How to automate cold outreach with an AI SDR

By the end of this guide you will have a cold outreach process that an AI sales development rep (SDR) runs for you: it finds prospects who match your ideal customer, writes personalised messages, sends them on a schedule across email and other channels, handles replies and books meetings for your team. The job is done by an AI SDR platform or a prospecting tool, with a person approving the setup and the messages that matter.

To automate cold outreach with an AI SDR, you decide how much of the process to hand over: the whole job to an AI worker, the research and drafting to a tool you supervise, or just the writing quality of your emails. This guide covers the steps and compares seven tools from our Automation and agents category.

Key takeaways

• Define your ideal customer and offer, build a prospect list, set up sending domains and mailboxes, let the AI draft messages, review a sample, then send in small batches and watch replies and deliverability.
• The main decision is how autonomous the AI should be: a managed AI worker (11x, Narrow, AnyBiz), a platform your team runs (Topo, Overloop, Floworks), or an email coach that improves what you write (Lavender).
• Prices range from tens of dollars per month to thousands, and several plans are annual or quarterly. Check the contract terms.
• Cold outreach is regulated. Follow anti-spam and data protection rules where your prospects are, honour unsubscribe requests, and keep a person in charge of what is sent.

What you need before you start

• A clear offer and ideal customer. Industry, company size, job titles and the problem you solve.
• A sending setup. A domain and mailboxes you are willing to risk. Some tools set these up for you.
• A CRM or a sheet. Somewhere to see replies, meetings and outcomes.
• A reviewer. Someone to approve messages and watch replies, especially at the start.
• Time. A pilot campaign takes a day or two to set up, and mailbox warm-up takes longer.
• Difficulty. Moderate. Writing a good offer matters more than the tool settings.

Which kind of AI tool fits this job

Choose by how much you want the AI to run alone.

A managed AI sales worker. 11x has a worker called Alice that works through new prospects, runs personalised multi-channel outreach and books meetings, with managed mailboxes (domain setup, warmup, inbox rotation and monitoring) bundled in. Narrow is sold as a managed service: it runs outbound prospecting with personalised multi-touch email sequences, sets up custom domains and dedicated inboxes, and flags conversations that need human judgment. AnyBiz gives B2B companies an AI SDR that prospects and follows up by email, LinkedIn and phone, with a dedicated consultant for onboarding.

A platform with the AI working next to your reps. Topo watches buying signals, builds prospect lists, enriches contacts and runs email, LinkedIn and call sequences. Its agent can run in a mode where reps approve each lead and message. Overloop finds prospects from a built-in B2B database, drafts messages in your voice, and lets you review campaigns before launch. Floworks provides separate agents for research, cold email, LinkedIn outreach and reply handling.

An email coach for people who write their own. Lavender works inside Gmail, Outlook and sales engagement tools, scores an email against reply-rate best practice, suggests fixes, and can draft a first version. Its listing describes coaching and drafting rather than sending campaigns, so pair it with the tool you send from.

Step 1: Define your ideal customer and offer

The AI can only personalise around what you give it.

1. Write the buyer profile: industry, size, location and job title.
2. Write the offer in two sentences: the problem, the result and the proof.
3. List three or four reasons someone would reply, such as a trigger event or a pain point.
4. Decide the goal of the first message, such as a short reply or a booked call.

Check it worked by having a colleague read the offer and explain back who it is for.

Step 2: Choose the level of automation

Decide what the AI does alone and what a person approves.

1. For a hands-off route, look at managed workers such as 11x, Narrow or AnyBiz.
2. For a supervised route, look at Topo or Overloop, where you review leads and messages; Overloop also drafts replies for you to approve before sending. Floworks splits the work across separate agents for research, email, LinkedIn and replies.
3. If you only want better emails, look at Lavender.
4. Compare the contract. 11x defaults to annual billing, AnyBiz bills quarterly, and Narrow's Scale plan has a 3-month minimum.

Check it worked by writing down who approves messages and at what point.

Step 3: Build and clean the prospect list

A good list beats a clever message.

1. Use the tool's search or database to find prospects who match your profile. AnyBiz and Overloop each list a database of more than 450 million contacts, and Topo turns a plain-text prompt into a search.
2. Add buying signals if available, such as job changes or funding. Overloop and Topo both list signals.
3. Verify emails before sending. Overloop lists email verification, and Topo enriches contacts with verified emails and direct dials.
4. Remove people who should not be contacted, such as existing customers and competitors.

Check it worked by sampling ten prospects and confirming each really fits your profile.

Step 4: Set up domains, mailboxes and warm-up

Deliverability protects your reputation and your main domain.

1. Use separate sending domains, not your main company domain.
2. Let the tool configure the mailboxes if it offers it. 11x bundles managed mailboxes, AnyBiz sets up 6 domains and 12 mailboxes, and Narrow sets up custom domains and dedicated inboxes and warms them up.
3. Warm up new mailboxes before sending volume.
4. Monitor inbox placement and bounces, and pause a mailbox if replies turn into complaints.

Check it worked by sending a test message to several mailbox providers and seeing it reach the inbox.

Step 5: Draft and review the messages

Let the AI write, and then make it sound like you.

1. Give the tool your offer, your tone and examples of messages that worked.
2. Generate drafts for a sample of prospects and read each one.
3. Remove claims you cannot prove, flattery that feels fake and personalisation that is wrong or creepy.
4. Score the drafts if you use Lavender, which checks an email against reply-rate best practice.

Check it worked by sending five drafts to a colleague and asking which ones they would reply to.

Step 6: Launch a small batch

Start small to protect your reputation.

1. Send to a small group first, in a sequence of two to four messages.
2. Include a clear way to opt out and honour every request quickly.
3. Check each platform's limits. AnyBiz lists up to 5,000 emails a month on its email channel, and Narrow's email volume is capped by plan.
4. Keep a person in the loop for replies, at least until you trust the objection handling.

Check it worked by seeing replies, opt-outs and bounces appear in your dashboard or CRM.

Step 7: Handle replies and book meetings

The goal is a conversation, not a sent message.

1. Route positive replies to a person quickly, or let the AI propose times. Narrow books qualified meetings onto your calendar, and Floworks has an assistant that responds to objections using your own documentation.
2. Read the objections the AI handled and correct the answers that were wrong.
3. Sync outcomes to your CRM, so you can see which messages and lists led to meetings.
4. Adjust the list, offer or copy and send the next batch.

Check it worked by counting booked meetings and the quality of those conversations.

Tools for this job compared

Tool	Good fit for	Pricing	Stated limits
11x	A managed AI worker for outbound prospecting and meetings	Contact sales, from $2,417/mo (checked 24 Oct 2026)	Only Growth tier prices published; annual billing is the default; Alice API access needs Enterprise
AnyBiz	B2B outreach across email, LinkedIn and phone	Paid, from $497/mo (checked 24 Oct 2026)	Billed quarterly; built for B2B, not B2C; Scale plan price not published
Topo	Signals, lists and sequences with rep approval	Free trial, paid from $89/mo (checked 24 Oct 2026)	Solo allows up to 2 seats and 3 signals; data lookups use credits
Floworks	Separate agents for research, email, LinkedIn and calls	Freemium, paid from $20/mo (checked 24 Oct 2026)	Main plan prices need checking on the vendor's site; listed prices cover the James assistant
Overloop	Prospecting and email plus LinkedIn sequences you review	Free trial, paid from $69/mo (checked 24 Oct 2026)	Monthly credits per user; Starter allows 1 email account per user and 3 campaigns
Narrow	A managed AI sales agent for email outreach	Paid, from $1,500/mo (checked 24 Oct 2026)	Setup fee from $1,000; email volume capped by plan; no promised leads or meetings
Lavender	Scoring and improving emails you write	Freemium, paid from $29/mo (checked 24 Oct 2026)	Basic allows five email analyses a month; sales-engagement integrations need Pro

Prices and plan limits change, so confirm the current terms on each vendor's site before you subscribe.

Common mistakes to avoid

• Mass-sending from your main domain. One spam complaint wave can damage your company email. Fix it by using separate sending domains, warming them up and starting with small batches.
• Trusting AI personalisation blindly. Wrong names, outdated roles or invented details make you look careless. Fix it by reading a sample of every batch and removing weak personalisation.
• Ignoring the rules. Cold email and calling are regulated by anti-spam and data protection laws, which differ by country. Fix it by checking the rules for your prospects' location, offering opt-outs and getting legal advice for calling or messaging.
• Buying on features without reading the contract. Annual, quarterly and minimum terms can lock you in before you know if it works. Fix it by asking for a pilot, and check the notice period.
• Measuring sends, not meetings. High volume with low-quality replies wastes budget. Fix it by tracking replies, meetings and deals from each list.

How we put this together

This is an evidence-based guide built from each tool's listing in our directory, which is compiled from the vendor's own site and pricing page. It is not a review based on using the tools. We don't rank tools, and nobody paid to be included. Some outbound links may be affiliate links; see our disclosure.

Frequently asked questions

Can I automate cold outreach with AI for free?

Only partly. Lavender's Basic plan is free for five email analyses a month, Overloop has a 7-day free trial, and Topo's Solo plan includes a free trial. Floworks says its research agent can be started free without a credit card. Full AI SDR services are paid.

What does an AI SDR actually do?

It does the repetitive parts of outbound: finding prospects, writing personalised messages, sending sequences, following up and, in some tools, replying to objections and booking meetings. A person still sets the strategy and handles real conversations.

Is cold outreach with AI legal?

It depends on the country, the channel and who you contact. Business-to-business email, LinkedIn messaging and cold calling each have their own rules on consent, opt-out and data use. This guide is not legal advice, so check the rules for your market before you launch.

How long does it take to see results?

The listings do not state a timeline, and Narrow says it sells execution capacity rather than guaranteed leads or meetings. Plan for setup, mailbox warm-up and a few small batches before you judge the results.

Do I still need human salespeople?

Yes. The AI can start conversations and book meetings, but people close deals, handle complex objections and protect your brand. Narrow's agent flags conversations that need human judgment instead of guessing.

Compare more options in our Automation and agents category. For leads that come to you, see How to qualify inbound leads automatically with AI.