There is no applicable forum space limit at espiv.net. The total space of the server is limited and it is preferable to be correctly managed, meaning no large files images/videos/mp3 (you can upload them somewhere else and use a link, e.g. file.espiv.net) and generally considerate use.
How do I delete myself from an espiv mailing list?
With the name of the list being LIST_NAME, you must go to the address https://lists.espiv.net/cgi-bin/mailman/listinfo/LIST_NAME
and at the bottom you will find “To unsubscribe from LIST_NAME, get a password reminder, or change your subscription options enter your subscription email address:” (if the list has greek as a default language you will see “Για να διαγραφείτε απο μέλος της LIST_NAME, να δεχθείτε μια υπενθύμιση του κωδικού πρόσβασης,ή να αλλάξετε τις επιλογές της εγγραφής σας , εισάγετε την διεύθυνση email της εγγραφής σας”) fill in your listed email and click the “Unsubscribe or edit options” button. In the next page you will have a series of choices, one of which will be “Unsubscribe”. You click it and there you go. You will receive a confirmation email with a link and related instructions. If something goes wrong you can contact the administrator of the list or send a message at support[at]espiv[dot]net
How to login to your blog Dashboard
https://BLOG_ADDRESS/wp-login.php where BLOG_ADDRESS is the complete address of the blog (eg. foobar.espivblogs.net)
Is it possible to save sent mail into a Local Folder on my computer by using Thunderbird?
Yes and it is very simple.
From Thunderbird Menu → Edit → Account Settings below the email that you want to alter, you will see the “Copies & Folders” option, once you click that you will see several options appearing on the right. Select “keeping a copy” and on “Sent Folder on” select “Local Folders”. You can do the same for drafts and templates if you wish.