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09-09-2025 08:01 PM
When you create an email from the case form, you can compose it in a new tab.
I want to implement a mechanism where, if you attach a file in that tab and its size exceeds 18MB, a popup appears.
How can these be achieved?
Solved! Go to Solution.
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09-09-2025 09:24 PM
you can use before insert BR on sys_attachment table and block the insert but you can't show the info message.
If my response helped please mark it correct and close the thread so that it benefits future readers.
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader
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09-09-2025 09:03 PM - edited 09-10-2025 12:40 AM
Hello @hkriwk1,
Please refer below links:
Attachment size pop up
Attachment limit properties
Please Mark Correct ✔️ if this solves your query and also mark Helpful 👍 if you find my response worthy based on the impact.
Regards,
Shruti
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09-09-2025 09:24 PM
you can use before insert BR on sys_attachment table and block the insert but you can't show the info message.
If my response helped please mark it correct and close the thread so that it benefits future readers.
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader
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09-16-2025 02:01 AM
After looking into it a bit more, I found this.
https://www.servicenow.com/community/developer-forum/how-to-customize-the-send-button-of-the-email-c...
“email_client.do” seemed to be black-boxed.
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09-16-2025 02:34 AM
so ideally there is no way to handle this right?
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader