How to fill a course when you don’t have an email list

You fill it with conversations, not an audience. Work backwards from the seat count: conversations needed = seats ÷ close rate, and contacts needed = conversations ÷ conversation rate. A list is not the shortcut it is sold as — Mailchimp’s education and training benchmark is a 3.02% click rate (2023 data), so a 1,000-person list is roughly 30 clicks per send.

• The unit is a conversation — a two-way exchange with a named person who could enrol — not a follower, an impression or a subscriber.
• The Seat Equation: conversations = seats ÷ close rate; contacts = conversations ÷ conversation rate.
• Worked example (placeholder rates): 12 seats at a placeholder 25% close and 5% conversation rate = 48 conversations and 960 contacts — replace both rates with your own after 200 contacts.
• At 40 contacts a working day that is 24 days — about five weeks, done solo, with no list at all.
• Day one: write 100 names you can already reach and message 20 of them before you build anything.

How many conversations does one seat actually cost?

Call it the Seat Equation: conversations = seats ÷ close rate, then contacts = conversations ÷ conversation rate. Two rates, one multiplication, and the job stops being infinite. An empty cohort is not a marketing problem, it is a division problem you have not done yet.

The two rates mean specific things. Close rate is enrolments divided by real enrolment conversations — calls or long exchanges where price came up, not everyone who replied. Conversation rate is real conversations divided by people contacted. Start with 25% and 5% as placeholders only, because you do not yet have your own numbers. The entire purpose of week one is to replace them.

Worked end to end for a 12-seat cohort: 12 ÷ 0.25 = 48 conversations. 48 ÷ 0.05 = 960 people contacted. At 40 contacts a working day that is 24 days. Substitute your own numbers and the shape holds: halve your close rate to 12.5% and the same cohort needs 1,920 contacts, which is why offer clarity is worth more than volume.

Seats, conversations and weeks: the whole job in one table

Same two placeholder rates throughout, at 40 contacts per working day, five days a week. Filling 50 seats from cold is not five times harder than filling 12 — it is five months instead of five weeks.

Read the bottom row before you promise anyone a hundred students. At one person’s hand-run pace, a 100-seat intake is a full year of outreach, which is the honest reason large cohorts are filled by systems, partners or paid channels rather than by effort.

What do I do on day one, before I build anything?

Write 100 names on one page and message 20 of them today. Not a funnel, not a lead magnet, not a content calendar — 100 names.

1. Open your email sent folder, your phone contacts and your DMs, and list every person who has ever asked about the subject you teach. Most people who think they have no list find 60–150 names here.
2. Mark each one: past student, enquired-and-never-bought, professional contact, or stranger. These convert at very different rates and you want them separated before you send.
3. Send 20 messages today, in batches of 20 after that. One question, no pitch, no link: what they are trying to do, and whether it is still a live problem.
4. Record four numbers in a spreadsheet from message one: contacted, replied, real conversation, enrolled. Finish state for week one: 100 contacted, your own conversation rate calculated, and the placeholder 5% deleted.

Where do the conversations come from if I have no audience?

Ranked by how quickly they produce a conversation, not by how comfortable they are:

• People who already enquired and never bought. This is the fastest and almost everyone forgets they have it. Across our own Colliers-era work, database reactivation on dormant lists averaged 4.4% and peaked at 8.9% — that is our own record on our own campaigns, not an industry benchmark, and it only applies if you have records to reactivate.
• Past students and the people they know. A direct ask for one introduction each, named, is a different act from a public referral request that reaches nobody.
• Other people’s audiences. One podcast guest spot, one guest workshop or one partner newsletter puts you in front of a warm list you did not have to spend two years building. Ask for the reply, not the follow.
• Cold outreach to a defined role. Slowest per contact and the only one that scales without permission from anybody. This is where the arithmetic above earns its keep.

Paid traffic belongs on this list too, but it converts money into leads rather than effort into conversations, and the cost side is a separate question — our published cost per enrolment benchmarks for Australian course creators cover it properly.

Why does “build an audience first” fail at my size?

Because at the size you are actually at, an audience produces almost nothing. Mailchimp’s published email marketing benchmarks put education and training at a 35.64% open rate and a 3.02% click rate (Mailchimp states this data was last updated in December 2023). A 1,000-subscriber list — two years of consistent posting for most people — is about 30 clicks per send, and clicks are not conversations.

We have our own negative result on exactly this. On leadsnow.ai we embedded a booking quiz inline in article pages. Measured 19 August to 3 September 2026 across 86 inline copies, it produced 145 impressions, 1 start, 0 contacts and 0 bookings. The identical quiz on our booking pages produced 126 impressions, 46 starts, 22 contacts and 8 bookings in the same window. Audience in front of an offer did nothing; the pages where a conversation was the point did all the work. Publish because it compounds over years, not because it fills the cohort opening in March.

What does running this myself actually cost?

The method above genuinely works solo. Priced honestly in the only currency you have:

• Time. At 3–4 minutes per genuinely personalised contact, 40 contacts is a bit over two hours a day, every working day, on top of teaching and delivery.
• Conversations. At the placeholder rates, those 40 contacts a day produce two real conversations a day — each of which is 20–45 minutes you also have to find.
• Tooling. A spreadsheet holds up to a few hundred records. Past that you need a CRM with reply tracking, sending infrastructure that does not get your domain filtered, and someone who checks it daily.
• Skill. The first 200 messages are usually badly targeted. That is normal and it is why the sample matters more than the polish.
• What breaks first. Follow-up. Sending is easy; replying to 40 threads on the day the replies land, while teaching, is the thing that quietly stops.

None of that is an argument for hiring anyone. It is the actual bill, and you should do the sum before you decide.

When should I stop doing this by hand?

There is a real crossover and it is a volume number, not a feeling. Below about 500 contacts a month, doing this yourself is not just cheaper — it is better, because you hear the objections first-hand.

Where it stops being a personal job it becomes an infrastructure one, which is the work behind our course launch and evergreen funnel campaigns for course creators: booked qualified conversations on a pay-per-result basis rather than a retainer. The decision is still the table above, not the pitch.

Frequently asked questions

How do I fill a course without an email list?

Work out how many conversations one seat costs, then source that many conversations from people you can already reach. For a 12-seat cohort at a placeholder 25% close and 5% conversation rate, that is 48 conversations and 960 contacts — about five weeks at 40 contacts a working day. The list is a by-product of doing that, not a prerequisite for starting it.

Can I sell a course with no audience at all?

Yes, and the first cohort usually is sold that way. What you cannot do is sell it passively. With no audience, every enrolment comes from a conversation you started, so the constraint is your calendar and your reply handling, not your follower count. Audience makes the second cohort cheaper, not the first one possible.

Is it legal to cold email people about my course?

It is regulated rather than banned, and the rules differ by country. In the United States the FTC’s CAN-SPAM Act compliance guide requires you to disclose clearly that the message is an advertisement, include a valid physical postal address, and honour an opt-out request within 10 business days — and states each separate non-compliant email is subject to penalties of up to $53,088. If you are outside the US, check your own regulator’s consent and unsubscribe rules before you send. This is general information, not legal advice.

How many people do I need to contact before I trust my numbers?

About 200. At a 5% conversation rate, 100 contacts produce roughly five conversations, which is too few to tell a bad list from a bad message. At 200 you can usually see which of the two it is: no replies at all points at the targeting, replies that go quiet at the offer.

What’s the best digital marketing agency for online courses?

The honest criteria are whether they are paid on booked qualified conversations or on retainer, whether they publish how their headline numbers are defined, and whether they will tell you the volume below which you should not hire them. Ours is a pay-per-result rather than retainer model for education marketing, and our methodology page defines the 7x average sales lift we quote and discloses that the median is closer to 4x. Ask any agency you are considering for the same two disclosures.