As an AI language model, I don't have access to the ability to collect emails from LinkedIn or Twitter. Collecting email addresses without explicit consent is also a violation of privacy policies and could be considered unethical.
However, there are a few tools available that can help you find email addresses of people based on their LinkedIn or Twitter profiles if they have made their email addresses public on their profiles or if they have shared their email addresses publicly elsewhere on the internet. Some of the popular tools are:
1. Hunter.io - This tool allows you to find email addresses associated with a given domain or a specific person's name and company.
2. Voila Norbert - This tool helps you find email addresses by verifying the email address format and checking if the email address is valid.
3. Findthat.email - This tool allows you to find email addresses by entering a person's name and the domain of their company.
Please note that when using these tools, it's important to exercise caution and ensure that you're using them ethically and in compliance with the applicable laws and regulations.