Powerful 2-way HubSpot and Mailchimp integration
Real-time, 2-way sync between HubSpot and Mailchimp. Sync contacts and email engagement.
Keep HubSpot contacts in 2-way sync with Mailchimp audiences
- Sync exactly what you need. Choose all contacts or specific HubSpot/Mailchimp lists. Map which contact and company fields stay in 1-way or 2-way sync.
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No more messy data. We handle duplicates, archived contacts, and email address changes automatically.
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Turn engagement into leads. Create new HubSpot contacts when people subscribe or engage with Mailchimp emails.
Sync email engagement from Mailchimp to HubSpot, give salespeople more context
Record campaign and flow engagement (sends, opens, clicks, bounces, unsubscribes) on HubSpot timelines—down to which links were clicked. Historical sync available.
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Surface buying signals. Build lists and workflows from real engagement, not guesses.
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Build call lists. Automatically share hot, recently engaged leads with sales.
Monitor progress, see what needs fixing
Get clear visibility into sync status and activity, pinpoint errors, and resolve issues quickly—so your teams can trust the data they see.
“An Excellent Product That Works”
"I have used many products over the years to try and sync data between various applications. Outfunnel is the first one that actually works the way it should and is very easy to implement. Also, their customer support is really good."
- Problem
- I used Outfunnel to sync my contacts with Mailchimp.
- What they liked
- Easy to implement and it works.
Frequently asked questions
Why should I use Outfunnel instead of the native integration?
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HubSpot’s own native integration with Mailchimp syncs your HubSpot contacts to Mailchimp and syncs Mailchimp’s email activity over to HubSpot. However, this only works for new contacts added to the HubSpot (existing contacts are not synced when you connect the tools), and contacts or updates to contacts’ info are not synced from HubSpot to Mailchimp.
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Data sync by HubSpot syncs contacts both ways between the two systems, but it does not record Mailchimp email engagement in HubSpot. Additionally, custom fields are only included in higher tier plans.
Outfunnel vs Zapier: what’s the difference for HubSpot–Mailchimp syncing?
Outfunnel is purpose-built for the kind of integration that HubSpot–Mailchimp sync is. Unlike generic iPaaS tools such as Zapier or Make, it offers pre-defined sync workflows, bi-directional contact and engagement syncing, reliable monitoring, and fewer maintenance workflows—so marketers get accurate, always-on sync without stitching together custom zaps or scripts.
Especially with larger databases where data changes more frequently, there’s also a cost benefit to using Outfunnel.Â
How often is data synced between HubSpot and Mailchimp?
Data syncing frequency and speed varies across apps and the type of data.
Syncing contacts
- Outfunnel checks for updates in Mailchimp lists in real-time and and HubSpot Lists once every two hours. (If you add or remove a contact from the target segment in HubSpot then it will take a maximum of 2 hours for the data to sync.)
- Field changes for contacts that are already in sync are updated in real-time (except Mailchimp tags that sync every 2 hours)
Syncing email and ecommerce engagement from Mailchimp
All campaign data syncs from Mailchimp every two hours.
PS. You can always initiate a manual sync by clicking “Sync now” on the connection.
Which Mailchimp events can be synced to HubSpot?
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Email events covered: Sends, delivered, opens, clicks (including details on which links were clicked), bounces, unsubscribes.
Can Outfunnel handle large volumes of data?
Yes, Outfunnel was built to sync large volumes of data!
Outfunnel was built to respect HubSpot/Mailchimp API limits. Data queues intelligently during spikes and there are automatic retries in place.Â
You can get an overview of sync status at any time. When a sync failed, you’ll see a clear error message (eg. duplicate contact, email missing) for each errored contact.Â
How much does Outfunnel cost?
Our plans start at just $29 per month, and there’s a 17% discount for signing up to an annual subscription. Our standard plan is perfect for syncing relatively small volumes of data or for syncing lead forms to a CRM.
Our Professional plan starts at $99 per month (excluding annual discount).  It’s great for syncing larger volumes of data and for more demanding teams that want to track website visits of their contacts and score their leads.
All plans are available with a 14-day free trial. See our detailed pricing.
Ready to sync HubSpot and Mailchimp bi-directionally?
Use this integration free for 14 days