If you would like to select multiple emails in the Mail app, usually tap "Edit", tap any bubbles next to the emails, highlight them, move them, or throw them in the trash , In iOS 13, however, there is a much faster way to do this on your iPhone.
If you continue to tap Edit, select all the bubbles next to the emails you want and do the action I personally will for sure ever do, unless I choose emails here and there out. Whenever you want to pick a group of emails with one email behind the other, you can swipe the group faster.
After clicking "Edit" in an Inbox, Folder, Filtered Results, or Search, move your finger up or down over the bubbles next to the emails to automatically highlight them. Simply push, release when all emails are selected, and perform the intended action as usual. But that's not all: there is an even faster way.
Instead of pressing "Edit" in the Apple Mail app, you can select multiple emails with two fingers at once. Move two fingers up or down from the first email you want to select, and then release if you want all the messages selected. This is really fast. Select, move or delete as needed.