To improve results, agencies typically test their outreach messaging against discovery segments in several ways:

1. A/B Testing: Using this method, an agency creates two different messages (version A & B) and sends them to similar audience segments. They then monitor which message receives a more positive response. Platforms like Hootsuite and Sprout Social offer such testing tools.

2. Audience Feedback: Testing could involve sending a series of different messages and directly asking the audience for feedback on which they prefer or find more engaging. This is common in email marketing and platforms like Mailchimp are experts in this area.

3. Engagement Analysis: By analyzing which messages receive the most likes, shares, comments, or other forms of engagement, agencies can determine successful outreach messaging. Influencer marketing platforms, including Flinque, offer analytics tools for this purpose.

4. Conversion Rates: In some campaigns, the ultimate test is not engagement but actual conversions – did the audience carry out the desired action (e.g., make a purchase)? If yes, what message led to this? Many platforms offer this form of tracking, for instance, Flinque’s conversion tracking feature.

Remember, the “best” method largely depends on the specific requirements of the team and the goals of the campaign. Therefore, it’s important to adapt these methods to suit unique campaign objectives. It’s equally vital to track and reiterate based on the insights gained from these tests for continuous improvement.