Bearing in mind you should send highly targeted campaigns only to people you know will be interested in your product or service, sending such ambiguous and bland subject lines is quite ridiculous.
Let’s look at some best practices for subject lines.
You are a fashion retailer who has segmented your list by gender, size and type of garments previously purchased (you can go much more granular than this). You’ve just taken stock of a number of summer dresses you want to shift quickly (while the sun is still shining). How would you write a subject line that really sells them?
The above example highlights the fact that temperatures are up and the products you sell are stylish (or hot), it also lets the recipients know you have their size in stock and if they order today, you will post it in time for them to wear it tomorrow.
There is no mention of a sale, no promise of cheap prices or free delivery (devaluing the product and reducing your margin), and it is packed with benefits that can be expanded in the body copy. There is a very good chance this email will be opened.
It packs quite a punch in 50 characters (the optimum length of subject line you should be aiming for). If you thought writing inspiring 140-character tweets was difficult, email marketing will definitely hone your skills.
Email marketing is template-driven, so it is incredibly easy to create multiple campaigns based on your subscribers’ previous purchase patterns (in this case, based on garment size). In this way you can tailor subject lines to make them more relevant and engaging, and more likely to encourage the recipient to read the full message.