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Automatic reply outlook error invalid 64 base

I created a flow that automatic replies to e-mails. It was working fine yesterday but today everything is failing.

It's getting me this message "Invalid base64 string for MIME content." there's no attachment to my reply it's just text on the messge's body. I'm not sure what's happening, I haven't changed anything on my model.

Solution Sage
Solution Sage



If you have any rules configured on your mailbox can you please try de-activating and re-try the send email option again.


Also I would suggest you to use the Mail connector and try once instead of the standard Office 365 send email



If the above steps don't help you please try creating a new connection on your email action card and re-try running the once once done.


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