Do you know that your subscribers might get dozens of emails every day? As the email sender, you don't want yours to get lost in this jungle.

So, to get their attention, the very first thing you need to work on is the subject line (= the title of the book) as well as the beginning of your email content (= the first lines).

A catchy subject line

Based on the users' experience, we gathered the following 'rules' to write a good subject line:

• Tell the truth. That is obvious. Your subscribers are valuable customers, so don't fool them.
• It should not be too long. Fifty characters are ideal, but of course, it depends on your campaign topic.
• But not too short either. Don't write: 'Hello man'.
• It has to be clear: Don't babble and use fashion / complex words, stay simple and go straight to the point. Don't write something like: what if you can fly around? Get it, and you will know it (do you understand this?).
• Personalize it whenever it is possible (with your subscriber's name, for example).
• Avoid using aggressive colors (also valid for the email content), don't use red.
• Avoid capital letters: It will be considered as spam.
• Use the exclamation mark sparingly.
• Check any spelling/typo mistakes.
• Don't forget the subject line itself.

Test your campaign and improve it

A key element to success is to do several A/B tests for smaller segments.

For example, you can choose to:

• Change the subject line to improve your chance to get a better open rate (check out WordStream’s article about writing better subject lines).
• Modify the design/template.
• Write another body content.
• Vary the day and time to send your emails (in the morning/afternoon, on a particular day of the week etc.).

While doing an A/B test, you must choose to focus only on one parameter at the same time (if you want to test different subject lines, the rest - time, design etc. - should remain the same). Good luck!