Bulk Delete Emails In Gmail

Question

I have a label where I get my all server alerts, and I did not check counts for a while, now it is over 600,000 and when I am trying to bulk delete it, it gives an error like below.

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and is there any way to automatically delete emails in any label after 15 days.

I am using G Suite email address.

Answer 1

• type in search: label:YOUR_LABEL_UNDER_WHICH_YOU_HAVE_ALL_THOSE_EMAILS
• click on the arrow next to the checkbox and select All
• click on delete (trash can icon)

Answer 2

1. Select All then

2. Click on the link "Select all elements that match this criteria"

3. Click the Delete element