Self-deleted email account & reusing the address question

Self-deleted email account & reusing the address question

Hello,

when I deleted an Email account (my own domain via the control panel)  I then  tried to  use the deleted address as an “Email Alias”   a pop up window informed me that  “this Email id already exists”  even though I had eliminated it:

Is this a permanent feature or is it a question of waiting a few hours for Zoho to do its “housecleaning” before being able to reuse the address.

Thanks for any info for this.