# Mailchimp

> Keep your Mailchimp audience in step with Selloff: subscribed clients sync with their language, country and collecting areas, and campaign lists become Mailchimp segments.

- URL: https://www.selloff.auction/integrations/mailchimp
- Language: English
- Category: Marketing & communication
- Vendor website: https://mailchimp.com
- Last updated: 2026-10-07
- Français: https://www.selloff.auction/fr/integrations/mailchimp.md

## At a glance

- Subscribed email addresses added to your Mailchimp audience automatically
- First name, last name, language, country and collecting areas sent as merge fields
- Selloff campaign recipient lists pushed as static segments
- Unsubscribes and profile changes in Mailchimp sent back to Selloff
- Optional double opt-in with an expiring confirmation link

## What the Mailchimp integration does

Mailchimp is an email marketing platform. Selloff keeps it supplied with the right contacts, so that your sale announcements and newsletters reach clients who asked for them, grouped by what they collect.

## How it works

- **Subscriptions.** When an email address on a client record is subscribed to marketing emails, Selloff adds it to your Mailchimp audience. With double opt-in enabled, the client first receives a confirmation link, valid for the time you set.
- **Merge fields.** Selloff sends the first name, last name, language, country and the client's collecting areas. When one of these changes in Selloff, Mailchimp is updated. The language and country choices in Mailchimp are kept in line with Selloff every night.
- **Campaign segments.** Build the recipient list of a campaign in Selloff, for example from a [smart list](https://www.selloff.auction/features/segmentation-smart-lists.md) of clients interested in a category. One click creates a static segment in Mailchimp with the subscribed addresses of that list, ready for your email.
- **Feedback.** Mailchimp webhooks report unsubscribes, subscriptions and profile changes back to Selloff, so the client record stays accurate.

Setup takes an API key and the ID of the Mailchimp audience to sync with. Only one marketing email service is active at a time. See also [email campaigns](https://www.selloff.auction/features/email-campaigns.md).

## Related features

- [Email campaigns](https://www.selloff.auction/features/email-campaigns.md): Build targeted campaigns from contact lists, push them as segments to Mailchimp or Brevo, and follow costs, recipients and the business they bring in.
- [Segmentation & smart lists](https://www.selloff.auction/features/segmentation-smart-lists.md): Classify contacts with tags and collecting areas, then save dynamic lists that update themselves from bids, invoices, consignments and activities.
- [Client records & history](https://www.selloff.auction/features/client-records.md): One record per contact with addresses, ID and bank details, tags, consignments, bids, invoices and a complete activity history shared by the whole team.
- [Email tracking](https://www.selloff.auction/features/email-tracking.md): Every email Selloff sends is logged on the contact with its content, attachments and delivery status, from queued to delivered, opened or bounced.

## Frequently asked questions

### Where do I design and send the newsletter?

In Mailchimp. Selloff decides who receives it: you build the recipient list in a Selloff campaign, push it to Mailchimp as a static segment, then create and send the email to that segment in Mailchimp.

### What happens when a client unsubscribes in Mailchimp?

Mailchimp notifies Selloff through a webhook and the email address is marked as unsubscribed on the client record. It is then left out of the segments you push for later campaigns.