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Email triggers not working in Power Automate

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Posted on by cdfj

I have what I would think is a very simple set of triggers for incoming emails in Power Automate using When a new email arrives in a shared mailbox - trigger only if incoming email is from a specific domain and if the subject contains a specific string.

I have tried different combinations (including endsWith for the email domain) without success and keep getting errors like

The template language function 'xxx' expects its first parameter to be of type string. The provided value is of type 'Null'

Help to identify my error greatly appreciated!

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Building flows

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Caspar_Rubin 831 on at

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Hey

The trigger conditions look fine to me.

Are you sure that the trigger is the problem here? If the trigger is the issue, usually the flow wouldn't even run and give you errors... They simply don't start...

Are you sure that the error doesn't come from an action further down in the flow?

cheers
cdfj 73 on at

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Thanks @Caspar_Rubin - I wish it were so! And thank you for confirming I'm not nuts with the conditions!
It definitely falls over at the start - when I run a test it fails immediately.
I am wondering if there can be a conflict with other settings in the trigger? Hyphens in the To email address?
Your expertise much appreciated!
Caspar_Rubin 831 on at

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Hey

Super strange, I just did some testing with the same trigger conditions and i never got an error.

I've seen that other people have the same error message coming from completely different triggers...

Could you maybe try to save the flow as a copy and try turning on the copy and running it?
Maybe your flow is buggy... maybe even try creating a completely new flow and create the trigger from scratch if you haven't tried that yet...

cheers
Matthy79 4,188 Super User 2024 Season 1 on at

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Hello @cdfj

@In your trigger condition is a the character “@“. This character has a special meaning in power automate. Have you tried to remove it from your trigger condition?

Haven’t tested it, but it is very possible that this is causing the problem.
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cdfj 73 on at

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With a few hours left before I go on leave and offline, I have fixed it. 🤗 I took your advice @Caspar_Rubin and built a new trigger, which inserted an array by default and changing the trigger conditions to Outputs got it running.