[wp-trac] [WordPress Trac] #64368: `Could not instantiate mail function` errors sending mail in 6.9

[WordPress Trac]

#64368: `Could not instantiate mail function` errors sending mail in 6.9
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 Reporter:  desrosj       |       Owner:  SirLouen
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  6.9.1
Component:  Mail          |     Version:  6.9
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by siliconforks):

 Replying to [comment:32 zoe20]:
 > Is there any temporary workaround or patch available that resolves this
 issue while staying on WP 6.9?

 This comment includes code for a workaround that should make WordPress 6.9
 behave like previous versions when sending mail:

 https://core.trac.wordpress.org/ticket/64367#comment:5

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Ticket URL: <https://core.trac.wordpress.org/ticket/64368#comment:34>
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