Use the Ctrl key to toggle selected emails and Shift key to select a list of emails. You can then delete them or move them to other folders all at once by button or drag & drop.

Among the bug fixes there are two worth mentioning:

• The print styling has been fixed, so printed emails look great again. You can print an email by selecting your browser print option (shortcut Ctrl+P in most browsers).
• Non-latin characters in some translations had not been displayed correctly, e.g. in Polish. This has been fixed now.