https://mailchimp.com/help/import-contacts-mailchimp/
Import Contacts to Mailchimp | Mailchimp
Learn how to use our import tool to add or update contacts in Mailchimp.
import contactsmailchimp
https://tilda.cc/en/answers/a/forms-sendpulse-en/
How can I import contacts from my SendPulse forms? - Frequently asked questions Tilda
To connect the list with SendPulse contacts, complete the following actions:Go to the Site Settings → Forms.Connect the SendPulse receiver.In the web page...
frequently asked questionsimport contactsformstilda
https://f-droid.org/en/packages/net.stargw.contactsimport/
Contacts Import | F-Droid - Free and Open Source Android App Repository
Import your CSV contacts from a desktop client without any cloud syncing.
free and openandroid appcontactsimportsource
https://mailchimp.com/help/import-sms-marketing-contacts/
Import SMS Marketing Contacts to Mailchimp | Mailchimp
Learn how to import SMS marketing contacts to your Mailchimp audience.
sms marketingimportcontactsmailchimp