v0.6.0

Mailbox

Receive external email
Update contact name to each incoming email
Trash section: Add message 'Empty trash advice'
Thread Item Detail: Show all current participants by name if it exists
Thread Item Detail: Show email counter by thread
Email sent show message 'Email send' with its action

Email Detail

Download attachment, and open 'Download' folder when an attachment was downloaded.
Unsend email

Composer

First recipient suggestion is added with enter
Show incorrect recipients format
Add Non Criptext popup to email with non criptext users.
Recipient tags show name if this contact has name

Settings

Add sections: General, Account, Labels and Devices

Configuration

Save and show last window size that was opened.

*Fix issues