How We Boosted Clicks by 20%: Inside Jooble’s Email Strategy

3 to 10 seconds — that’s all the time job seekers give your email before deciding whether to click or ignore. At Jooble, each message we craft has one purpose: to make the connection between jobs and candidates more effective. Every subject line is a calculated move by our product team because today, standing out in the inbox isn’t optional — it’s survival.

In this case study, we focus on customer retention in email channels. We show in detail, using the example of an experiment, how we raised the open rate and click rate from the lists.

Email Is More Than a Channel

Every day, millions of job seekers return to their search through our alerts.

We achieve this by running dozens of A/B tests weekly and learning fast. Thanks to our high daily send volume, we can validate ideas in less than 24 hours — creating the kind of rapid feedback loop most email marketers only aim for.

Increasing Open Rates With Inbox Psychology

Let’s imagine you open your inbox, and it’s a wall of subject lines: most are boring, some are spam, and a few spark curiosity.

We wanted Jooble’s emails to be those emails. The ones that make job seekers pause, click, and come back.

So we dug deep:

• Collected Hotjar feedback, asking users what makes a job email feel “relevant”
• Analyzed 3 months of unsubscribe reasons via our support team
• Ran a competitive audit across direct and indirect players

From this, we built a “Jobs To Be Done” map, clarifying user needs like:

“I want to receive jobs that match my Jooble search.”

“I want regular updates with fresh and relevant jobs.”

This is what the titles of the emails looked like in the inbox before our experiment:

Read also: ‘One Click Better’ Strategy: How the Small Change Boosted Active Subscriber Base by 16%

The Experiment: Make It Personal, Make It Specific

Then we decided to focus on only one thing: subject lines. They’re the first impression and the click-maker (or click-breaker).

Here’s what we changed:

• Added company names from newly posted jobs
• Highlighted specific job titles (also pulled from the job list in the email)
• Created rotating subject lines using different listings from the same message

And we’ve got a dynamic, personalized inbox presence:

• +9% open rate – more users noticed us
• +20% click rate – more users engaged.

The formula was simple: speak to real needs, and users respond.

Key Takeaways

1. Test fast, not perfect. Got a promising idea? Run the MVP version. Learning is better than guessing.
2. Make experiments tiny. The smaller the risk, the quicker the data.
3. One size never fits all. Subject line strategies must flex by country, market, and behavior. We personalize for our top markets — and keep things lightweight elsewhere.

Want More Visibility for Your Job Ads?

Our job alert emails aren’t just a channel for job seekers — they’re also a powerful visibility tool for employers. Each posting is distributed across 140,000+ sources, matched to relevant candidates, and highlighted in job alerts that reach users daily.

📩 Want to boost the performance of your job ads?

Contact our Sales Team to explore how Jooble can support your hiring strategy with smart, scalable solutions: sales.teamwork@jooble.team

The text was written in collaboration with Kseniia Soroka