1. Experience:

When searching for a digital marketing agency, it's important to look for one that has extensive experience in the particular industry in which you're looking to have work done. Experienced digital marketing agencies are well-versed in the most effective marketing techniques to use in order to achieve the desired results in a particular industry.

2. Reputation:

It's important to look for an established digital marketing agency with a positive reputation in the industry. You can find this out by asking around for references from other businesses or checking online reviews and ratings. A good reputation is an indication that the agency is highly reputable and most likely successful in its marketing strategies and tactics. 

3. References:

Contacting references from past and previous clients is a great way to get a better understanding of the quality of services provided by the digital marketing agency. It is also a good way to determine the level of customer service provided and the agency's ability to work as part of a team. 

4. Services Offered:

Make sure to research and identify the services offered by the digital marketing agency in order to determine which services are the most suitable for your particular goals. A good agency should provide a comprehensive list of services, including strategy development and implementation, content creation, social media management, SEO, web and mobile optimization, email marketing, and more. 

5. Cost:

Finding a digital marketing agency that is within your budget is essential. Make sure to do your research and get quotes from different agencies to find one that offers a good price point for the services you need. 

6. Communication:

Communication is essential when working with a digital marketing agency. Make sure to ask about what types of communication channels are available for communication, such as email, telephone, or video conferencing. These channels should be established before the project starts to ensure a smooth workflow throughout the process.

7. Creative Approach:

A good digital marketing agency should have a creative approach when it comes to problem solving. They should be able to come up with innovative methods and strategies that lead to successful outcomes based on the various goals of the project.

8. Results:

Results are what really matter when working with a digital marketing agency. It's important to check the agency's track record and look at their past successes in order to get a better understanding of their performance.