In MailPion you can send the particular campaign to a single subscriber, for sending the campaign to a single subscriber, no need to create the campaign for that particular subscriber. Just follow the below steps and send the campaign.
1. At the MailPion dashboard, Go to List >> Click on List.>> Click on Overview.
2. Click on Subscribers.
3. Click on the Subscriber configuration sign >>Create a campaign for these subscribers.
4. Once you click on Create a campaign for this subscriber, it will redirect to the campaign page and it will automatically create the campaign name and subscriber segment with the same subscriber list name. And then you need to follow the same process for sending the campaign for the particular subscriber.
5. Then click on Save and Processed for the next step and follow the normal process for sending the campaigns.