Optimization Partners

Optimization Partners

At NextAfter, we have an ambitious vision to unleash the most generous generation in the history of the world. As a milestone, we’ve set our sights on running and documenting 25,000 online fundraising experiments by 2032.

Why set such a goal? Because every experiment represents a new learning about what works to grow giving and generosity.

But we’ll never achieve this goal alone—which is why we’re building a community of like-minded fundraisers and organizations who want to use testing and optimization to decode what works to grow generosity.

We call these like-minded organizations Optimization Partners.

A NextAfter Optimization Partner is:


Making an investment in testing & optimization for the nonprofits they serve.


Sharing their experiment learnings in WinstonKnows.


Empowering customers with tested & proven strategies to grow giving.

Premier Optimization Partners

Our Premier Optimization Partners are making an investment to bring testing & optimization strategies to their customers in a variety of forms including: first-party digital fundraising research, optimization services, a/b testing technology, and digital-first fundraising training.

Additionally, they’re sharing everything they learn from experimentation with NextAfter so we can equip more nonprofits with what works to grow giving and generosity.

Frontier is a results-oriented marketing team that partners with charities for efficient and effective fundraising growth. With their expertise in direct mail and digital fundraising, they can help you chart a path to new donors and sustainable, predictable growth.

Optimization Partner Since: 2022

An online giving platform with donation pages and optimization tools that can build higher-converting forms that drive impactful fundraising revenue.

Optimization Partner Since: 2022

Experimentation Partners

Experimentation Partners are actively testing to discover more of what works to grow giving and generosity, and sharing those learnings with NextAfter so we can equip nonprofits with the latest tested and proven strategies.

Marlin Communications is a full-service agency providing strategy, creative, and digital services dedicated to helping charities and social enterprises increase their impact.

Optimization Partner Since: 2022

Generosity X partners with charities to increase their annual giving revenue through optimization and innovation. They are laser-focused on Conversion Rate Optimization (CRO) and have a track record to prove it.

Optimization Partner Since: 2024

Become an Optimization Partner

Looking to join forces with NextAfter as we seek to unleash the most generous generation in the history of the world? We’d love for you to be part of the mission.

Fill out the form below and we’ll schedule some time to chat!

Haven't started testing yet? We'd love to help.

Even if you're just curious to learn about how testing & optimization can help you get better results for you clients & customers, we'd love to chat. We have a wide variety of training options to help you and your teams start optimizing.