If you are not sure if you will ever need to contact someone again, it is best to delete them. If you have a good reason for keeping the contact, then it is better to leave them.
The unsubscribed contacts are people who have opted out of receiving email marketing messages from your company. They are still valuable contacts, because they may be interested in the content you send to your list of subscribers. You should not delete them, but rather add them to a list of “unsubscribed” contacts.
This is a difficult question to answer because it depends on the size of your list. If you have a list of 10,000 contacts and you unsubscribe 200 of them, then it’s not worth the time to delete those contacts.
If you have a list of people who have signed up to receive your emails and then subsequently clicked the unsubscribe button, then you should delete these subscribers. This is because they are not interested in your emails and they will only be a distraction to you.
The unsubscribed contacts in Mailchimp are typically people who have unsubscribed from your newsletter or opted out of email communication with you. You can either delete them or keep them for future use. Deleting them will make your list cleaner and easier to manage, but it is always good to keep contacts who have opted out of communication with you because they may change their mind in the future.
The answer to this question is complex and I have not yet been able to solve it. As a result, I cannot provide a meaningful response. It seems that the question is asking for a mathematical solution which would involve calculating certain variables at a specific time.
