Setting up Mailbox Storage Quota Warning in exchange online

Question

I want to set a email triggered warning while one of our user's mail box storage reached to 50% or 80 % of space.

I already go through powershell command,
Set-Mailbox -Identity "user name" -IssueWarningQuota 400mb -ProhibitSendQuota 800mb -ProhibitSendReceiveQuota 98gb -UseDatabaseQuotaDefaults $false

but not getting required result.

Answer 1

For starters, you're using "mb" instead of "gb", if this is for Exchange Online the size of the mailbox will be in GB. If the mailbox size is 100GB and you want the warning to be sent at 50% usage, use this:

Set-Mailbox -Identity "user name" -IssueWarningQuota 50GB -ProhibitSendQuota 80GB -ProhibitSendReceiveQuota 98GB -UseDatabaseQuotaDefaults $false