Online Jos Case Converter

This is screen from gmail app on my iphone . letters 's' and 'a' are mails from my domain : sportroom.pl and there are lowcase and I haven't no idea why. Maybe something is wrong with my domain or server ?

and the second case is how to set picture for emails from sportroom.pl without creating account in google for every mail.

I looking for solutions the same as now has : Stack Overflow in gmail emails appear with icon from this address

Is there a way to make the buttons on an Android notification lowercase (instead of all capitals), without building a custom notification 'from scratch'?

In this example, the "REPLY" and "ARCHIVE", would become "Reply" and "Archive":https://i.stack.imgur.com/TW17I.png

Edit

So I don't really know what I am doing here. But one thing that I tried, was to modify various style templates (50+, basically every single one I thought might be involved), to look like this

  <style name="TextAppearance.Compat.Notification" parent="@android:style/TextAppearance.StatusBar.EventContent">  <item name="android:textAllCaps">false</item>  </style>

This did not work. However, because I do not know what I am doing exactly, I may have made a mistake. Any advice on this approach is also appreciated.

Is there a way in bash to convert a string into a lower case string?

For example, if I have:

a="Hi all"

I want to convert it to:

"hi all"

The data contained in a column is stored in uppercase.Is it possible to automatically update all of the data in this column SYSLOCE2 with lowercase letters?

|---------------------|------------------||          ID         |     SYSLOCE2     ||---------------------|------------------||          1          |       SAMPLE     ||---------------------|------------------||          2          |       PEOPLE     ||---------------------|------------------||          3          |       HELLO      ||---------------------|------------------||          4          |       WORLD      ||---------------------|------------------|

In one of my interview, the interviewer asked me why the upper case letters are before the lower case letters in ASCII table, I searched on google.com but found nothing, could anyone gave me the answer? Thx a lot!