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Base64 from Outlook email attatchment

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Posted on 11 Feb 2020 03:12:33 by mrpowergage

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Hi,

I'm stuck trying to get a email attatchment image to base 64.

I'm attempting to set a variable with the Attachments Contents ['contentBytes'] dynamic content, which I'm intending to use base(64) to give me the output I need. But I get this error:

Unable to process template language expressions in action 'Set_variable_3' inputs at line '1' and column '29003': 'The template language function 'base64ToString' expects its parameter to be a string. The provided value is of type 'Null'. Please see https://aka.ms/logicexpressions#base64ToString for usage details.'.

In case this is anythning to do with it: when I look at the output from the tigger strangely it says that has attachement is false, however there is an attachments as you can see.

Any help appreciated.

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v-bacao-msft on 18 Feb 2020 at 02:16:57

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Re: Base64 from Outlook email attatchment

Hi @mrpowergage ,

Sorry for my late reply!

I have tested it on my side, but there is nothing abnormal, Flow can run normally, the following is my Flow configuration. Include Attachment is set to Yes, Has Attachment is set to No.

It is worth noting that if you add a picture to the email body, the result of Has Attachment will be false, because the picture in the email body is not recognized as an attachment. But it can still be obtained by Flow, as long as you set the Include Attachment to Yes.

If it is an image added using Attach File, the result of Has Attachment will be true.

The above premise is that the Email body or the attachment contains pictures, then the Set variable action can be executed normally. Please ensure that such conditions are met.

Please try to recreate a similar Flow and try again.

Best Regards,

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mrpowergage 232 on 13 Feb 2020 at 05:51:32

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Re: Base64 from Outlook email attatchment

Hi @v-bacao-msft any update on this? thanks

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mrpowergage 232 on 11 Feb 2020 at 08:25:08

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Re: Base64 from Outlook email attatchment

Thanks @v-bacao-msft

Please try setting Include Attachment to Yes.
makes no difference.

Here is the top of the flow. I get the error on set variable 3.

The Value in Set Variable 3 is: @{items('Apply_to_each_3')?['contentBytes']}

Thanks for your help.

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v-bacao-msft on 11 Feb 2020 at 07:45:13

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Re: Base64 from Outlook email attatchment

Hi @mrpowergage ,

Please try setting Include Attachment to Yes.

Please also provide a screenshot of the Flow configuration so that we can provide you with a suitable solution.

Best Regards,

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