Uses Amazon's Simple Email Service (SES) to deliver emails for the Mailster Newsletter Plugin for WordPress.
Uses SendGrid to deliver emails for the Mailster Newsletter Plugin for WordPress.
Uses Mailgun to deliver emails for the Mailster Newsletter Plugin for WordPress.
Uses MailerSend to deliver emails for the Mailster Newsletter Plugin for WordPress.
Uses Mailjet to deliver emails for the Mailster Newsletter Plugin for WordPress.
Uses SparkPost to deliver emails for the Mailster Newsletter Plugin for WordPress.