Posted on by wyattdave

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Strange one here, we had a flow that worked great in dev, went to test with a Service Account and now it continually triggers.

There has only been one email sent, yet it keeps using it to trigger the flow. You can see below in the logs, its the same message idea that keeps triggering it. The other strange bit is the frequency, the trigger polls every 5 mins, but runs every 10 . So it:

checks email, finds, runs
checks email, does not find, no run
checks email, finds, runs
checks email, does not find, no run
checks email, finds, runs

and so on

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Building flows

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David_MA 15,589 Super User 2026 Season 2 on at

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Please show the configuration of your flow. Otherwise, there isn't much one can suggest. It sounds like you created an infinite loop, which would occur if part of the flow sends an e-mail to the same shared mailbox that is in the trigger? When you show the flow, be sure to show the configuration of the actions especially the trigger.
wyattdave 493 Moderator on at

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Thank you for the help David MA,

The flow is very simple, with no settings/conditions on the trigger (no email sending in the flow). Its the same message id triggering the flow, meaning this isn't being triggered by a new email, but the same one. So the flow can't be causing by sending a email to itself
David_MA 15,589 Super User 2026 Season 2 on at

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@wyattdave please show the configuration of your flow.
wyattdave 493 Moderator on at

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@David_MA please see below, there are no other Outlook actions in the flow.

May I ask what configuration you think may cause a email already processed once to trigger a flow again?