Install Claws Mail. 
In this tutorial we will show how to install Claws Mail on Ubuntu.


1. Open Ubuntu Software Center and search for Claws Mail

2. Check the optional add-on for installing plugins and then choose Install

3. Go to Configuration and then Create new account

4. Enter the information and then choose ok.
Mail adress: your email-adress (for instance usertest@countermail.com that we are using in this tutorial)
Protocol: IMAP4
Server for receiving: imap1.countermail.com
SMPT server (send): imap1.countermail.com
User id: Your email-adress (for instance usertest@countermail.com that we are using in this tutorial)
Password: Your IMAP-key which you can find by following this guide https://support.countermail.com/kb/faq.php?id=90

5. Now go to Passwords and Keys to import your public- and private key.
You can find your public- and private key by following this guide https://support.countermail.com/kb/faq.php?id=90

6. Go to File and then Import

7. Choose your public key and then choose open.

8. Choose Import

9. Go to File and then Import again

10. Choose your private key and then choose open.

11. Choose Import

12. Now it should look something like this (with your adress and any aliases).

13. Now we need to install the PGP-plugins for Claws Mail to be able to encrypt and decrypt emails.
Go to Configuration and then Plugins

14. Choose Load

15. Select these three, pgpcore, pgponline and pgpmime. You need to select one at the time and repeat the procedure.

16. Now it should look something like this. Then choose close.