Selecting Multiple Emails

Selecting Multiple Emails

All email software except Zoho has a group select system of choosing a group of emails, say for deleting.
 
Usually you click an email, hold down "Shift", then move the mouse to another email and click, and all the in-between emails are grayed out.  What is the point of being able to select all emails?  You want to select all the "rubbish" emails as a group and delete them.
 
There is another little issue.  I have just noticed there is no spell checker for this text.  Surely, Zoho can get up-to-date with everything.