70% of emails traffic in Q2 2013 was spam

"The percentage of spam in total email traffic increased by 4.2% from the first quarter of 2013 and came to at 70.7%.
The percentage of phishing emails in total mail traffic fell by 0.0016% and came to 0.0024%.
Malicious attachments were detected in 2.3% of all emails — that’s 1% less than in Q1 2013."

Source:  SecureList, 5th August 2013