As a journalist, I deal with a lot of PR companies that use constant contact. For years, I've built up a nice sieve filter that sports these people into my PR folder.

I guess to help with dkim/SPF issues, Constant Contact has started rewriting the from header to the sender's address rewritten to end with a ccsend domain. The sender's actual email address is now in the reply-to header. This has resulted in all my PR emails ending up in the main inbox.

Rather than rewrite hundreds of rules, I asked (foolishly?) ChatGPT if there was a way to check for ccsend in the from and then use the reply-to as the from.

This is what it came up with and this would be the first rule in the sieve file:

#Many PR companies use ccsend for lists. Check if headers contain "ccsend" and #then use reply-to for rules if allof (header :contains "from" "ccsend") { # Set "Reply-To" as "From" address set "from" "${reply-to}"; }

Before I put this into production, will this work? Do the rest of the rules go inside the last curly bracket or after it?

Thanks for any advice.

As a journalist, I deal with a lot of PR companies that use constant contact. For years, I've built up a nice sieve filter that sports these people into my PR folder.

I guess to help with dkim/SPF issues, Constant Contact has started rewriting the from header to the sender's address rewritten to end with a ccsend domain. The sender's actual email address is now in the reply-to header. This has resulted in all my PR emails ending up in the main inbox.

Rather than rewrite hundreds of rules, I asked (foolishly?) ChatGPT  if there was a way to check for ccsend in the from and then use the reply-to as the from.

This is what it came up with and this would be the first rule in the sieve file:

#Many PR companies use ccsend for lists. Check if headers contain "ccsend" and #then use reply-to for rules if allof (header :contains "from" "ccsend") { # Set "Reply-To" as "From" address set "from" "${reply-to}"; }

Before I put this into production, will this work? Do the rest of the rules go inside the last curly bracket or after it?

Thanks for any advice.