REST API is not yet supported for this mailbox. This error can occur for sandbox (test) accounts or for accounts that are on a dedicated (on-premise) mail server.

(0) Share

Report

Posted on by Community Power Pla...

Dear all,

About 1,5 years ago I made an approval flow that was perfectly fine and did what it have to do.

Recently the flow started to fail at different stages of the process. The only pattern I found is that:

The flows always fails when a "send email"-action is executed.
The error message is always the same, "REST API is not yet supported for this mailbox. This error can occur for sandbox (test) accounts or for accounts that are on a dedicated (on-premise) mail server..."

Do you have any idea what causes this issue and how I can resolve it? This would be so great!

Thanks in advance.

Best regards,

AVH

Categories:

Using flows

I have the same question (0)

All responses (4)

Answers (0)

ScottShearer 25,278 Most Valuable Professional on at

Like (1)

Report
Copy link

Link copied!

@Anonymous

I suspect that you are using the old version of the Send an Email action. You might try replacing the email actions with V2 email actions.

Was this reply helpful? Yes No
Community Power Pla... on at

Like (1)

Report
Copy link

Link copied!

Hi Scott,

Thanks for your reply.

I will try to replace my send email actions with the newer ones. Is there a way to just simply update them or do I have to replace them one by one?

Best regards,

AVH

Was this reply helpful? Yes No
Community Power Pla... on at

Like (1)

Report
Copy link

Link copied!

I have this issue as well. Was there a recent update? Mine worked 6 days ago and now don't. No changes to the flow since then. My connections are all office 365 outlook (send an email v2) and I'm using Dynamic Content to pull a valid email. The output shows the email used. I've tried other emails even static emails without dynamic content and all give errors.

Was this reply helpful? Yes No
JenniferDC 2 on at

Like (0)

Report
Copy link

Link copied!

I'm using the action labeled Send an email (v2). It worked when I first created it and tested multiple times.
One week later it stopped working.

I had previously tried Send an email (V3), but that one never worked for me, which is why I switched to Send an email (V2).
I'm not sure if my organization users test accounts or on-premise mail servers, which is mentioned in the error message. But, we are currently using Office 2016 for all internal Office applications.

Is there any solution for this?
The action that works best for me is Send me an email notification, but that only works if I am the owner of the form. In this case, someone else is the owner, and I'm using the FormID to call up the form.

Was this reply helpful? Yes No