web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Automate / Outlook MessageId is N...
Power Automate
Suggested Answer

Outlook MessageId is NOT unique

(0) ShareShare
ReportReport
Posted on by 4

Hello,

I have setup a flow to log (among other things) each email to a log table in on-premises database. This ran for some time and for the most part worked. I am developing this further with the understanding that the MessageId is a unique value, but I am finding that is is NOT unique. 

If I execute :

SELECT * FROM audit.EventLog WHERE SourceId IN (
SELECT
[SourceId]
FROM [audit].[EventLog]
GROUP BY SourceId
HAVING COUNT(*)>1
)
AND sourceid='AAMkAGI4ZGQxODM3LTE1MTktNDlhOS05OTY1LThjNjBhZTExNjIwYwBGAAAAAAAbkuZPGNHBTY-o7TpPuklBBwBhG_qNiCDrR6haRvwuqbf4AAAAAAEMAABhG_qNiCDrR6haRvwuqbf4AAH8bhXXAAA='
ORDER BY SourceId,EventDateTime

I get two records (there are many instances of dups)

Duplicate MessageId.png

In this case, several hours apart and there is no connection between the two messages. 

 

Is there a function available in flow for me to unique-fy the message? 

 

The root problem I am trying to solve is - some emails we receive are the same name every time. Its not datestamped etc. So I need to have a name that is unique and of course the original name to know how to handle the file (pdf rip or parse csv, excel etc)

 

 

Categories:
I have the same question (0)
  • Ed Gonzales Profile Picture
    4,531 Most Valuable Professional on at

    @Bukester - Have you already considered concatenating the ID and the Date/Time into a new key field?  Seems like that would always be unique, no?

     

    -Ed-

  • v-zhos-msft Profile Picture
    Microsoft Employee on at

    Hi @Bukester ,

    As the pic shown, you find two emails with the same 'Message Id'.

    Can you find the corresponding emails in your Outlook?

    Please check whether the two emails is the same one.

    I think the 'Message Id' is unique.

    You can use the below flow for a try, checking whether you can get two different emails with the same 'Message Id'

    Capture10.PNG

    Best Regards,

    Community Support Team _ Zhongys

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

     

  • Suggested answer
    RonaldS Profile Picture
    3 on at
    I had the same problem and I found that if you concatenate the messgeId with the conversationId, it also seems to produce unique keys.
     
    Good luck, Ronald

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Introducing the 2026 Season 1 community Super Users

Congratulations to our 2026 Super Users!

Kudos to our 2025 Community Spotlight Honorees

Congratulations to our 2025 community superstars!

Leaderboard > Power Automate

#1
David_MA Profile Picture

David_MA 86 Super User 2026 Season 1

#2
Haque Profile Picture

Haque 55

#3
Ellis Karim Profile Picture

Ellis Karim 53 Super User 2026 Season 1

Last 30 days Overall leaderboard