The Legacy Email Composer includes its own validation process, located in the Review tab. Use this to ensure your message meets all requirements before sending or scheduling.
Quick Reference (Advanced Users) - Click to Expand
- Open your message in the Legacy Email Composer.
- Go to Review → Validate Message.
- Resolve all Errors, then review Warnings.
- Fix common issues such as missing sender details, missing address, or broken links.
- Finish your workflow in Review, Test and Send Your Legacy Email .
Open the validation panel
- Open your message in the Legacy Email Composer.
- Click the Review tab.
- Select Validate Message on the left.
The validation area lists:
- Sender details
- Subject
- Recipients
- Content issues
- Footer compliance (address + opt-out)
- Deliverability warnings
Understanding the validation icons
Each validation result appears with one of the following statuses:
| Error — must be fixed before sending. | |
| Passed — requirement is met. | |
| Warning — recommended but not required. |
Sender details
The Legacy Composer requires a valid From Name and From Address. Open the Address tab to update these fields.
Common legacy sender issues
- Personalized From unavailable - your list must contain Contact Owner Name and Contact Owner Email.
- Invalid From Address - select a verified address from the dropdown.
Subject line
In the Legacy Composer, the subject line is set in the Address tab. Validation will flag missing or blank subject lines.
Recipients
The Legacy Composer validates that a list or segment is selected in the Address tab. Add or change lists under To and Suppress Against.
Content validation
Legacy messages may produce warnings for:
- Broken or malformed links
- Missing images
- RSS blocks with no content
- Dynamic content requiring a fallback
Link troubleshooting: Testing Clickthrough Links
Anti-spam requirements
Your legacy email must include:
- A business name
- A physical mailing address
- An opt-out link in both HTML and plain text versions
Missing address
- Address undefined - account information not configured.
-
Cannot identify address - footer missing the address personalization (
{{Account.BIZ_ADDRESS}}).
Missing opt-out link
Legacy emails cannot send without an opt-out link unless they are transactional.
Update instructions: Add an Opt-Out Link
Plain text footer: Editing the Plain Text Version
Deliverability warnings
These do not block sending but should be reviewed:
- No test message sent
- No subscription category selected (when using subscription management)
When validation is complete
Once all errors are cleared, continue to: Review, Test and Send Your Legacy Email .