Hi there
My guess is even with SMTP relaying, you will get an attachment.
You could try the HTML notifications
Setting Up HTML Message Notification
The HTML notification is triggered based on the HTML notification device settings and is received on the configured email address.
The administrator can create or edit the content and format of the HTML notifications using notification templates, custom variables, and custom graphics. Unity Connection sends HTML notifications to an email server over SMTP in the IPv4 mode only.
Therefore, the administrator must ensure that the HTML notifications are configured over IPv4.
Users can configure different types of HTML notifications:
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HTML notification when a new voice message is received.
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HTML notification when a new missed call is received.
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HTML notification when a new voice message is received along with the summary of latest voice messages.
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HTML notification when a new missed call is received along with the summary of latest voice messages
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HTML notification at a configured time containing the summary of latest voice messages.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/11x/administration/guide/b_cucsag/b_cucsag_chapter_01011.html#ID-2415-00000124
Hope this helps
Cheers
Rath!
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