Hello Super User,

Good day too
First you can modify the email template from your backend > Easyblog > Setting > notifications > Email Templates > email.blog.new.text.php - Edit ,
see my screenshot : http://screencast.com/t/WM5pCo0pl8Xz
The file locate in your folderJoomlaFolder\components\com_easyblog\themes\default\email.blog.new.text.php
Example : if you want to change this inside the content "This is a notification to inform you that there is a new blog posted on the site." , this content is under "COM_EASYBLOG_NOTIFICATION_NEW_BLOG_POSTED" , so you have to find this from JoomlaFolder\language\en-GB\en-GB.com_easyblog.ini
Hope this help.

Dear Arlex,
I have installed the Greek language.
So I use el-GR.com_easyblog.ini
but sometimes it appears to me in English this notification

Some text I get in English and some text in Greek

Hello Super User,

That was because the Greek language haven't translated to 100% yet ( https://opentranslators.transifex.com/projects/p/easyblog/language/el_GR/ ), so some of word will showing English language. But you also can manually update it by your own, for example just you attached that image, find this word "If you did not perform the above action, please click on the unsubscribe link below to cancel the subscription." from your English language file in editor(Notepad ++, Sublime, or etc), so the result is "COM_EASYBLOG_NOTIFICATION_SUBSCRIBE_CONFIRMATION_NOTICE" -> http://screencast.com/t/qnmv5dty

Go find this language string in your Greek language file "COM_EASYBLOG_NOTIFICATION_SUBSCRIBE_CONFIRMATION_NOTICE" then translate it to Greek language.

COM_EASYBLOG_NOTIFICATION_SUBSCRIBE_CONFIRMATION_NOTICE="If you did not perform the above action, please click on the unsubscribe link below to cancel the subscription."

Hope this help.