There are several tools available to assist with data cleanup:
Email Verification Services: Tools like ZeroBounce, NeverBounce, and BriteVerify help validate and verify email addresses. CRM Systems: Customer Relationship Management systems like Salesforce and HubSpot can assist in maintaining clean and updated subscriber data. Email Marketing Platforms: Platforms like Mailchimp, Constant Contact, and SendinBlue offer built-in data cleanup and segmentation features.