lundi 1 août 2022

Laravel SwitMessage add Reply-path header

We have a Laravel application which sends newsletters to customers. As per the client's request, we would like to add a header in the email indicating that it's a newsletter or mail to a list to avoid out of office email bounces. Upon research, I found that one way to do so is to add Precedence: bulk header. But answer also says that RFC 2076 discourages adding Precedence header. Some post recommend adding Return-Path: <> (a NULL Return-Path). However, I'm not able to add this header. I have tried following codes to add such a header but not working.

$headers->addTextHeader('Return-Path', ''); - Uses the mail id defined in config file 
$headers->addTextHeader('Return-Path', '<>') - This generates a malformed header as in the attached image
$headers->addTextHeader('Return-Path', ' '); - Adds a header like Return-Path   
< > but not sure if this is correct or it will create other issues


via Chebli Mohamed

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