Video is one of the fastest ways to grab attention in outreach, especially in LinkedIn messages. In lemlist, you can now attach videos directly to a LinkedIn Chat message step so prospects see a playable video preview inside the conversation.
Learning objective
By the end of this tutorial, you’ll know how to attach up to 6 videos to a LinkedIn Chat message step, preview how it will appear to leads, and apply best practices to keep your outreach effective and compliant with file limits.
Why this matters
Video can help your message stand out in crowded inboxes by delivering context quickly (product teaser, quick intro, customer proof). Used strategically, it can increase engagement without adding extra text length or complexity.
Prerequisites
You have an existing campaign (or permissions to create/edit one).
You’re using a sequence with a LinkedIn Chat message step.
You have videos ready in MP4 or MOV format.
Core lesson — Step-by-step workflow
Phase 1: Open your campaign and add a LinkedIn message step
Go to Campaigns and open the campaign you want to edit.
In the sequence builder, choose Chat message (Send on LinkedIn) as a step.
Why: Video attachments are added from inside the message editor for this LinkedIn step.
Phase 2: Attach videos to your LinkedIn message
In the message editor, click the video icon to attach a video file.
Upload your video(s), then continue writing your message text as usual.
Video limits
Up to 6 videos per message
Accepted formats: MP4 or MOV
Max size: 20MB per video
Important note about personalization
This is not 1:1 personalized video. The attached video is the same for all leads who reach this step.
Phase 3: Review, remove, and preview before launch
After upload, you’ll see a video thumbnail in the message area.
To remove a video, click the X on the thumbnail.
Click Preview to see how your message (including the video) will render in LinkedIn.
Why: Preview helps you confirm the final appearance before you send at scale.
In the preview, you can confirm that the video appears inside the LinkedIn conversation exactly as expected.
Practical application: 3 video ideas that work well
10–20s personal intro: who you are + why you’re reaching out (keep it tight).
30–45s value demo: one problem, one outcome, one CTA (e.g., “Worth a quick chat?”).
Customer proof clip: short testimonial excerpt or results summary.
Best practices
Keep it short: aim for 8–45 seconds for cold outreach.
Match the message text to the video: explain what’s in the video and why it matters to the lead.
Test first: preview and (if possible) run a small batch before launching to your full lead list.
Stay within limits: compress large files to stay under 20MB per video.
Don’t over-attach: 1 video is usually enough; add more only if it truly improves the experience.
Troubleshooting & common pitfalls
Issue: My video won’t upload
Likely cause: File is larger than 20MB or not MP4/MOV.
Fix: Export as MP4/MOV and compress the file below 20MB, then try again.
Issue: I can’t add more videos
Likely cause: You reached the limit of 6 attachments.
Fix: Remove one (click X on a thumbnail) and upload another.
Issue: I expected each lead to get a personalized video
Root cause: This release supports attachments, not 1:1 personalized video generation.
Fix: Use one universal video per step (segment campaigns if you need different videos for different audiences).