Mail Flow stopped working. Was working perfectly until yesterday. Possible Bug.

[Anonymous]

I have a very simple flow.

Goes from PowerApps -> Mail 

Everything was working perfectly until 20 hours ago. Was there some update or something? Since then all my flows started to fail.

The error it says is that the email is not correct for all of them. However some of them had flows triggered before and it worked. Moreover I am 100% certain that the email is correct.

Here is what i get in the output

Headers:

{
  "X-Frame-Options": "DENY",
  "Access-Control-Allow-Origin": "https://sendgrid.api-docs.io",
  "Access-Control-Allow-Methods": "POST",
  "Access-Control-Allow-Headers": "Authorization,Content-Type,On-behalf-of,x-sg-elas-acl",
  "Access-Control-Max-Age": "600",
  "X-No-CORS-Reason": "https://sendgrid.com/docs/Classroom/Basics/API/cors.html",
  "Timing-Allow-Origin": "*",
  "Date": "Thu, 03 Aug 2017 17:37:33 GMT",
  "Server": "nginx,Microsoft-HTTPAPI/2.0",
  "Content-Length": "204",
  "Content-Type": "application/json"
}

Body:

{
  "errors": [
    {
      "message": "Does not contain a valid address.",
      "field": "personalizations.0.to.1.email",
      "help": "http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#message.personalizations.to"
    }
  ]
}

Error says that it does not contain a valid address. But before it used to work for the same people with the same email only started to happen 23hours ago. Any insight in to how to fix it would be great.

[v-monli-msft]

Hi @Anonymous,

Would you please try to recreate this app to have a test?

Regards,

Mona

[Anonymous]

Hi @v-monli-msft

I found the source of the bug.

So after the MAIL Send Email connector update it added ; to the TO field and when it takes email address it adds ; to the end and that is why it always fails ( I do not know why adding ; would cause issues since some mail clients are able to handle ; )

How to recreate the bug:

Go into Microsoft Flow and create new Flow

Add PowerApps as trigger and add Mail Send Email connector as action

Select the TO field and click Ask in PowerApps

This will add ; at the end. It will make your flow fail and send error that address is incorrect.

TO FIX:
Remove ; from the TO field

[v-monli-msft]

Hi @Anonymous,

I have reproduced this issue only in Mail action, not O365 outlook or others. I have noticed the pg about this. Thanks for your detailed steps.

Regards,

Mona