The only studies on the effectiveness of newsletters conducted in Romania:
- Inbox Review 2012: Developments in Email Marketing
- INSIDE 2011, 6th Edition: Trends in Email Marketing for 2010-2011
- Inbox Review 2010 - The Most Used Email Clients in Romania
- How Newsletters Were Read in 2009
- How Newsletters Were Read in 2008
- Inbox Design INSIDE 2008 - Study on the Distribution of Email Clients Used in Romania
- How Newsletters Were Read in 2007
- How Newsletters Were Read in 2006
- How Newsletters Were Read in 2005
- Email Usage Habits in Romania, 2004
- Analysis of Email Communication by Romanian Companies, 2004