Asking your new sign-ups to confirm their interest with a "double opt-in" isn't required, but it's the strictest way to obtain consent to send your emails. It may be an option that's right for you because it gives you high confidence that the person who subscribes really wants to receive your emails.
When you create a sign-up form or "contact us" form in WordPress and select the contact list to add new contacts to, you're presented with the Form Options section:
The form allows for minimal styling with custom CSS classes by clicking Contact Form > Settings > Global Form CSS Settings, but inherits as much as it can from the theme you're using on your website. If you don't like the look of your form, a front-end developer with CSS knowledge can look over your site to determine if there are any style rules that are interfering with the form. For further help, you can visit the Support forum.
When the opt-in box is on your sign-up form, your contacts have to check the box to be added to your list. If the box is unchecked, it won't prevent your contact from submitting the form — but that contact won't be added to your list.
![]() | Did you know? Contacts who join your list through the WordPress Forms plugin, are all automatically documented as having given express consent. To see the contacts who have given express consent, make sure you've enabled advanced email permissions in your account. |
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