B2B Sales AI 'Nudge HQ' Developed by a 26-Year-Old, Officially Released Today. Open Rate in In-House Sales is 56.3%

Cynthia Corporation (Headquarters: Yokohama City, Kanagawa Prefecture, Representative Director: Kazuya Hara, 26 years old) officially released the B2B sales AI tool 'Nudge HQ' on June 15, 2026.

Nudge HQ is a cloud service that automates the entire process of lead collection, email creation, follow-up, and re-engagement for B2B sales using AI. Without an engineering team or funding, Representative Hara single-handedly conceived and developed the tool.

Prior to the release, the company used Nudge HQ in its own sales activities and achieved an open rate of 56.3% and a click-through rate of 14.1% (latest 192 emails) for new business emails (cold emails) to companies with no prior contact.

Generally, the open rate for B2B emails is around 20-25% (source: Shannon 'What is the average open rate for newsletters?' 2026), which is the average for newsletters that readers have subscribed to themselves. Initial business emails have surpassed this level by more than twice.

A 14-day free trial is currently available on the official website (https://nudge-hq.co.jp/?utm_source=prtimes&utm_medium=referral&utm_campaign=launch_release).

■ We Publish Real Data from Our Own Sales

'If you call yourself a sales AI, you should first show results in your own sales'—with this idea in mind, our company conducted all pre-release sales activities using Nudge HQ.

The daily performance after introducing open tracking is as follows.

Date/Sent/Opened/Open Rate/Click Rate

June 9th/4/4/100.0%/50.0%
June 10th/40/18/45.0%/10.0%
June 11th/50/33/66.0%/20.0%
June 12th/34/16/47.1%/11.8%
June 15th/64/37/57.8%/10.9%
Total/192/108/56.3%/14.1%

*New business emails to companies with no prior contact/Company's own research

Daily performance of the latest 192 emails — Average open rate 56.3%

Even with daily fluctuations, the lowest day was 45.0%.

It surpasses the average open rate of 20-25% for typical B2B emails (opt-in distribution) on all days.

■ Why Do Emails from Unknown Companies Get Opened?

Nudge HQ has AI that thinks about 'who to send to and what to send' for each company.

① AI-powered list collection

Just specify the industry and area, and the target company list is automatically generated.

Email addresses and representative names are also automatically obtained.

② Budget assessment

AI analyzes each company's news and hiring trends to identify companies that seem to have investment capacity at this time.

Reduces wasteful efforts to companies that 'receive but cannot buy'.

③ Fully personalized for each company

AI analyzes each company's website and generates an email tailored to the company's unique challenges for each company.

Eliminates the template feel that applies to any company.

Personalized memo

④ Subject lines are a collaboration between AI and humans

Whether an email is opened or not is almost decided by the subject line. Nudge HQ generates multiple subject line options for each company using AI, and the sender can select and edit them according to the recipient company.

Furthermore, the patterns of subject lines with high open rates are learned by AI and reflected in the next subject line generation. It is possible to adjust according to the recipient company because humans ultimately confirm even one subject line.

⑤ Industry-specific AI that becomes smarter with use

The patterns of emails that received replies are learned by industry, and successful approaches are accumulated. The more you use it, the higher the accuracy becomes.

⑥ Automation of follow-up and re-engagement

Automatically distribute follow-up emails, and automatically re-approach based on the latest website information three months after follow-up is completed. You won't miss potential customers.

■ What Nudge HQ really solves is 'man-hours'

The high open rate is a result, not a goal.

The real challenge that Nudge HQ wants to solve is the 'time' in the sales field.

Sales representatives can manually send personalized emails, changing the content for each company, but only 50-100 emails per day is the limit. Moreover, sales work is not just about sending emails. There are many other things to do, such as following up with existing customers, negotiations, and creating materials.

Furthermore, in manual sales, there is always a loss of opportunities due to missed follow-ups or missed timing for re-approach. 'That company, I remember I couldn't follow up with them' piles up.

Nudge HQ automates the man-hours 'before and after sending emails'—list creation, personalization, follow-up, and re-engagement. It concentrates human time on tasks that only humans can do (negotiations and closing). This is the design philosophy of Nudge HQ.

■ The 'send button' is always pressed by a human

Nudge HQ does not perform full automation.

The final confirmation and sending of emails for each company are always designed to be done by humans.

Also, when a refusal reply is received, follow-up is automatically stopped,

Humans read the content and add it to the sales NG list, preventing it from resurfacing in the re-engagement list.

Companies that detect the intention to stop delivery with one click are automatically added to the sales NG list,

Excluded from follow-up and re-engagement targets. Delivery stop can be done with one click.

'Only let AI handle the wasteful man-hours, and let humans make judgments related to customer trust'—this is the consistent philosophy of Nudge HQ.

■ Background: Structural challenges in the sales field

Japanese salespeople spend approximately 25.5% of their working hours on inefficient tasks such as travel and clerical work, which amounts to an economic loss of approximately 8,300 billion yen annually (HubSpot Japan 'Survey on Awareness and Reality of Sales in Japan' 2019).

The number of mental disorder certifications for industrial accidents reached a record high of 1,055 in fiscal year 2024 (Ministry of Health, Labour and Welfare), and the number of bankruptcies due to labor shortages also reached a record high of 427 annually (Tokyo Shoko Research).

The labor shortage is severe, but it is not easy to increase the number of people. Therefore, the question is how to use the time of the people who are already there. Nudge HQ challenges this one point: to eliminate 'work' from the sales field that does not lead to sales, and to reclaim human time for 'negotiations' that only humans can do.

■ Pricing Plans

Light/Monthly ¥98,000 (excluding tax)/2,000 units~

Higher-tier plans (Standard, Pro, Enterprise) for larger-scale operations are also available.

Please contact us for details.

*No initial cost

*1 unit = 1 approach right to a company

A 14-day free trial (with 100 units) is currently available.

■ Representative Comment

'I have experienced telemarketing to individual homes at a sales company and have interviewed more than 5,000 people in the human resources industry.

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