Lead Handoff from Marketing to Sales: MQL, SQL, Rules and Deadlines

Why do inquiries disappear between marketing and sales?

Marketing reports 80 new leads a month. Sales says it saw 20 of them and five were usable. Both numbers can be true. In between lies a step that nobody has written down in many companies: the handoff.

Research has a name for this phenomenon. Sabnis, Chatterjee, Grewal and Lilien (2013) speak of the sales lead “black hole.” They start from a figure taken from earlier surveys, according to which sales reps never contact around 70 percent of the leads generated by marketing. The authors point out themselves that both sides share in this: often more leads arrive than sales could possibly work. In their analysis of 461 sales reps at four firms, the share of time for marketing leads depended on prequalification, on managers tracking the follow-up and on lead volume.

Then there is time. Oldroyd, McElheran and Elkington (2011) report in Harvard Business Review on research into how U.S. companies handle online inquiries. Many were slow to respond.

The research is older and comes from the United States. The numbers cannot simply be transferred to your business. But they show how wide the gap between ambition and everyday practice can be. A handoff without a rule becomes a matter of luck. The basics are covered in the article on aligning marketing and sales. This one is about the rules in detail, and the guiding question is: how does forwarding an inquiry become a handoff in which nothing gets lost? To answer it, we first clarify the stages of lead, MQL, and SQL, then introduce the baton rule, and go through response times, returns and nurturing, responsibility, and metrics.

An inquiry is only handed over once someone has accepted it. Forwarding is not a handoff.

Lead, MQL, SQL: what do the stages mean?

The abbreviations come from the marketing departments of large companies and denote maturity levels of an inquiry. MQL stands for marketing qualified lead, SQL for sales qualified lead. Sudharsanam, Manivannan and Venkatachalam (2021) summarize the usual distinction like this: an MQL has shown interest and engaged with marketing content or initiatives but is not yet ready for a direct sales approach. An SQL meets specific criteria indicating that readiness. In their account, the transition depends mainly on lead scoring, on alignment between the two teams and on lead nurturing.

The handoff sits between MQL and SQL. Marketing proposes, sales accepts or returns. Which criteria are suitable for this is described in the article on lead qualification.

The baton rule: when does an inquiry count as handed over?

In a relay race, the exchange often decides. The fastest team loses if it drops the baton. The exchange is precisely regulated there: a fixed zone, a clear signal, and the runner only lets go once the next one has taken hold. I call the application of this to inquiries the baton rule.

1. Complete

   The inquiry contains the minimum data set. If something is missing, it stays with marketing until it has been added.

2. Addressed

   It goes to a named person with a named deputy. A shared inbox is not a recipient.

3. Timed

   A deadline for the first response starts with the handoff. The deadline depends on the rating.

4. Accepted

   The recipient confirms acceptance or returns the inquiry with a reason. Until then, marketing remains responsible.

The fourth point makes the difference. In most companies, marketing’s responsibility ends when an email is sent. Under the baton rule it only ends once sales has taken hold.

Which response times are realistic?

Someone who sends an inquiry has time and the problem on their mind at that moment. Later they are in the next meeting or have already spoken to another provider. This does not create a duty to respond instantly. It creates a duty to set a deadline your team keeps on every normal working day.

Staggering by rating makes sense. A inquiries meet all criteria and get the shortest deadline. The following example is intended for a small team that also has customer appointments.

Technology takes away part of the pressure. Appointment booking right after the form or an automatic reminder before the deadline expires cost little. Which routine tasks lend themselves to this is shown in the article on how to automate sales.

Return and nurturing: what happens to inquiries that are not ripe yet?

Sales may return an inquiry that was handed over. This right is important; otherwise unsuitable inquiries pile up in sales and are quietly ignored. The return has one condition: it names a reason from a fixed list.

Nurturing means staying in touch with prospects until an occasion arises. Many vendors promise that automated lead nurturing reliably raises the close rate. Habel, Hartmann, Wiseman, Ahearne and Vaid (2025) tested this in the Journal of Marketing, with expert interviews and three data sets: 748 leads of a software provider, 13,525 leads of a protective wear supplier and 5,040 invitations to an industry conference, which in a randomized trial were either nurtured automatically or contacted by traditional email. The result is mixed. Only at the protective wear supplier did the probability of conversion rise on average, by 23 percentage points. In the other two studies there was no average effect on conversion.

What automated nurturing changed in the two company data sets was above all the kind of conversation. There were more meetings between salesperson and prospect, not more phone calls, and meetings were related to conversions. The authors explain this with information: both sides know more about each other before the conversation. Accordingly, the automation worked less well with long sales cycles, large order volumes and existing customers, where that information flows anyway, and better with new prospects. The authors advise against taking vendor promises at face value and recommend verifying in your own context whether automated nurturing works. For a small business this means: start with a reminder and a personal call after three months. You can automate later, once you know what you are automating.

Who makes sure the rules apply?

Rules on paper change nothing as long as nobody looks. The question is how you look. Altenscheidt, Ernst and Schmitz (2024) interviewed eleven sales managers and ten sales reps on this and then surveyed 410 sales reps. They distinguish two kinds of leadership: goal control, where results are measured against targets, and process control, where the manager influences how the work is done and gives feedback. Taken on its own, neither kind showed a direct effect on the effort put into handling leads. It came down to the reps’ attitude: among those who feel personally responsible for handling leads, process control had a stronger effect and goal control a weaker one. Under certain circumstances the two had a positive effect in combination. The survey is a snapshot and relies on the reps’ self-reports.

This fits the finding by Sabnis and colleagues that experienced reps respond less to tracking and more to the quality of prequalification. Together they yield practical advice: prescribe clear procedures and make sure the inquiries are good. Pressure through numbers alone achieves little with experienced people.

That tool and collaboration belong together is shown by a survey of 649 business-to-business companies in nine Latin American countries (Bustamante and colleagues, 2026). Only the interplay of customer relationship management capabilities and marketing and sales collaboration went along with better relationship maintenance and better results there. So a CRM alone does not solve the handoff. How to introduce such a system so that the team uses it is covered in the article on introducing a CRM.

Technically, the handoff can be mapped as a task with a recipient, a deadline and a status. That works in any CRM and in any task tool. One example of such a tool is quik OS, a work platform for tasks, knowledge and strategy from a business partner of Owners Council. What matters is the rule and not the tool.

How do you know whether the handoff works?

Four numbers are enough. They can be read from the same list that holds the inquiries.

In the example, 15 of 60 handed-over inquiries go back. That is not a failure. It is the information that lets marketing deliver better next month. Carry the source through to the order and you will also see which channel brings the accepted inquiries. The analysis is described in the article on how to measure marketing success.

How to get started

The rules fit on one page. Sit down with the people involved for an hour and fill it in. If you handle marketing and sales alone, the page still applies: it forces you to set the deadline for yourself as well.

• Define the minimum data set and adapt the inquiry form to it.
• Name one recipient and one deputy for handed-over inquiries.
• Write down deadlines for A, B and C and set the number of contact attempts.
• Create the four return reasons as a fixed selection in the list or CRM.
• Add a field “accepted on” so that acceptance becomes visible.
• Include the four metrics in the fixed weekly or monthly meeting.

You do not need a separate format for the fixed meeting. Five minutes in the existing round are enough if the numbers are prepared. An agenda for it can be found in the article on weekly planning in the team. What happens after acceptance, from the first conversation to the close, is covered in the article on how to optimize your sales process.

The answer to the opening question is a simple but binding rule: an inquiry only counts as handed over once it is complete, addressed to one person, and accepted by that person. Response times depend on the rating and must be sustainable in everyday work. If sales returns an inquiry, it gives a reason, and these reasons are the most valuable feedback for marketing.