using terms from application "Mail"

    on perform mail action with messages selectedMessages

        try

            log "Starting script execution"

            tell application "Reminders"

                repeat with theMessage in selectedMessages

                    try

                        tell application "Mail"

                            -- Fetch subject and message ID

                            set emailSubject to subject of theMessage

                            set messageID to message id of theMessage

                            -- Mark email as read

                            set read status of theMessage to true

                            -- Change email color to blue

                            set background color of theMessage to blue

                        end tell

                        -- Log values for debugging

                        log "Email Subject: " & emailSubject

                        log "Message ID: " & messageID

                        -- Construct reminder properties

                        set reminderText to emailSubject

                        set emailLink to "message://%3C" & messageID & "%3E"

                        set reminderNotes to "Link to the email: " & emailLink

                        -- Create reminder in default list

                        tell list "Reminders" -- Change "Reminders" to your desired list name

                            make new reminder with properties {name:reminderText, body:reminderNotes}

                        end tell

                    on error errMsg

                        log "Error processing message: " & errMsg

                    end try

                end repeat

            end tell

        on error errMsg

            log "Script execution error: " & errMsg

        end try

        log "Script finished execution"

    end perform mail action with messages

end using terms from

You need to change the "list" (see "tell list") you want the reminder to go into.

This will take an email, mark it as read, change the background color of the email to blue, create the reminder, and then exit.

You can't put the "message://" link in the URL field directly with AppleScript, as there is no method within the AppleScript reminders dictionary to access "URL". Shortcuts.app can, but AppleScript can't. (I know, right?)

But I have a Shortcut that I execute from the end of this AppleScript that moves it for me. You can execute the shortcut from the AppleScript by putting this after the last "end tell”.

            do shell script "shortcuts run \"URL Mover for Reminders message\""

            log "Shortcut executed successfully"

There's the shortcut. It'll handle both "message://" and "<message:" links (the latter created by OmniFocus if you moved from OmniFocus to Reminders).

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