using gmail’s SMTP server for free and for security reason

subtle note that if you are subject of interest by the authority: the emails you sent can be used against you, use google smtp server free! to send your emails, and remember to utilise 2 factor authentication(which is not present in most ISP provided or corporate emails), valid for your own domain and other emails using programs like outlook, thunderbird.

follow the link for detailed instructions:

https://kinsta.com/knowledgebase/free-smtp-server/

besides your sent emails are encrypted with TLS(sniffers may have a problem) and so to speak that only Google and the recipient can read, by right of course..lol

and then you may ask, recipient still can reply with your message enclosed but i do see some actually have the virtue of replying without your original message(deleted).