Here are some that I read that I recommend:

https://tldr.tech/ - Overview on Tech News in a summarised digest, skip if you're not into daily emails, otherwise great.

https://architecturenotes.co/ -- Software Architecture focused, weekly.

https://terminaltrove.com/ - Focused on new and interesting terminal tools, weekly newsletter.

https://www.pointer.io/ - engineering and leadership focused, current favourite, 2 emails a week.

Some of these have the option to subscribe to RSS feeds as a bonus too.