For email delivery rewards, you have the option to send them via your own SMTP server. An SMTP server is a mail server that you can use to send an email from your own customized domain, instead of the standard rewards@reward.tremendous.com. The server stores your messages and ensures that your messages are either delivered or returned to you with a failure message.
Please note that this feature is limited to enterprise clients. If you'd like to set up a custom SMTP inbox, please reach out to clients@tremendous.com, and we'd be happy to assist.