@ThisWeekInRust think you've forgot to configure SPF/DKIM with your mailing list service. ProtonMail gives this nice notice and iirc by default the emails ended up in spam as well.pic.twitter.com/NCrZWKYIlq
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We use a http://rust-lang.org email to send emails, and for SPF/DKIM, we'll probably need to switch to our own domain http://this-week-in-rust.org (whose DNS we control). We'll look into this.