n8n Kit Weekly Newsletter Growth to Slack & Telegram

Get your newsletter growth numbers in Slack or Telegram every Monday

This n8n workflow automatically pulls your newsletter subscriber stats from Kit (ConvertKit) and posts a concise weekly growth report to Slack and/or Telegram—so you always know new subscribers, cancellations, net growth, and your current list total at the start of the week.

What this workflow does

• Runs on a weekly schedule: Every Monday at 08:00 (you can change the day/hour via the Schedule Trigger).
• Fetches growth stats from your email platform: The workflow reads subscriber statistics from Kit (ConvertKit) using the v4 growth_stats endpoint over plain HTTP—no OAuth and no community nodes.
• Formats a 5-line weekly report: new subscribers, cancellations, net growth for the week, and your current list total.
• Posts to your chosen channel: The Slack and Telegram posting nodes are independent—delete the one you don’t use.
• Supports one-URL swaps: Use beehiiv, Mailchimp, or Buttondown by swapping to a single URL (per the workflow’s design).

Use cases

• SaaS operators who want weekly list health updates without logging into their email tool.
• Automation engineers building a consistent KPI reporting loop for marketing teams.
• Newsletter publishers tracking audience growth and tying outcomes back to ad spend and creatives.

Technical details

• Schedule Trigger: runs weekly (default Monday at 08:00).
• HTTP Request: calls Kit/ConvertKit v4 growth_stats over plain HTTP.
• Credential: create a header auth credential named X-Kit-Api-Key using your Kit API key.
• Slack integration: via incoming webhook URL in the “Post Report to Slack” step.
• Telegram integration: via bot token (in the Post Report to Telegram URL) and chat_id.
• Nodes used: code, sticky note, http request, schedule trigger.