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ggerla
ggerla
Level 3
September 10, 2024
Question

Problems with deliver vs bounced: false delivered or false bounced?

  • September 10, 2024
  • 2 replies
  • 2161 views

Hello guys,

I landed with a bunch of invalid emails and I was looking for the reason behind it.

I found a multitude of these logs:

  1. Email send
  2. Email delivered
  3. Email bounced (main reason: 550 [internal] [oob] The recipient is invalid) 

This process marks the email as invalid even if the person actually received the email.

 

 

The solution could be just right behind the corner, but does it make sense? I mean, I can just run a simple batch campaign every day and validate the invalidated ones, but I'd like to understand if you have some contraindications.

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2 replies

Ishita_Chawra
Ishita_Chawra
September 10, 2024

Hi @ggerla 

If you expand the Email bounced activity type, you'll see the error details - Details: 550 [internal] [oob] The message was blocked by the receiver.

And this document here explains it well what the error message indicates: Email bounces with error "550 [internal] [oob] The... - Marketing Nation (marketo.com) 

 

 

    SanfordWhiteman
    SanfordWhiteman
    Level 10
    September 10, 2024

    This process marks the email as invalid even if the person actually received the email.

    No, it doesn’t.

     

    Delivered doesn’t mean the person received the email. It means the person’s mailserver did not immediately reject the email at the SMTP level. That has nothing to do with whether it got any closer to the person’s inbox. If there’s a later bounce, that’s because the further scanning/routing determined the email was undeliverable. The email is thus invalid for marketing purposes.

      ggerla
      ggerlaAuthor
      Level 3
      September 11, 2024
      @sanfordwhiteman wrote:

      This process marks the email as invalid even if the person actually received the email.

      No, it doesn’t.

      I was thinking about that any email bounce with a certain error, would flag people as invalid.

       

      Anyway, I've discovered different cases where we have this behavior, where the user is actually receiving and clicking the email, visiting the website, and so on. Additionally, we have sales and mkt people who tell us some emails are real (due to direct contact).

       

       

      I'd like to understand maybe if there exists a chance of a spam firewall that is sending "Invalid recipient" just for discharging newsletter emails.

      Considering I had 49 people in August with emails delivered, bounced but then opened or clicked, I can consider maybe, in the worst of cases removing all the frequent domains, to exclude 30/40% of firewalls, I still have few people that could have an existing email.

      Ishita_Chawra
      Ishita_Chawra
      September 11, 2024

      Interesting! 

      Thinking about my case, where I get the quarantined email list everyday EOD where I review and release the one's I like to see. 

      It could be a similar scenario where the server is storing it for review and once receiver releases then it is considered opened or clicked.

      I'm curious to see what others have to say on this...

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