While most experts will say there’s no such thing as the perfect time for email marketing to send your email offer or newsletter, conventional wisdom holds that Tuesday—generally speaking—is the best day for a campaign, and Friday the worst. “The theory behind the rule of thumb makes sense,” notes Caroline Ruggiero at the Marketo blog. “[E]mail too early in the week and people are too busy with their actual work to open or focus on your message. Email end of the week and your message will get buried in a barrage of messages everyone has to dig out of come […]