ImageSet prints and mails your donor acknowledgments – so you can focus on fundraising.
Is your staff overwhelmed with printing, stuffing, stamping, and mailing donor thank-you letters?
ThankYouFlow™ handles your donor follow-up quickly, affordably, and professionally, so your team can focus on fundraising instead of fulfillment.
It’s Friday afternoon. Your team is closing out reports, planning next week’s appeal—and 200 donor thank-you letters are still waiting to be printed, signed, and mailed.
ImageSet solves this. Our ThankYouFlow™ technology transforms your donor list into professionally printed, personalized mailings—without your team touching a single envelope.
If you can send an email, you can use our platform. It’s that easy!
Quality printing reinforces your organization's credibility and standards.
Thank you notes or letters can be printed and mailed as quickly as 48 hours of your upload.
Save up to 30% on postage and eliminate in-house printing expenses.
Include the donor’s name, amount, or memorial gift info directly in your message. Your data is secure and protected.
Tailor message, design, paper type, and more—seasonal messaging is a breeze.
ImageSet builds your secure, branded online portal with customized thank-you templates.
Log in, upload your donation list, review your proof, and hit send.
Your thank-you letters or cards go out fast – as quickly as 48 hours from your upload.

No more printing, stuffing envelopes, or post office runs

Save as much as 30% or more on postage and eliminate in-house printing expenses

Professional mailings that reflect your organization’s quality and standards

Timely, heartfelt thank-you letters that deepen donor trust and loyalty
For over 40 years, ImageSet has been the trusted print partner for Houston-area nonprofits. We understand your budget constraints, tight deadlines, and the importance of donor stewardship. That’s why we created ThankYouFlow—to help you thank every donor without the administrative burden.
I’ve used ImageSet for years. They always do great work. There have been times I’ve found myself in a bind and again their team was more than helpful and went up and beyond. Thank you again for your exceptional work.
Imageset is always quick, reliable, and easy to work with on various projects. When getting quotes, they regularly beat competitors in pricing. We’ve always been super happy with the final products we receive from them. Highly recommend for your printing needs!
I love working with ImageSet. They have always helped me so wonderfully, even when I come to them on such short notice. Not only do they provide great materials, but they also provide stellar customer service. I highly recommend them!