Click the box next to an email with the sender you want to bulk.

Click the three dots.

Select Filter messages like these.

Adjust search parameters, then click Search.

Click the boxes to the left of the emails you wish to delete, or the box on top of all the emails if you wish to delete all of them.

Click the delete icon.

In the search box, type Before:(date), then enter.

Select the emails you want to delete by clicking the box to the left, or select all by clicking the box on the top of the column.

Repeat until they are all gone.

If you want to delete all of them at one time without previewing them, click Select all conversations that match this search.

Click starred in menu.

Delete no longer needed starred emails.

Un-star now unimportant emails.

Label any starred emails you want to keep.

Move starred emails to appropriate folders (see below for instructions).

Click unsubscribe by the emails address inside the email. OR

Scroll down to the bottom of the email and click unsubscribe. OR

Click the Mark as Spam exclamation point in the top menu.

Click on the email.

Click on the three dots.

Select Block.

Confirm selection.

Click the email you wish to move.

Click the folder with the move to folder with the arrow in the top menu.

Create a folder by typing in a name or select an already created folder.

Nest that folder within another folder by checking that option.

All folders are found in the menu on the left hand side.