Since this is something that is currently not possible, you could try changing the text directly in SD files, you can check what I found at: https://community.atlassian.com/t5/Jira-Service-Desk-questions/Customize-Welcome-email-for-Customers-and-Agents/qaq-p/1052902#U1055133
Hi Atlassian Community! This is Teresa from the Atlassian team. My colleague Paul Buffington @Buff and I are excited to share a brand new ITSM resource we’ve created – "The Complete Guide to At...
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