autofit Table Grid / Button for opening Email

Hello everyone,

first of all I have to thank you for your absolut amazing software.

I am trying to create a phonelist witch is synced with our active directory.
I wrote a small .batch file which stores our user attributes in the sqlite databse.

All works great, butt I asked myself:
Is there a way to autofit the Table Grid?

I created a little search.
Furthermore I want the ability to show only that information what the user want to see by activating a checkbox.
Thats why I wrote a SQL-statement like this:

"Select case when "{checkbox}" = "1" then "show data" else NULL end, and so on..."

All in all this solution works but if I deactivate the checkbox the table grid shows a row with zero data.
But I don´t want to see this blank row.

Do you understand my "problem"?
An additional reason is that this would save some space while showing lots of information.

Another question:

Is it possible to create an "Email-Button"?
I figured it would be nice if a user klicks on an emailadress (or button) and the local installed emailclient (e.g. Outlook) starts automaticly
and adds the Emailadress in the recipient place of a new Email.

Butt this is just a "nice to have" feature.

Thanks a lot!

Greetings from Germany

Dominik