Throttling sends
Most email providers have a limit on how many emails you can send within a given amount of time. By default, five mails per second will be sent. You can add throttling config to your mailer:
// config/mail.php 'mailers' => [ 'ses' => [ 'transport' => 'ses', // Throttling for 10 mails / second 'timespan_in_seconds' => 1, 'mails_per_timespan' => 10, ], ]