Cross-Channel, New feature

Boost Your Email Conversion Rate with EmailLabs’ Automatic Follow-Up

Natalia Zacholska-Majer,  Published on: 14 November 2025

Booster EmailLabs

Are your campaigns not engaging all recipients as you expect? Do they fail to open your emails or click on links, lowering your campaign effectiveness and email marketing ROI? This phenomenon is natural, but it can be effectively minimised.

That’s why we proudly present Booster – an innovative feature in the EmailLabs web app that automates follow-ups to unengaged recipients. This precision tool automates the key process: re-engaging contacts who may have missed your first message, increasing your Open Rate, CTR, and conversion.

What is Booster And Why Should You Use It?

Booster is an advanced feature in the EmailLabs web app, designed to maximise the effectiveness of your marketing campaigns. The mechanism works by sending a second, single message (a follow-up campaign) only to those recipients who did not react to the initial send-out within your specified timeframe.

Booster in EmailLabs Pannel

Key Benefits of Automatic Follow-up

Booster is not just about automation it provides concrete, measurable benefits for your email marketing strategy:

  • Maximise effectiveness: You reach recipients who didn’t open the original message, recovering lost traffic and potential conversions.
  • Save time and resources: Full automation eliminates manual segmentation and the need to create separate follow-up campaigns.
  • Support cross-channel strategy: You can send the follow-up via a different channel (e.g., SMS after an email), increasing the chances of engaging recipients.
  • Track campaign performance: Booster helps you track the effectiveness of your follow-up campaigns in real time.

How Does Booster Work? Simple, in 3 Steps

The entire configuration process takes just a few minutes, and Booster handles the rest. Unlike manual segmentation, the EmailLabs Booster feature works fully automatically. You configure it once when creating your campaign in our web application.

  1. Create and set the rules: During the main campaign setup, you define the Booster’s dispatch condition (no open or no click) and choose the follow-up channel (email or SMS).
  2. The system monitors interactions: After the campaign is sent, EmailLabs tracks recipient behaviour in real time.
  3. Automatic follow-up dispatch: At your specified time (from 2 hours to 7 days), the system dynamically generates a list of unengaged contacts and sends the pre-configured reminder message.

How does Booster work?

Channels and Booster Conditions

You can customize the messages and details for each follow-up channel to maximize engagement.

Main Channel Follow-up Channel Dispatch Condition
Email SMS or email No open or no click
SMS SMS No click (message must contain a tracking link)
Push SMS No open or no click

Important Note: For campaigns where the primary channel is SMS, Booster can only monitor whether a tracking link was clicked. This is due to technical limitations; it is not possible to track SMS message opens.

Example: An email campaign with a discount code -> if the email is not opened, Booster sends an SMS reminder about the code’s impending expiry.

How Booster Increases The Open Rate And CTR of Your Campaigns

Booster is a direct mechanism to increase the overall Open Rate and CTR of your entire campaign, as it effectively increases views and clicks relative to a single, main send-out.

Benefits in Numbers (Indicative Industry Data):

Marketers using automatic follow-ups note significant metric improvements:

  • Open Rate (OR): An average increase of 20-30%*
  • Click-Through Rate (CTR): An average increase of 14-22%*
  • Conversions: A 10-18%* increase in business effectiveness*Based on industry analysis and market benchmarks.

Real-world Examples of Using Booster in Marketing (4 Scenarios)

Booster works best in situations where time, urgency, and email engagement are crucial. Below are 4 practical cross-channel applications in various industries.

Industry Scenario Channels Business Benefit
E-commerce Abandoned cart / Discount code: An email is sent with a reminder. If the email isn’t opened after 12h, an automatic SMS follow-up reminds them of the code’s expiry. Email -> SMS Finalising sales and recovering abandoned carts.
SaaS / Digital Products New feature announcement: An email is sent informing about new features. If unopened after 3 days, a second, dedicated follow-up email is sent with a different, more intriguing subject line. Email -> Email Increasing retention and faster adoption of new functionalities.
B2B Events / Webinars Last call before start: An email invitation to the webinar. If the recipient hasn’t clicked the confirmation link 24h before the start, an SMS follow-up is sent with a direct link to the webinar room. Email-> SMS Maximising attendance and reducing the no-show rate.
Retail / Beauty Time-limited promotion: An email promotional catalogue is sent. An SMS follow-up with a “last hours” message is triggered 6h before the sale ends if the customer didn’t open the email. Email -> SMS Using urgency (scarcity) to increase sales conversion.

Best Practices: How To Set Up An Effective Follow-up With Booster

Maximum effectiveness requires not just automation, but the right strategy. Follow these best practices to ensure your follow-up campaign yields the best results:

  • Change the subject line: Never send a follow-up with the same subject. Crafting effective subject lines is crucial – use stronger action language, emphasise the deadline, or add a new benefit.
  • Add extra value/benefit: Offer something more in the follow-up (e.g., an additional discount, free delivery, a short guide).
  • Test cross-channel: The Email-> SMS combination usually provides a significantly higher CTR, reaching the customer in their least crowded inbox.
  • Set optimal timing: 12-24h works best for e-commerce and high-urgency offers. 3-5 days is optimal for educational content or product announcements.
  • Avoid common mistakes: Eliminate pushiness and always add value. Remember to tailor your communication to the recipient to build trust.

Maximize your email deliverability and security with EmailLabs!

FAQ – Frequently Asked Questions

Does Booster Work With Sends Via The Email API?

No. Booster is a feature dedicated to bulk and marketing campaigns. It works only within the campaign creators available in the new EmailLabs web application (for panel sends). Our Email API is the platform’s strategic and key solution , specifically designed for high-deliverability, transactional communication and system sends, where the priority is the highest reliability and security.

Do I Have To Use a Different Channel For The Follow-up?

No, you can set up an Email -> Email follow-up. However, we recommend testing cross-channel (Email -> SMS) as it increases the chances of conversion.

Can I Cancel a Booster Dispatch After Setting Up The Campaign?

Yes, you have full control over the process and can cancel the planned Booster dispatch before it is automatically launched.

Ready for More Conversions?

Don’t let your messages be forgotten. If you are still using the older version of the panel, contact our Sales Team to discuss a fast and seamless migration to the new web application. Gain immediate access to Booster and other advanced tools that will help you maximize the potential of every campaign!

Create an account with EmailLabs today!

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