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For car wash operators, marketing managers & franchise owners

Run weather-triggered promos with one approval

Every morning, WebRun checks your weather-trigger conditions logged in Google Sheets, and when rain is forecast or a recent weather event qualifies, it drafts a targeted promo email in Mailchimp and notes the campaign details in the sheet, then posts the draft to Slack for your team to review and approve before any message reaches a customer.

  • No credit card
  • Under $0.01 per run
  • Cancel anytime
14,115 templates Safe automation No code
Every day at 7:00 AM WebRun
1 Google Sheets check weather trigger conditions
2 Mailchimp draft weather promo email
3 Slack queue for team approval
Run a sample
In short

How do I run automatic rain-guarantee promotions at my car wash?

WebRun checks your weather-trigger conditions in Google Sheets every morning and, when rain qualifies, drafts a timely promo email in Mailchimp with a relevant offer for your members and recent customers. Every draft is left unsent and posted to Slack for team approval, so your team captures the weather moment without risking an unsanctioned send.

  • Weather promo drafts are ready within hours of a rain event, without anyone monitoring forecasts
  • A 7-day cooldown prevents over-sending to the same customer list
  • No weather promo reaches a customer without a team member approving it first

Built for car wash operators · marketing managers · franchise owners

Step by step

What does WebRun do on every run?

The exact actions WebRun takes, in order - in plain language, so you can adjust anything.

  1. WebRun signs in and gets to work

    Opens sheets.google.com in a real browser with your saved login - no setup, no API keys.

  2. 1
    Google Sheets - check weather trigger conditions
    google.com How to Automate Google Sheets
    WebRun in Google Sheets: check weather trigger conditions
    WebRun opens Google Sheets to check weather trigger conditions.
    • Open the weather-trigger tracking sheet and check the current day's weather condition column
    • Determine if the conditions match a qualifying trigger: rain in the last 24 hours or rain forecast within 48 hours
    • Log the trigger event, date, and location so the promo history is tracked in the sheet
    • Skip the run if no qualifying condition is found or if a promo was already sent in the past 7 days

    Done when A qualifying weather event is confirmed and logged, or the run is skipped cleanly.

  3. 2
    Mailchimp - draft weather promo email
    mailchimp.com How to Automate Mailchimp
    WebRun in Mailchimp: draft weather promo email
    WebRun opens Mailchimp to draft weather promo email.
    • Draft a weather-triggered promo email in Mailchimp referencing the current weather condition
    • Include a clear offer such as a rain-guarantee rewash or a discounted add-on
    • Set the send list to your active member and recent-customer segments but leave the campaign unsent
    • Leave the draft for team review with a clear subject line indicating it is weather-triggered

    Done when A weather promo email draft is ready in Mailchimp, unsent, with the offer and list configured.

  4. 3
    Slack - queue for team approval
    slack.com How to Automate Slack
    WebRun in Slack: queue for team approval
    WebRun opens Slack to queue for team approval.
    • Post a Slack alert to the marketing channel with the weather condition and the proposed promo
    • Include a direct link to the Mailchimp draft so approval takes one click
    • Note the 24-hour window during which the promo is most timely so the team acts quickly

    Done when Your team has the weather promo draft and approval link in Slack within the timely window.

Run settings

How is each run configured?

Starting pageWhere Chrome opens at the start of each run
sheets.google.com
ScheduleRuns automatically on this cadence
Every day at 7:00 AM
DeliveryHow each run's result reaches you
Promo draft · Slack
OutputWhat each run produces - A Slack alert with the weather trigger event and a Mailchimp draft promo link, queued for one-click team approval before sending.
Text
Setup & safety

Secure by default

Connect once, stays signed in

WebRun signs in once and keeps each session in a persistent environment, so every run picks up right where it left off.

Your credentials stay in your own private environment - WebRun never stores your passwords.
Strict Lockdown

Every action is checked against this policy before it runs.

Domains ALLOWLIST
Typed input ALLOW
Shell command BLOCK
File uploads BLOCK
Runs in a contained environment More on policies
Good to know

Questions, answered

Will it send the promo email to customers automatically when it rains?

No. Every weather promo is drafted in Mailchimp and left completely unsent. WebRun posts the draft link to Slack for your team to review the offer and approve before any email reaches a customer.

How does it decide when a weather trigger is met?

You define the qualifying conditions in your Google Sheet, such as rain in the past 24 hours or rain forecast in the next 48 hours. WebRun checks that column each morning and only drafts a campaign when a condition is met.

What stops it from sending a promo every rainy day?

WebRun logs each promo event in the sheet and enforces a 7-day cooldown per location, so customers are not hit with a weather offer every time there is light drizzle.

Put this on autopilot.

Turn it on in minutes - or have our team set it up for you.