Want more people to open your emails? A digital marketers’ personal take on subject lines.
In 2019, it is estimated that over 293 billion emails were sent worldwide.1
By 2021, that number is projected to be over 319 billion.1
Even accounting for the estimate that just over half of those emails are likely spam2, this leaves around 144 billion emails to be sent in 2021, which is still an astonishing number.