💡 Generally speaking, contact form plugins and shop systems use the wp_mail () function (sometimes called PHP mail) to send messages. At Raidboxes, this function is limited to 250 emails within 24 hours.
To ensure that order confirmations or contact forms are sent properly at all times, you need to use a mail server and configure it with an SMTP plugin.
SMTP plugins allow you to intercept the messages that are sent via wp_mail (), configure them to your liking and redirect them to your mail server. You can find out how you can use an SMTP plugin in your Box here: SMTP plugins for sending emails.