MailChimp is an email-marketing service provider used to design and send emails, manage your subscribers, and track your campaign's performance. Our tools focus on maintaining subscriber information, bounce data, and unsubscribes as a way to maintain list health over the life of a campaign. If your list needs to be validated, we recommend using tools and services specifically designed for list cleaning.
Internet service providers (ISPs), anti-spam groups, and corporate email protection services set specific thresholds regarding spam complaints, undeliverable mail, and unsubscribe requests. As a bulk delivery service we're required to enforce these thresholds. Doing so helps us maintain our sending reputation and high deliverability standards and helps ensure that when you send campaigns using MailChimp, your emails reach your subscribers.
If you send a campaign to an old or stale list using MailChimp, you may see a high number of spam complaints, underliverable mail (bounces), or unsubscribes. These can raise red flags in our system and lead to account warnings or even permanent account suspension. We really don't want that to happen, so it's best to use a service that's specifically designed to clean your list before uploading it to MailChimp.
If you have a list that needs to be validated or cleaned prior to importing to MailChimp, here are a few services we recommend: