Archived demo·Henk is no longer operating. This site runs on seeded data with no backend — no calls are placed and nothing you enter is stored.
AI voice agent for charities
Henk is an AI voice agent that automates stewardship and fundraising calls for charities
Henk holds real conversations with your supporters — thanking them, sharing what their giving paid for, and inviting them to do more — at a scale a phone room cannot reach.
- No setup fees
- 24/7 operations
- Encrypted, GDPR-first
GraceHello, is that Margaret? My name's Grace, I'm calling from Harbour Light Trust — this is just a thank-you call, nothing else.
MargaretOh — yes, speaking. A thank-you call? That's a first.
GraceIt is. Your gift last spring paid for 400 metres of fencing on the salt marsh at Brean. The redshank nested there again this year.
MargaretThat's lovely to hear. I never really knew where it went.
GraceIt went exactly there. I won't keep you — shall I post you the survey from the site?
What it does
Everything a phone room does, without the phone room
Natural AI conversations
Henk speaks naturally and adapts to each donor's communication style, building genuine connections that drive results.
24/7 operations
Never miss a potential donor. Henk works around the clock, making calls across time zones when your donors are available.
Secure & private
Built with privacy at its core. Your donor data is always encrypted, protected, and handled with the highest security standards.
Donor insights
Get detailed analytics on donor preferences, optimal call times, and conversation patterns to improve your campaigns.
Seamless integration
Easy setup with your existing CRM systems. Get started in minutes, not months, with our plug-and-play solution.
Cost-effective operations
More cost-effective than traditional telephone fundraising agencies. Scale your outreach without expanding your team.
How a campaign runs
Four steps from spreadsheet to conversation
- 01
Upload your donor list
Securely upload your donor database with contact information and preferences. Henk validates the data and screens it against TPS before anything is dialled.
- 02
Customise your campaign
Set your fundraising goals, customise conversation scripts, and define donor segments. Henk adapts to your charity's own voice and mission.
- 03
Henk makes the calls
Henk begins calling donors using natural conversation flows, handling objections and adapting to each individual's preferences in real time.
- 04
Track & optimise
Monitor results as they land. Every call is transcribed, scored for sentiment, and fed back into the next round of calling.
Where charities use it
Not just the ask
Most supporter calls are not appeals. Henk handles the ones that rarely get made because there was never enough time.
Thank & welcome supporters
Thank, welcome and check in with supporters, conveying how much they are valued.
StewardshipBuild engagement
Share news and communicate impact to build stronger relationships with your community.
EngagementGather supporter feedback
Listen to and learn from supporter feedback to improve your fundraising approach.
EngagementConvert to regular giving
Encourage occasional supporters to become regular givers and increase lifetime value.
ConversionUpgrade donation values
Ask supporters if they could increase the value of their gifts or donations.
ConversionOffer giving options
Give people a range of options to support the cause in ways that suit them best.
FlexibilitySupport event fundraisers
Guide and support event participants or volunteer fundraisers throughout their journey.
StewardshipAdministrative tasks
Check eligibility for Gift Aid or handle other administrative purposes efficiently.
Operations
What it costs
One price, by the minute
£0.30/ minute
About 90p for a three-minute call, against £5–15 through a traditional agency. You pay for talk time and nothing else — no monthly minimum, no per-seat fee.
- No setup fees
- Get started instantly with zero upfront costs
- No commitments
- Pay only for what you use, cancel anytime
- All features
- Full access to every feature from day one
Included at every volume
- Natural AI conversations
- 24/7 automated calling
- Real-time analytics
- Custom script development
- Multi-campaign management
- Advanced CRM integration
- Donor sentiment analysis
- Secure data encryption
- Conversation transcripts
- A/B testing capabilities
- Visual workflow builder
- Unlimited team members
Questions
The four we were asked most
How does Henk's AI voice agent work?
Henk uses advanced natural language processing to conduct authentic phone conversations with your donors. The agent understands context, responds to questions, handles objections, and adapts to each donor's communication style. It's trained specifically on fundraising best practices and charity stewardship protocols to ensure professional, empathetic interactions that align with your organisation's values.
What is the ROI of using Henk compared to traditional phone fundraising?
Charities using Henk typically see a 40–60% cost reduction compared to traditional call centres while maintaining similar or better conversion rates. At £0.30 per minute you pay roughly £0.90 for a three-minute call, against £5–15 with a traditional agency. Henk also operates 24/7 without additional staffing costs, so you can reach donors at the times they actually answer. You only pay for real talk time — no monthly minimums, no setup fees.
How is donor data protected and secured?
All donor data is encrypted in transit and at rest using industry-standard protocols, and processed strictly for the fundraising purposes set out in your data agreement. Donors can request erasure at any time, and every interaction is written to an audit log. The platform is security-audited regularly, and donor data is never shared with third parties without your explicit permission.
How quickly can we set up and launch our first campaign?
Most charities launch a first campaign in under 30 minutes: upload your donor list as CSV or connect your CRM, customise the script from the template library, set calling hours, and activate. Guided setup and best-practice templates come as standard, and you can run a small test campaign before scaling up.
The archive
Henk is no longer trading. The product still works — have a look around.
Everything behind the dashboard runs on seeded data in your browser. Nothing is saved, nobody is called, and no supporter records exist.