[buddypress-trac] [BuddyPress Trac] #6930: Send emails async

[buddypress-trac]

#6930: Send emails async
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 Reporter:  DJPaul        |      Owner:
     Type:  enhancement   |     Status:  new
 Priority:  normal        |  Milestone:  Future Release
Component:  API - Emails  |    Version:
 Severity:  normal        |   Keywords:
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 Let's enhance `class BP_PHPMailer` to send emails async; otherwise, each
 email sent slows down page loading. @r-a-y mentioned this idea in a
 comment of an old email ticket, and with my effort in 2.5 for the email
 API changes, here's what I'd suggest we do to achieve this:

 * Update `BP_PHPMailer->bp_email()` and move the `$phpmailer->Send()`
 lines into a helper method, let's call it `send()`. Call this method,
 obviously.
 * Create a new subclass and re-declare `send()` -- instead of sending the
 email, somehow grab all the properties from the email object and the
 delivery class as necessary, and store that data in a temporary object
 somewhere -- probably a site option.
 * Implement a new WP cron hook that fetches all these options from the
 database, re-populate the various objects, and sends the email. Send a
 POST request off in `BP_PHPMailer_Subclass->send()` to trigger the cron.
 * Update filter `bp_send_email_delivery_class` to use the new subclass.

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/6930>
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