olemus
meilisõnumi saamise ettekavatsematu hilinemine
=
unintentional lag in email delivery

ülevaateid
https://www.mailenable.com/kb/content/article.asp?ID=ME020148

https://www.labnol.org/internet/email-delivery-delayed/25922/

https://mxtoolbox.com/EmailHeaders.aspx
https://mxtoolbox.com/Public/Content/EmailHeaders/

vt ka
- meiliviivitus