Grow Your Email List From Social
Every morning, WebRun checks who liked or commented on your LinkedIn posts and Instagram content yesterday, identifies new contacts not yet in your Mailchimp audience, adds them as subscribers with a tag marking their source, and sends you a Slack summary of who was added.
Instagram
find engaged followers from recent posts
How can I automatically grow my email list from social media engagement?
Every morning, WebRun checks who liked or commented on your LinkedIn posts and Instagram content the previous day, identifies new contacts not yet in your Mailchimp audience, adds them as subscribers tagged by source, and sends you a Slack summary of who was added.
- Your Mailchimp audience grows daily from social engagement - without manual effort
- Every subscriber is tagged with the platform and post that brought them in
- You get a Slack summary each morning of exactly who was added
Built for email marketers · content creators · social media managers · marketing teams growing an audience
What does WebRun do on every run?
The exact actions WebRun takes, in order - in plain language, so you can adjust anything.
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WebRun signs in and gets to work
Opens
linkedin.comin a real browser with your saved login - no setup, no API keys. -
1
LinkedIn - find engaged contacts from recent posts
linkedin.com
WebRun opens LinkedIn to find engaged contacts from recent posts. - Open LinkedIn and check the last 7 days of post activity under Analytics
- Capture the names and LinkedIn profiles of people who liked or commented on your posts
- Note the post they engaged with for tagging purposes
Done when Engaged LinkedIn contacts from the last 7 days are captured with their engagement source.
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2
Instagram - find engaged followers from recent posts
WebRun opens Instagram to find engaged followers from recent posts. - Open Instagram and review likes and comments on posts published in the last 7 days
- Capture commenter usernames and note the post they engaged with
- Filter out accounts that look like bots based on follower-to-following ratio
Done when Genuine engaged Instagram contacts are captured with their engagement source.
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3
Mailchimp - add new contacts to the audience
mailchimp.com
WebRun opens Mailchimp to add new contacts to the audience. - Open Mailchimp and go to Audience then Add Contacts
- For each new contact not already in the audience, add them with tags: platform source and engagement date
- Skip anyone who is already subscribed or previously unsubscribed
Done when All new contacts are added to the Mailchimp audience with source tags and no duplicates or unsubscribes overridden.
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4
Slack - report how many contacts were added
slack.com
WebRun opens Slack to report how many contacts were added. - Post a daily summary in #marketing with the count of new contacts added and their source breakdown
Done when You have a Slack report of today's list growth with platform breakdown.
How is each run configured?
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.
Instagram
Sign in once
Every action is checked against this policy before it runs.
Questions, answered
Does it send any emails to the new contacts?
No. It only adds contacts to the audience list - it never triggers a campaign or sends a message. Your welcome automation in Mailchimp handles that if you have one set up.
Is this compliant with email marketing rules?
WebRun adds contacts with an opted-in source tag. You are responsible for confirming your list-building practices comply with CAN-SPAM, GDPR, or the rules in your jurisdiction before running this workflow.
What stops it adding people who already unsubscribed?
It checks existing audience status before adding anyone - unsubscribed and cleaned contacts are always skipped so your suppression list is respected.
Related templates
Instagram›Put this on autopilot.
Turn it on in minutes - or have our team set it up for you.