Before we get started, consider brushing up on these subjects:
Import tools and methods for adding contacts to an account
Create a pop-up contact sign-up form for your website
The user (i.e., a hypothetical Constant Contact user) wants to send emails to their audience where no two recipients receive the same exact email. It is easier said than done, but let’s see how we can make it easier.
There are a few different ways we might accomplish this, so let’s consider a few different scenarios.
Scenario 1: Special promotions, A/B testing promo pricing, or location-based content
Solution: Dynamic Content Blocks
Customize what each contact sees in your email with dynamic content
Dynamic Content blocks allow the user to create one email that serves multiple audiences. The blocks can be anything you want: A promotion for a product or service, an announcement of an event in a specific city, etc. Depending on what you set the criteria for the block, only select contacts will be able to view it based on how their contact profile is set up.Â
It can also serve as an A/B testing tool where you can compare the engagement of different blocks. For example, you’re selling two dresses and trying to see which one captures attention better. The dress promotions connect back to your store with two distinct links in their own dynamic blocks, and you can then compare the click activity between the two links.
Of course, if we’re trying to accomplish the goal of no two recipients receiving the same email, it would require either A) a small number of contacts to reduce workload, or B) a lot of dynamic content blocks. That is probably not feasible for most, but we still recommend using dynamic content blocks when you want to cater to specific audiences in one email.
Bonus: We also offer an A/B Test subject line feature. More info here!
Scenario 2: Each contact could have their own unique email, special coupon code, or many possible combinations
Solution: Inserting custom contact fields
Create and manage custom contact fields
Custom contact fields are a great way to cater to many different people through relatively automated means. The first and easiest way to collect the appropriate information is by including it in a sign-up form. What kind of custom fields you include depends on the needs of your organization. For example, you’re a landscaping business that needs to know the square footage of a contact’s yard, or you're an ice cream shop that records a patron’s favorite flavor.
If your business is running a promotion and wants to give every contact a unique code, this can be generated in a few different ways. Programs such as Microsoft Excel offer processes that will generate random codes. If you search on the Internet for “random code generators,” you’ll find third-party sites that offer this service as well. We haven’t tested them personally, so we cannot vouch for them. After the codes are generated, you would just need to copy and paste the codes into a new column in a spreadsheet of your contacts. When you re-upload the spreadsheet into Constant Contact, you will assign the coupon codes to a custom field, and every contact will be updated with their unique code. When creating an email, select the insert custom field option and choose the field related to your promotion. There are a lot of different combinations that could be used with this feature.
Scenario 3: Need to separate out entire newsletters to several sub-groups.
Solution: Segments
Create a segment of contacts by choosing specific criteria
Segments are great for automating how you organize your audience. For example, maybe after sending a newsletter for a while, you see that some contacts engage with it more regularly than others. It’s possible that the least engaged contacts are still interested, but are receiving it too frequently. You can use Segments to identify which contacts are engaging less frequently and sort them into a new list; for example, once a month versus weekly. Then, you could track their engagement and see if the least engaged contacts are opening the once-a-month newsletter more regularly.
You can also use tags and contact details to sort your contacts. Like above, the easiest way to get this information is through a sign-up form on your site, a sign-up list in your store, or with an integration between Constant Contact and your e-commerce platform. What special interests do your contacts have? Do you cater to contacts in many different regions? If this is reflected in their tags or contact details, you can select it while generating a new list from segments.
We hope this exploration of how to utilize different tools in Constant Contact will help with your online marketing efforts!
Revised April 7, 2026
