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Chinese characters get omitted from Salesforce email attachment names

Date de publication: Jul 13, 2026
Description

When a user sends an email from a Salesforce record using the Send an Email button, Chinese characters in the file attachment name are dropped by the recipient. For example, if the attachment name is 卖家手册Seller Guide, the recipient only receives the file named Seller Guide — the Chinese portion 卖家手册 is removed.
This happens because the user's email encoding setting in Salesforce is not configured to support Unicode characters. Changing the email encoding to Unicode (UTF-8) resolves this issue.

Résolution

To fix this issue, change the email encoding setting in your Salesforce account to Unicode (UTF-8). This ensures that multi-byte character sets, such as Chinese, Japanese, or Korean, are preserved in email attachment names.

Change the email encoding setting in Lightning Experience

  1. Click your Profile Picture in the top right corner.
  2. Click Settings.
  3. Click Advanced User Details.
  4. Click Edit.
  5. Scroll down and change the Email Encoding field to Unicode (UTF-8).
  6. Click Save.

After saving, the characters in the attachment name should appear correctly for the recipient.

Change the email encoding setting in Salesforce Classic — Enhanced Setup Menu

  1. Click Your Name > My Settings.
  2. Click Personal > Personal Information.
  3. Click Advanced User Details.
  4. Click Edit and locate the Email Encoding field.
  5. Change the value to Unicode (UTF-8).
  6. Click Save.

Change the email encoding setting in Salesforce Classic — Non-Enhanced Setup Menu

  1. Click Your Name > Setup.
  2. Under Personal Setup, expand My Personal Information and click Personal Information.
  3. Click Edit and locate the Email Encoding field.
  4. Change the value to Unicode (UTF-8).
  5. Click Save.
Numéro d’article de la base de connaissances

000383874

 
Chargement
Salesforce Help | Article