Restrict Content Pro is a popular WordPress membership plugin for creating membership websites.
It helps you manage user registrations, sell paid memberships, and restrict access to content on your site.
MailOptin can automatically sync members in Restrict Content Pro to your SendGrid Email Marketing email list or give users the option to subscribe during membership registration.
You can also add Restrict Content Pro members to a specific SendGrid Email Marketing list based on the membership level they are subscribed to, assign tags, and map user data to custom fields.
MailOptin converts visitors to leads and constantly keep your list subscribers engaged with email automation.