Fix Acrobat 'No Default Mail Client' Error with Outlook
Question details
The user is unable to send a PDF as an email attachment directly from Adobe Acrobat Reader due to a default mail client recognition error.

- Product
- Adobe Acrobat Reader DC 2020, Microsoft Outlook 2013
- Device & OS
- Windows 10
- Scenario
- Attempting to attach and send a PDF document via email directly from within the Adobe Acrobat application using Microsoft Outlook.
- Observed behavior
- Acrobat displays an error message claiming there is no default mail client configured, even though Microsoft Outlook is already set as the default email application in the system.
Ensure you have your Outlook account login credentials handy and save any ongoing work in both Adobe Acrobat and Microsoft Outlook before adjusting application preferences.
Re-add Outlook as the Default Mail Client in Acrobat Preferences
Force Acrobat to properly recognize Microsoft Outlook by removing and re-adding the email account profile within the application's preferences.
Often, the connection between Adobe Acrobat and the system's default mail app becomes desynchronized. Refreshing the email account settings directly inside Acrobat's preferences usually resolves this communication error.
Launch Adobe Acrobat Reader DC. Click on 'Edit' in the top menu bar, and select 'Preferences' from the dropdown list.
In the Preferences window, look at the left-hand panel and click on 'Email Accounts'.
If Microsoft Outlook is listed under the accounts, click to highlight it, and then click the 'Delete' button to remove it.
Click the 'Add Account' button, choose 'Microsoft Outlook', and ensure the box to 'Make Default' is checked. Click 'OK' to save your settings.
Close both Adobe Acrobat and Microsoft Outlook completely. Reopen them and attempt to send the PDF file again.

Verify Windows 10 Default App Settings
Ensure that Windows 10 system settings correctly identify Outlook as the primary mail client, which Acrobat relies on to execute email commands.
Use WPS PDF to Seamlessly Email PDF Documents
Bypass the Adobe Acrobat configuration errors entirely by using WPS Office. With its built-in PDF reader, you can easily view, edit, and email PDF attachments directly through your default mail client without dealing with complex application settings.
- 1. Open WPS Office: Launch WPS Office and open your PDF document using the built-in WPS PDF tool.
- 2. Click the Share Icon: Navigate to the top toolbar and click on the 'Share' or 'Email' icon located in the quick access menu.
- 3. Send via Email: Select 'Email as Attachment'. WPS Office will automatically draft a new message in your default mail client with your PDF already attached and ready to send.

Frequently Asked Questions
Why does Acrobat say there is no default mail client even when Outlook is running?
This typically happens due to a miscommunication between Acrobat's internal preferences and your Windows registry settings. Removing and re-adding the account in Acrobat's Email Accounts preferences usually refreshes this connection.
Can I use a webmail account like Gmail instead of Outlook in Acrobat?
Yes, you can configure webmail accounts. Go to Edit > Preferences > Email Accounts in Acrobat, click 'Add Account', select your webmail provider (like Gmail or Yahoo), and follow the prompts to log in.
What if the default mail client error persists after resetting Acrobat preferences?
If the error continues, you may need to run a Quick Repair on your Microsoft Office installation via the Windows Control Panel, or reinstall Adobe Acrobat to fix corrupted registry keys related to default application associations.




