Yes, VPS can be used for e-mail newsletters, but it is important to keep a few things in mind:
Provider: Make sure your provider allows e-mail newsletters. Some ISPs restrict this due to concerns about spam.
Server Setup: Properly set up your server to send mail, including installing and configuring a mail server (e.g. Postfix, Exim).
List Management: Keep mailing lists up to date and clean to avoid spam lists.
Mail Authentication: Use SPF, DKIM and DMARC to authenticate mail and reduce the likelihood of spam.
Spam Checking: Regularly check your emails for compliance with anti-spam policies and regulations.
Proper configuration and adherence to best practices will help you effectively use VPS for email newsletters and avoid potential problems.