> Given 1000+ subscribers, how much will the newsletter cost (sent daily, provider agnostic)? You can check MailChimp or Amazon SES pricing for instance: http

> Given 1000+ subscribers, how much will the newsletter cost (sent daily, provider agnostic)? You can check MailChimp or Amazon SES pricing for instance: https://mailchimp.com/ https://mailchimp.com/ https://aws.amazon.com/ses/ https://aws.amazon.com/ses/ > As subscriber base grows, can I take advantage of economies of scale? 30,000 / month is not enough to get any real advantage, but if you grow large and going to have reputation of your domain then you can certainly start saving. When you already have working solution and send million of emails each month it's easier to setup your own infrastructure that going to be cheaper. > Can I do it for free, using Python? Unfortunately 1000 daily emails is way above the line where you can use some public SMTP provider and expect no trouble. You can of course try to set your own server, but that would mean that some of subscribers certainly going to miss your mail for quite some time and it's doesn't scale too well. Gmail / G Suite have usual limit of 2000 messages per day and you can also try other large providers like russian Yandex, but they also have about 2000 messages limit. I used both GMail and Yandex on multiple small projects for notification / email verification and never had issues, but I only ever sent below 500 messages / day. If you still decide to try run your own server or use public SMTP make sure to use and follow best practices before you start sending anything: sent from your project public domain, add mandatory unsubscribe link and headers, only add links to trusted domains and avoid link shorteners, make sure that you handle rejected mail and not sent anything to deleted accounts, etc. So it's would take weeks of work at best to setup it properly.