Boxcar ACCESS_TOKEN TITLE MESSAGE Discord WEBH_URL SERVER_ICON DISCORD_TAG_ID Gotify SERVER_URL APP_TOKEN TITLE MESSAGE Join API_KEY TITLE MESSAGE ntfy.sh SERVER_URL NTFY_TOKEN TOPIC TITLE MESSAGE Prowl API_KEY APP_NAME TITLE MESSAGE PushBits SERVER_URL APP_TOKEN TITLE MESSAGE Pushbullet TOKEN TITLE MESSAGE Pushover USER_KEY APP_TOKEN MESSAGE Pushplus TOKEN TOPIC CHANNEL WEBHOOK CALLBACKURL TITLE MESSAGE ServerChan SENDKEY CHANNEL OPENID TITLE MESSAGE Slack WEBH_URL APP_NAME TITLE MESSAGE Telegram BOT_TOKEN TITLE MESSAGE Bark PUSHURL GROUP SOUND TITLE MESSAGE