How to set a custom header using phpmailer

email header phpmailer return-path
dravos picture dravos · Apr 29, 2016 · Viewed 33.2k times · Source

I am using phpmailer for sending emails, but I want to make a custom header for my company, by adding a textarea field that contain any custom header for example using a header like this one:

exemple of header or any other header types.. How can I do this , thanks in advance.

Answer

Henkealg picture Henkealg · Apr 29, 2016

You will need to do some discovery and modification of the default headers set by PHPmailer for this to be achieved.

You will need to use different functions to set/edit headers depending on the type of header you want to set/edit. Here are a few examples:

From:

$mail->setFrom('[email protected]', 'Mailer');

Subject:

$mail->Subject = 'Here is the subject';

Custom:

$mail->addCustomHeader('X-custom-header', 'custom-value');

In short, It is quite an effort to do this when the headers are free-typed in a text box. It is however doable with detection and validation on your side.

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