LinkedIn automation helps save time on finding contacts, sending friend requests, and sending messages. I recommend looking at the top linkedin automation tool https://snov.io/blog/linkedin-automation-tools/ . It describes in detail the pros and cons of various services. For example, some tools offer built-in protection against blocking, which is especially important if you actively send out mailings. However, remember that LinkedIn is strict about such actions. To avoid problems, it is better not to exceed the daily limits on requests and messages. Ideally, if the tool you choose allows you to set up campaigns with a human rhythm of actions, so that your activity looks natural.