Email Template With Japanese and Russian Characters Shows as '???' When Received

Ensure Your Emails Correctly Display International Characters (Japanese, Korean, Russian, Maori)

There are three places where encoding can be set. Check and update each one:
A. Change Classic Email Template Encoding to UTF-8

1. Click Setup.
2. In the Quick Find box, enter Classic Email Template, then click it from the results.
3. Locate the affected email template and click Edit.
4. Go to Encoding and select Unicode (UTF-8).
5. Click Save.

B. Change Lightning Email Template Encoding to UTF-8
Lightning Email Templates do not have an encoding option in the UI. Use the Developer Console to update the encoding field:

1. Open the Developer Console (Setup | Developer Console).
2. Click Query Editor and run the following SOQL query to find the affected template: SELECT Id, Name, Encoding FROM EmailTemplate
3. Identify the template ID from the results and update the Encoding field to UTF-8 using the appropriate Data Loader or Workbench update command.

C. Change Email Encoding on Personal Settings

1. Click your avatar.
2. Click Settings.
3. Click Language & Time Zone.
4. Update the Email Encoding field by selecting Unicode (UTF-8).
5. Click Save.