We are running a mass mailing from CiviCRM using the Sparkpost Extension. The cron job will only send 400 emails per execution. Is this a limitation of CiviCRM? How do we increase it?
Environment: WordPress 4.6.1 running Canvas-child theme. CiviCRM 4.7.13
At Administer > CiviMail > Mailer Settings (civicrm/admin/mail) you will find settings for CiviMail delivery.
Do your settings have a Mailer Batch Limit of 400? If so, this was probably set on your site at some point.
The default is 0 (unlimited) I think; if it was set to 400 on your site this may indicate the task was timing out before completion. If you're having that issue, running the mail task more frequently may be a good alternative to adjusting the batch limit.
