The day a 5-second delay changed my email open rates

I was tweaking subject lines for a client's campaign last month and accidentally added an emoji at the last second. Open rate jumped from 12% to 23% on a 500-person list. Has anyone else seen big swings from tiny changes like that?

3 comments

3 Comments

simon7171mo ago

That 500-person list - was it a segmented or cold list? Seems like the emoji might have worked better on a warmer audience vs random subscribers.

lisak261mo ago

Oh man, emojis are basically the online version of how I dress for different occasions. You wouldn't wear a tuxedo to a backyard barbecue, right? Same idea with email tone. Cold lists are like walking into a room full of strangers and shouting a punchline. It just lands weird. Warm lists already know your vibe, so a smiley face feels natural, like joking with a coworker you've known for years.

kai_park10d ago

Isn't 500 people a pretty small sample size for drawing big conclusions? A 23% open rate on 250 people could easily be a fluke if they were already engaged subscribers. @lisak26 has a point about matching tone to the audience, but I'd argue those emojis are working precisely because the list was cold. Cold lists often need something to snap people out of their spam filter autopilot, and an emoji acts like a bright colored flyer on a crowded bulletin board. I've seen clients ruin warm lists with emojis because loyal readers start seeing them as desperate or unprofessional.