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The Problem

Generic sales emails have notoriously low response rates. Personalized video consistently outperforms text — but recording a custom video for each prospect doesn’t scale past a handful per day.

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How It Works

CRM/prospect data → Personalized prompt per contact → Batch generate → Deliver via email/LinkedIn
You define a prompt template with variables (name, company, pain point). For each prospect, the template fills in their details and Video Agent generates a personalized video.

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Build It

1

Prepare your prospect data

Export from your CRM or create a structured list. Each entry needs enough context to personalize the video.
prospects = [
    {
        "name": "Sarah Chen",
        "company": "Acme Corp",
        "role": "VP of Marketing",
        "pain_point": "spending 40+ hours/month on video content creation",
        "value_prop": "cut video production time by 90% with AI-generated content",
    },
    {
        "name": "Marcus Johnson",
        "company": "TechStart Inc",
        "role": "Head of Sales",
        "pain_point": "low response rates on cold outreach",
        "value_prop": "personalized video messages that get 10x more replies",
    },
    # ...
]
2

Build a prompt template

The template should produce a video that feels personally recorded — not like a mail merge.
def build_outreach_prompt(prospect):
    return f"""Create a 30-second personalized sales video.

The presenter should speak directly to the viewer as if recording
a quick personal message. Warm, genuine, not salesy.

Script direction:
- Open: "Hi {prospect['name']}, I was looking at what {prospect['company']}
  is doing and had a quick thought for you."
- Problem: Briefly mention that many {prospect['role']}s are
  {prospect['pain_point']}.
- Solution: Share that there's a way to {prospect['value_prop']}.
- CTA: "Would love to show you how this works — mind if I send
  over a 5-minute demo? Just reply to this email."

Tone: Conversational and genuine. This should feel like a real person
who took 30 seconds to record a message, not a polished ad.
Keep it under 35 seconds. Landscape orientation.
"""
The key to personalized video: The prompt should include specific details about the prospect (company name, role, pain point) but the delivery should feel natural and unrehearsed. Avoid making it sound like a template — that defeats the purpose.
3

Generate videos in batch

Submit all videos with rate limit spacing.
import requests
import time

HEYGEN_API_KEY = "your-api-key"
jobs = []

for prospect in prospects:
    prompt = build_outreach_prompt(prospect)
    resp = requests.post(
        "https://api.heygen.com/v3/video-agents",
        headers={
            "X-Api-Key": HEYGEN_API_KEY,
            "Content-Type": "application/json",
        },
        json={"prompt": prompt},
    )
    data = resp.json()["data"]
    jobs.append({
        "prospect": prospect,
        "video_id": data["video_id"],
    })
    print(f"Submitted for {prospect['name']}: {data['video_id']}")
    time.sleep(5)
4

Collect results and deliver

Once all videos are rendered, pair each video URL with the prospect for delivery.
import time

for job in jobs:
    while True:
        resp = requests.get(
            f"https://api.heygen.com/v3/videos/{job['video_id']}",
            headers={"X-Api-Key": HEYGEN_API_KEY},
        ).json()["data"]

        if resp["status"] == "completed":
            job["video_url"] = resp["video_url"]
            job["thumbnail_url"] = resp["thumbnail_url"]
            print(f"Ready for {job['prospect']['name']}: {resp['video_url']}")
            break
        elif resp["status"] == "failed":
            job["video_url"] = None
            print(f"Failed for {job['prospect']['name']}")
            break

        time.sleep(10)

# Now you have a list of prospects with their personalized video URLs
# Feed this into your email/LinkedIn outreach tool

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Delivery Strategies

ChannelHow to embedTips
EmailUse the thumbnail_url as a clickable image linking to video_urlGIF thumbnails get higher click rates than static images
LinkedInUpload the video directly or share the link in a messageVideo messages tend to get significantly higher response rates
Landing pageEmbed the video on a personalized page per prospectCombine with personalized page content for full experience
Sales platformMost platforms (Outreach, Salesloft, HubSpot) support video embedsCheck your platform’s video integration docs

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Brand Consistency

When generating videos for many prospects, you want every video to feel on-brand:
  • Same avatar: Pass a specific avatar_id to ensure the same “salesperson” appears in every video. See Avatars to browse options.
  • Same voice: Pass a specific voice_id for consistent voice. See Voices.
  • Same style instructions: Include brand colors, background, and tone in every prompt.
def build_outreach_prompt(prospect):
    return f"""Create a 30-second personalized sales video.

Avatar: Use avatar look_id "josh_lite3_20230714".
Background: Clean, modern office with warm lighting.
Brand: Professional but approachable. No flashy graphics.

...rest of the prompt...
"""

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Variations

  • Follow-up sequences: Generate a series of videos per prospect — intro, value prop, case study, final nudge
  • Event-triggered: Generate a welcome video when a prospect signs up for a trial or downloads a resource
  • Account-based marketing: Generate company-specific videos that reference the prospect’s recent news or achievements

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Next Steps

Social Media Pipeline

Use similar batch techniques for social content.

Prompt Engineering

Craft prompts that make each video feel genuinely personal.