You can directly send email signups from a custom form in Webflow to Letterdrop by copy/pasting a bit of code.
Go to webflow.com and login to your account. Open your site.
Add a form to your site by following this Webflow tutorial.
To work with Letterdrop, you will add a form field for email. Make sure the field ID is called
Once you've added your form in Webflow, select your Form element in the left nav.
Selected our form, Form 3
Then selecting Form Settings on the top right.
Our form ID is
In the field called Action:
https://letterdrop.com/api/v1/subscriber/add/followed by your Letterdrop domain. If your Letterdrop site was
[my-newsletter.letterdrop.com](<http://my-newsletter.letterdrop.com>)for example, your domain is
my-newsletter, so in the Action field, you would enter