Sending an email with variable number of attachments

[rjm]

I built a flow that drafts a specific type of email that my colleague sends out regularly. This email has to have PDF attachments that are pulled from one of our SharePoint libaries. Normally the emails contain two, but occasionally they contain three.

My issue is that the Send Email action fails if I've specified that there is an attachment name but instead the action receives a null value (since there is no attachment). 

What I'm looking for is a way to create a custom Send Outlook Email connector that has flexibility built into the attachments section - the connector might have room for five attachments, but if an attachment isn't supplied, it doesn't error out. Does anyone know how I could go about doing this?

I even started to recreate the entire email generator in PowerApps, but I found that PowerApps can't pass PDFs to the table it requires for adding attachments to an email (it can only handle media files with their content stored as BLOBs).

[v-zhos-msft · Accepted solution]

Hi @rjm ,

As you said, the pdf files are in a SharePoint library.

Are there other files you don't want to send as attachments in that library?

I have made a test on my side, I save the PDF files in one library without other files.

Expression reference:

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.

[rjm]

@v-zhos-msftThank you so much! I spent 30 hours trying to devise workarounds before you shared this with me. I didn't know supplying the attachments field with an array would get around the issue. The only change I made to what you described was that I entered "ContentBytes" instead of "ContentByte" (for any users who try this method). I really appreciate the help.

[Yemata]

@v-zhos-msft 

You saved my life!!! the reference link cleared up my confusion. Thank you!