How fast you can start depends on your setup option. Pre-warmed inboxes can send within minutes. New branded domains need 14 days of warmup, plus up to 72 hours to register domains and start warmup (about 2 to 3 weeks from signup). Either way, sending ramps up over 7 days to protect your sender reputation. These steps make sure your campaigns land in inboxes, not spam folders. Understanding what happens and when will save you frustration and help you hit the ground running.
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Timeline: Day 1

Right after purchase, your first task is setting up your sending domains and email inboxes. You'll do this directly inside the ListKit app by following the step-by-step setup guide available in-app.

This step is critical, your domains and inboxes need to be properly configured before anything else can happen. Take your time here and follow the guide carefully.
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Choose Use pre-warmed domains and inboxes (recommended), let Auto-select pick your domains, add your website redirect URL, and set up two sender personas. Your inboxes appear in Inboxes within a few minutes. For the full walkthrough, see What are ListKit's pre-warmed inboxes and how do I set them up?
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What to do:

Timeline: Day 1 to 5

Book your onboarding call using the link sent to your email. On this call, the team will:

Book as soon as the email is received, the sooner you book the better.
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Timeline: 14 days of warmup (new branded domains only)

After your domains setup, your domains and inboxes enter a warmup period. For new branded domains, this is a required process where your sending infrastructure gradually builds its reputation with email providers.
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⚠️ Important: If you chose new branded domains, you cannot launch cold email campaigns until warmup is complete. Skipping or rushing this step will damage your deliverability. Pre-warmed inboxes skip this step.

Once your inboxes are ready, open Campaign in the left sidebar and click Create campaign. Sending starts low and ramps up to full volume over 7 days automatically.

Here is what launching looks like:

From here, monitor your replies in the Master Inbox and respond to anyone who expresses interest as quickly as possible. For the full walkthrough, see How do I create a campaign in Email Engine?
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Once your campaign is launched, ListKit is fully self-serve. You're in control of managing, adjusting, and scaling your campaigns inside the app.

Support options:

By the end of this process you'll have fully warmed domains and inboxes, a targeted leads list, and a live cold email campaign actively sending to your ICP.

While you get set up, you are not just waiting. ListKit includes the Dream 100 Launch Bonus, a training video and up to $100 in gift cards, specifically designed to help you start booking meetings before your first cold email ever goes out.
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The idea is simple: identify your most ideal prospects, reach out to them personally from your main inbox using a hyper-personalized message, and offer them a $25 gift card to take a call with you. ListKit covers up to $100 ($25 for each prospect who attends, max 4). See What is the Dream 100 bonus and how do I use it?

At every stage of this process, you have support available:
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Your onboarding call
A real expert checks your domains and inboxes and builds your first leads list with you.
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Cold Email Mastery Course
In-app, step-by-step education built for beginners, covering everything from what a cold email funnel looks like to how to handle positive replies. Access it from Education in the left sidebar.
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The Help Center
Articles covering how the platform works, what the metrics mean, and how to write better emails. You do not need to read everything. Browse the Cold Email Training section for strategy, and come back to specific articles whenever you have a question.
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VIP Slack community
A private community of ListKit customers with weekly office hours and live webinars. A great place to ask questions and learn from people doing exactly what you are doing.
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In-app chat
Send us a message in the app. Our support team replies Monday to Friday, 9am to 5pm ET, usually within 2 hours. Messages sent outside those hours are answered the next business day.

I haven't received the onboarding call booking email, what do I do?

Check your spam folder first. If it's not there, reach out via in-app live chat or email [email protected] and the team will resend it.
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Can I speed up the warmup period?
Yes: choose pre-warmed inboxes during setup and skip warmup entirely. If you chose new branded domains, warmup cannot be rushed. Sending campaigns before warmup is complete will hurt your deliverability and could get your domains flagged. Use this time to refine your leads list, and complete the Cold Email Mastery Course in Education (left sidebar).

What should I do while I wait to launch?
You are not just waiting, you have the Dream 100 Launch Bonus available from day one. It includes a training video and up to $100 in gift cards to help you run personalized outreach from your main inbox while your campaigns get going. Most customers use this time to book their first meetings before a single cold email goes out.
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What if I'm not ready to book my onboarding call right away?
That's fine, just book it as soon as you're ready. There's no hard deadline, but the sooner you book, the sooner your first leads list is built and the sooner you can launch.
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My onboarding call is done but my campaign hasn't launched yet. Is that normal?
Yes. If you chose new branded domains, your campaign can't go live until warmup is complete. The ListKit team will confirm the exact launch timing on the call.
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Where can I get help between calls?
You have access to in-app live chat, email support, the VIP Slack community, and weekly office hours. All support channels are available from Day 1. Join the Slack community yourself from Education (left sidebar) by clicking Join Slack channel.

How do I know if cold email will work for my business?
Use the ROI calculator at listkit.io. Plug in your average client value and your close rate from meetings and it will show you what different sending volumes could mean for your revenue in a month. See How do I use the ROI calculator to choose my sending volume?