Send an email if issue is not assigned for a wile

[Ahmad]

Hello

Can I set something in JIRA service desk that will send a notification emails reminds Agents (or maybe other jira users as well), if an issue is submitted by a customer and has no agent's action to set an assignee for this issue for X period of time

eg. issue is submitted but no Agent assign this issue for last 24 hours.  A reminder email is required for this issue to be sent to All Agents.  

[Jack Brickey]

You need to set up an SLA and use Automation for when it breaches. If you need assistance  this LMK or check the documentation on setting up SLAs and Automation.