If you have not yet set up your integration with Mailchimp you can view the following guide to do so:
Creating a Newsletter Segment
Within Mailchimp, you will want to create a new segment. This will allow you to select a group of subscribers within your Mailchimp account that have the Newsletter subscription that you are looking to mail out.
In Mailchimp, go to "Audience", then "Segments".
You will then be taken to the Segments page. On here you will need to select "Create Segment".
Within the new Segment options, you will then need to set the segment conditions to look at the "Newsletters" field and have it match on the "contains" operator. You will then put in the exact name of the Newsletter that this segment is for.
You can review your newsletter names that are in Pico at https://publisher.pico.tools/settings/newsletters
Once you have your segment condition set up, select "Preview Segment" and review the data to make sure that the information is pulling the correct newsletter subscribers.
After confirming the information, select "Save Segment"
When you save the segment, make sure to give it a descriptive name so that you know who is on this list.
New subscribers will be added to this segment so you won't need to worry about updating this down the line.
Sending an Email to the Segment
Now, to send an email to the created newsletter segment, select "Create" then "Email" from the navigation bar in Mailchimp.
In the new email popup, give the email a descriptive name for your newsletter email. Then select "Begin"
In the new email page, you'll now want to modify who this email is sent to. Select "Edit Recipients"
Within the new menu, you can now select the segment that you would like to send to. In this case, select the segment that we just created.
Now that you have your segment selected, you can then continue on to build out the email for your specific newsletter recipients.
For more help with building out the Mailchimp email, we recommend reviewing Mailchimp's email guides: https://mailchimp.com/help/
For additional newsletters, build a second segment using the same steps but changing the "contains" value in the segment conditions.