Who This Is For / When to Use
Use this article if you receive a popup error while sending a test email from an email campaign and the test message does not send successfully.
Error Message Description
When testing an email campaign, Kyrios may display the following popup message:
"An error occurred, please try again."
What to Check to Resolve the Error
1. Validate All Custom Values (Merge Fields)
If your email contains custom values (merge fields), confirm they are formatted correctly.
Requirements:
Custom values must use double curly brackets:
{{ }}Do not use single brackets
{ }Do not use triple brackets
{{{ }}}
Correct examples:
{{contact.name}}{{contact.city}}
Common causes:
Typos in field names
Extra or missing brackets
Referencing a custom field that does not exist
If even one custom value is invalid, the test email will fail.
2. Confirm the Test Email Address Format
Ensure the email address used for the test send is valid and properly formatted.
Valid format example:
Invalid examples:
Missing
@symbolMissing domain extension (e.g.
.com)Extra spaces before or after the email address
Kyrios will reject the test send if the email format is invalid.
Common Issues and Fixes
Issue: Test email fails immediately with no additional details
Fix: Review all custom values in the email body and subject line for formatting errors.
Issue: Error occurs only on specific campaigns
Fix: Compare the campaign content against a working email and remove or correct invalid merge fields.
Issue: Error occurs even with plain-text emails
Fix: Double-check the test recipient email address for formatting issues.