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Email subject lines are a critical element in the battle to improve email open rates. A poorly constructed subject line can make or break a marketing campaign.

Length is important

For two reasons. Firstly because your reader is only going to devote two or perhaps three seconds reading your subject line, before deciding to open it or not. Secondly because in mail clients and especially on a smartphone, a subject line gets truncated.

Subject line exampleCount
Welcome to our monthly newsletter. Sign up for a free six months subscription today!84
Welcome to our monthly newsletter. Sign up for a free six mo..60
Welcome to our monthly newsletter. Sign..40
Welcome to our monthly newslette..32

The personal touch

An average office / lab based worker is typically receiving between 50 and 100 emails a day. If you don’t stand out, you won’t get picked out from the crowd. Personalisation of email subject lines has been shown to make the single biggest difference.

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There are many more simple things to watch out for. To find out more, please visit this page.

With apologies to Dr David Reuben.