What is the right way to automate posting content to a channel?

[WofWca]

Also similar topics:

• Workaround broadcast+feedRSS
• To add bots to channels [broadcast an RSS feed as a news channel]

And this project seems very close to what you’re asking, but that is for groups and not channels, so you might need to adapt it: GitHub - adbenitez/feedsbot: Subscribe to RSS/Atom in Delta Chat groups · GitHub.