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When a new Email Arrives is getting Error

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Posted on by Testing1231

I have a flow that works but I need to add to it that if a new email arrives in an inbox with "Undeliverable: SUBJECT" (of email before) that it then sends another email. The original part of the flow sends an email that is texted to the users mobile phone number. The issue is that there are two carriers so if one carrier returns that it is undeliverable try the next one. Is there a way to try a new cell number if the other one is undelieverable?

We use both AT&T (number@mms.att.net) and Verizon (number@vzwpix.com)

It is not always clear which carrier people use and I want to send to AT&T and then if I get a reply that it is undeliverable then send it to Verizon.

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Building flows

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Nived_Nambiar 18,129 Super User 2025 Season 2 on at

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Hi @Testing1231

Does the carriers meant emails of recipients ?

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Testing1231 72 on at

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Yes- we use both AT&T (number@mms.att.net) and Verizon (number@vzwpix.com) It is not always clear which carrier people use and I want to send to AT&T and then if I get a reply that it is undeliverable then send it to Verizon.

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Testing1231 72 on at

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So I got the flow to work but the issue is that it ultimately tries the first email @mms.att.net and then tries the other one. This results in a lot of undeliverable messages in the email inbox. Is there any fix to this? @Nived_Nambiar

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Testing1231 72 on at

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Okay so really not a solution- so if anyone has any suggestions- I would greatly appreciate it. Right now, the flow checks if the numbers are AT&T and sends email using the @mms.att.net gateway if they are. If they cannot be found with that email then it tries the Verizon gateway.
What I end up with is two texts (one with AT&T users and one with AT&T and Verizon users. Is there a way to have the flow only run if all users have an email that works (so there would be just one text sent)? I am using apply to each.
There is still an email sent showing that the Verizon number is not deliverable.

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Testing1231 72 on at

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It is like I need a apply to each until all emails are found.

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Nived_Nambiar 18,129 Super User 2025 Season 2 on at

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Hi @Testing1231

I have one idea, But need your help in confirming that.

Let's say you sent an email and that is undeliverable. Could you use outputs() function after that send email to see json response like below

Hope we will get some hint 🙂

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Testing1231 72 on at

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So I think that worked to get only one text sent! But still have the issue of numbers that are Verizon are sent and then returned undeliverable- The amount of undeliverable emails would be a lot and would like to avoid this, if possible-
Step 1Step 2Step 3Step 4

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Testing1231 72 on at

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Everything works (meaning it sends just one text with verizon and AT&T numbers combined into one text) but is there anyway to get rid of the undeliverable Verizon numbers (the flow first tries these numbers in the gateway @mms.att.net and then tries verizon. I can always filter the undeliverable messages to a folder but was hoping for a work around so I don't get these at all. Thanks!

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Nived_Nambiar 18,129 Super User 2025 Season 2 on at

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@Testing1231

There is some api s which can validate emails , but i think some of them are paid.

What i think is the output() will return the output of action, so let's see what would be status code present inside output if message is undelivered ?

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Testing1231 72 on at

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Well for the life of me, I cannot figure out why this flow works. It does end up sending one text and includes the verizon and att numbers. The status code is 200 for all of the people. And then even when I look at my sent mail, it only show all three numbers with AT&T gateway yet all three people are a part of a group text with the appropriate verizon or AT&T being used.

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