https://docs.whmcs.com/9-1/tags/opt-in/Recent content in opt-in onHugo -- gohugo.iohttps://docs.whmcs.com/9-1/clients/client-profile/profile-tab/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/clients/client-profile/profile-tab/Lists account fields (Email Address, Payment Method, Currency, Status, Client Group, Email Notifications), the Marketing Opt-In Consent History view, and per-client settings including Late Fees, Overdue Notices, Tax Exempt, Separate Invoices, Disable CC Processing, Marketing Emails Opt-in, Status Update, and Allow Single Sign-On.https://docs.whmcs.com/9-1/system/general-settings/general-settings-other/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/general-settings/general-settings-other/Documents Marketing Emails opt-in settings, Admin Client Display Format, Default to Client Area, Client Area User Management, Client Registration, Optional/Locked Profile Fields, Show Cancellation Link, Banned Subdomain Prefixes, Encoded File Loading, Event Handling (Concurrent/Inline/Cron), Display Errors, Log Errors, SQL Debug Mode, and Hooks Debug Mode.https://docs.whmcs.com/9-1/clients/client-management-tutorials/require-opting-in-to-emails/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/clients/client-management-tutorials/require-opting-in-to-emails/Explains configuring Marketing Emails and Require User Opt-In in the Other tab of General Settings to control the default state of the Newsletter Opt-In toggle, and notes the Marketing Email? checkbox required when sending campaigns via Email Campaigns.