How to Test Which Follow-Up Messages on LinkedIn Works Best?

Oct 14, 2025

Are you tired of sending thoughtful LinkedIn messages only to be met with silence? You're not alone. Many professionals complain, "most of the time I do not get answers from private messages I send." This frustration often stems from using a "pray n spray approach," which simply doesn't work in a crowded professional network.

The native LinkedIn inbox is chaotic, making it easy for your message to get lost. Without a strategy, follow-ups can feel spammy or desperate—a common concern for users who "don't care about looking bad at this point" but still want to be effective.

The key to breaking through the noise isn't sending more messages, but sending smarter ones. The most successful communicators on LinkedIn don't guess what works—they test it systematically.

This guide will walk you through the exact process of A/B testing your follow-up messages on LinkedIn. We'll cover how to structure your tests, what to measure, and how to use the results to systematically increase your reply rates and build more meaningful connections.

The High Stakes of the Follow-Up: Why It's Crucial to Get It Right

Following up is non-negotiable for success on LinkedIn. Consider this: only 2% of deals are made on the first contact. Consistent follow-ups are essential to transition passive connections into active conversations.

Research from Expandi shows that a structured follow-up sequence dramatically improves reply rates. While the first follow-up might see a small dip, the second follow-up can boost replies by +4.05%, with diminishing returns after that.

Yet many professionals continue to make these common follow-up mistakes:

  • Generic Templates: Using messages that lack personalization and context

  • Pushy or Demanding Tone: Coming across as desperate or entitled

  • Poor Timing: Following up too quickly or waiting too long

  • No Added Value: Simply "checking in" or "bumping this up" without offering anything new

  • Lack of a System: Not tracking who you've messaged, when, and what you sent

To test which follow-up messages truly work best, you first need to understand what makes a good follow-up in the first place.

Is Your LinkedIn Inbox Sabotaging Your Outreach?

The Anatomy of a High-Performing Follow-Up Message

A successful test starts with a strong foundation. Before you begin testing, you need to understand the key elements of effective follow-up messages.

Perfecting Your Timing

According to HoneySales, timing is crucial for follow-ups:

  • After a connection request is accepted: Follow up within 1–2 days

  • If a lead replied but then went silent: Wait 3–5 days

  • If they viewed your profile/message but didn't reply: Follow up in 2–3 days

  • After a meeting or call: Send a thank-you note within 24 hours

  • If there's no response at all: Wait 3–5 business days before the first follow-up

The Four-Part Structure of an Effective Follow-Up

Break down your follow-up message into four key components:

  1. Hook: A polite, friendly nudge

    • Example: "Hi {firstName}, just wanted to circle back in case my last message got buried in a busy inbox."

  2. Context: A brief reminder of who you are and why you're reaching out

    • Example: "We connected last week after the {eventName} event."

  3. Value: Offer something relevant and useful. This is critical.

    • Example: "I just came across this report on {topic} and thought you might find it insightful."

  4. Call to Action (CTA): A clear, low-friction next step

    • Example: "No pressure at all, but would you be open to a brief 15-minute chat next week to discuss this further?"

Follow-Up Message Templates to Get Started

Here are a few versatile templates you can begin testing with:

  • After Connecting: "Hey {first_name}, appreciate you connecting! I saw your recent post on {topic} and was curious how your team is approaching {challenge related to topic}?"

  • Follow-Up After No Response: "Hey {first_name}, just following up on my previous message in case it got buried. I thought this resource on {relevant topic} might be helpful for your work at {companyName}. Let me know what you think!"

Now that you understand the building blocks of an effective follow-up message, let's dive into how you can systematically test different approaches.

Your Step-by-Step Guide to A/B Testing LinkedIn Follow-Ups

A/B testing (or split testing) removes the guesswork by comparing two versions of a message to see which performs better against a specific goal. Here's how to implement this method for your LinkedIn follow-ups:

Step 1: Define Your Goal and Choose ONE Variable to Test

Your goal must be measurable (e.g., increase reply rate by 10%, book 5 more meetings per week).

Crucially, only change one thing at a time. Variables to test include:

  • Call to Action (CTA): Soft ask ("thoughts?") vs. Hard ask ("book a call?")

  • Value Offer: Link to a blog post vs. link to a case study

  • Opening Line: Direct and formal vs. casual and conversational

  • Message Length: A short, punchy paragraph vs. a more detailed message

  • Personalization Point: Mentioning a shared connection vs. a recent company announcement

Step 2: Segment Your Audience

Split your target list into two equal and random groups (Group A and Group B).

How Kondo helps: You can use a tool like Kondo to manage this effortlessly. Apply custom Labels like Test-CTA-A and Test-CTA-B to conversations. This keeps your test organized directly within your inbox, so you never lose track of who received which version.

Step 3: Create and Send Your Variations

Write Version A (your control) and Version B (your variation).

How Kondo helps: Save both messages as Snippets. For example, create snippets named ;followup-hard-cta and ;followup-soft-cta. This prevents typos, ensures consistency, and lets you insert the correct message in seconds using variables like {firstName} for personalization.

Step 4: Schedule and Manage Follow-ups

Don't let follow-ups slip through the cracks.

How Kondo helps: After sending your message, hit 'H' to set a Reminder (Snooze) for a few days later. The conversation will disappear from your inbox and reappear at the top when it's time to follow up, ensuring perfect timing without relying on external calendars.

Step 5: Track and Analyze the Results

After a set period, measure which version achieved your goal more effectively. Did Version A or B get more replies?

How Kondo helps: As replies come in, use Labels to track outcomes (e.g., Replied-Positive, Meeting-Booked). For more powerful analysis, set up Kondo's CRM & System Sync to automatically push conversation data and labels to a Google Sheet, Notion, or your CRM (HubSpot, Salesforce, etc.). This creates a dashboard where you can see hard data on which messages are truly driving results, moving you far beyond manual counting.

Step 6: Iterate and Optimize

Once you have a winner, that message becomes your new control (Version A). Now, pick a new variable to test and repeat the process. Continuous improvement is the goal.

Advanced Tactics to Maximize Your Reply Rates

Once you've mastered the basics of A/B testing your follow-ups, you can experiment with these advanced tactics to further boost your response rates:

Use Voice Notes for a Personal Touch

Voice notes are personal, hard to ignore, and show extra effort. LinkedIn's desktop site doesn't support sending them, forcing you to switch to your phone.

How Kondo helps: Kondo lets you record and send Voice Notes directly from your desktop. Just press 'V' to record. This is a game-changer for professionals who want to add a personal touch without disrupting their workflow.

Test this approach against text-based messages to see which drives higher engagement. Many users report that voice messages can significantly increase response rates for important follow-ups.

Engage Beyond the Inbox

A good follow-up strategy is multi-channel. Before sending a message, like or comment on their recent post. This warms up the interaction and shows genuine interest.

You can test whether a follow-up message preceded by engagement with their content performs better than a standalone follow-up.

Master Your Inbox with the "Inbox Zero" Philosophy

You can't run effective tests in a chaotic inbox where messages get buried. The goal of Inbox Zero is to treat your inbox like a to-do list, processing every message.

How Kondo helps: Kondo is built for this workflow. Use lightning-fast Keyboard Shortcuts to process your DMs:

  • E to Archive (Done)

  • H to Snooze (Follow up later)

  • L to Label (Organize/Track)

This disciplined approach ensures no opportunity is ever missed and your tests run smoothly.

Conclusion

Stop guessing and start testing. The difference between a failed and successful LinkedIn outreach strategy lies in a systematic, data-driven approach to your follow-up messages.

Remember the core loop: Define your goal, choose one variable, segment your audience, create variations, track your results, and iterate.

Your time is too valuable to waste on strategies that don't work. Start with one simple A/B test this week—for example, test a soft CTA against a hard CTA. By making small, continuous improvements, you'll dramatically increase your chances of getting a reply.

And if you need to bring order to the chaos, tools like Kondo are designed to streamline this entire testing workflow, from organization and scheduling, to execution and analysis, transforming your LinkedIn inbox from a source of frustration to a powerful engine for connection and opportunity.

Frequently Asked Questions

What is A/B testing for LinkedIn messages?

A/B testing, or split testing, is a method of comparing two different versions of a LinkedIn message against each other to determine which one performs better. This data-driven approach helps you systematically improve key metrics like reply rates by sending a control version (A) to one segment of your audience and a variation (B) with a single changed element to another.

Why are my LinkedIn follow-up messages being ignored?

Your LinkedIn follow-up messages are likely being ignored due to common mistakes like using generic templates, having a pushy tone, poor timing, or not providing any new value. A "pray n spray" approach without personalization or a clear strategy often results in your message getting lost in a chaotic inbox or being perceived as spam.

How often should I follow up on LinkedIn?

The ideal follow-up frequency on LinkedIn depends on the context. As a general rule, follow up within 1-2 days after a connection request is accepted. If there has been no response at all to your initial message, wait 3-5 business days before sending your first follow-up. Subsequent follow-ups should also have a similar waiting period to avoid being perceived as too aggressive.

What is the best variable to A/B test first in a LinkedIn message?

The best variable to test first is often the Call to Action (CTA) because it directly impacts the desired outcome of your message. You can test a "soft" ask (e.g., "What are your thoughts?") against a "hard" ask (e.g., "Are you free for a 15-minute call next week?") to see which generates more positive replies and meetings.

How can I track the results of my A/B tests on LinkedIn?

You can track A/B test results by manually recording sends and replies in a spreadsheet or by using a dedicated tool that integrates with your LinkedIn inbox. For a more streamlined process, tools like Kondo allow you to use labels (e.g., Test-CTA-A, Replied-Positive) to tag conversations and sync that data to a Google Sheet or CRM, creating an automated dashboard to analyze performance.

Can I send a voice note as a follow-up on LinkedIn?

Yes, sending a voice note is an excellent advanced tactic for a follow-up message on LinkedIn. Voice notes add a personal touch that can significantly increase engagement and reply rates. While the native LinkedIn desktop site doesn't support this, tools like Kondo enable you to record and send voice notes directly from your computer, making it a powerful variable to test against traditional text-based messages.

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