>I do not see why the IETF needs to make use of a "major" email-delivery >service at all. Surely there are some mid-tier or similar equivalents. Because these days if you're not major, you are more likely to have your mail blocked or treated as spam. Did people miss the first sentence of Nicolas's post? > For context, absolutely none of the major email delivery providers (AWS SES, SendGrid, Mailgun, Postmark, SMTP_com, etc.) support ipv6.
