In the pop options window, maybe it would be good to have a "Check every x minutes" field added to the seconds field.
It would avoid the user calculating the number of seconds to make it 15 minutes for instance. 
<p>In the pop options window, maybe it would be good to have a "Check every x minutes" field added to the seconds field.</p><p>&nbsp;</p><p>It would avoid the user calculating the number of seconds to make it 15 minutes for instance. 
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