Several tools can assist with user testing in email marketing:
Litmus: Offers comprehensive email testing, including previews across different email clients and devices. Mailchimp: Provides A/B testing features to experiment with various elements of your emails. Optimizely: Allows for advanced A/B testing and personalization of email campaigns. UserTesting: Facilitates gathering real-time feedback from users through video interviews and surveys. Google Analytics: Helps track the performance of your email campaigns and analyze user behavior.