to SEND email from gmail but through another server:
mail.privateemail.com
465 – SSL
—or—
587 – TLS
SMTP server: mail.privateemail.com (the same for all subscriptions) Username: full email address associated with your Private Email account Password: password for your Private Email account Port: 465 (with Secured connection using SSL option enabled) or 587 (with Secured connection using TLS option enabled)
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to READ email from another server with gmail (POP3)
https://www.namecheap.com/support/knowledgebase/article.aspx/9188/2175/google-mail-fetcher-setup-for-namecheap-private-email
mail.privateemail.com