[wp-trac] [WordPress Trac] #63127: wp_mail resets custom headers when headers array is set to empty, causing loss of custom header data (e.g., boundary)

[WordPress Trac]

#63127: wp_mail resets custom headers when headers array is set to empty, causing
loss of custom header data (e.g., boundary)
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 Reporter:  regnalf       |       Owner:  (none)
     Type:  defect (bug)  |      Status:  closed
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Mail          |     Version:  6.7.2
 Severity:  normal        |  Resolution:  duplicate
 Keywords:                |     Focuses:
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Comment (by regnalf):

 Thanks @SirLouen

 But I wrote my own mail function that uses the PHPMailer class directly.
 This allows me to create the boundary and include images with cid id
 without any problems.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63127#comment:4>
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