Yespo
From Planfix
To enable integration with the mailing list service Yespo, go to Account Management - Integrations - Email marketing services:
In the list that appears, activate Yespo:
Open Yespo in the next tab and log in with your account. Then go to settings:
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Find the API section, add the key, and copy it:
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Go back to the Yespo integration page in Planfix and paste it into the appropriate field:
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Save changes. After that, it will be possible to enable the automatic export of selected contacts to Yespo in each contact filter.
Important
In Yespo, deleting contact groups via API is impossible. So when you delete contacts, they remain empty. They can only be removed manually.