What is a typical outcome if a custom field value is not provided in the email?

When a custom field value is not provided in an email, the typical outcome is that the tag associated with that custom field will not render any content. This means that if the system encounters a tag that references a custom field for which no value is available, it simply omits that tag from the email. This approach allows for cleaner formatting and ensures that the overall message remains intact without disruption.

For instance, if an email template includes a custom field for the recipient's name but that field is left empty in the database, the email will still be delivered without that specific tag appearing—rather than showing an error, default text, or sending the email as if that field had no significance. This behavior is particularly useful in maintaining the quality and professionalism of the email communications, ensuring recipients do not encounter errors or confusing placeholders.