Overview
You may see an error when syncing an email from Knak to Marketo that contains an emoji. This happens because Marketo does not support every emoji. Marketo only renders:
ASCII characters
Unicode characters up to version 5.2
Many modern emojis were introduced after Unicode 5.2. These emojis can cause a sync error when sending emails from Knak to Marketo.
When This Error Appears
The error appears during the email sync process. Marketo blocks the email if it contains unsupported characters.
Why Some Emojis Fail
Marketo supports an older Unicode standard. New emojis fall outside this supported character set.
Because of this limitation:
Some emojis sync successfully.
Some emojis trigger a sync error.
Some emojis render as blank characters in email clients.
You can find more information from this external document from Marketo.
Fix an Emoji Sync Error
Follow these steps to resolve the error.
Open your email in Knak.
Locate the emoji in your email content.
Delete the unsupported emoji.
Replace it with a supported Unicode character.
Sync the email to Marketo again.
Find Emojis That Work in Marketo
Use trusted Unicode reference websites to copy supported characters.
Visit the following sites to copy Unicode symbols and emojis that work across most email clients:
Choose emojis released in Unicode 5.2 or earlier to avoid sync errors.
Best Practices
Follow these tips when using emojis in Marketo emails:
Use simple and widely supported emojis.
Avoid recently released emojis.
Test your email before syncing to Marketo.
Copy Unicode characters from trusted reference sites.
Need more help? Contact support via live chat using the chat bubble in the bottom right corner or email support@knak.com.