How a sign-up form fills your list

A sign-up form on your website adds people to your list. Every sign-up is sorted before it's saved, so bots stay out. Then every new address is checked like any list you upload, before it's ever mailed.

The path a sign-up takes

• Someone signs up on your website.
• Bots are kept out.
• A real person joins the form's list.
• Their address is checked before it's ever mailed.

Who gets in, and who doesn't

A bot that's told it worked has no reason to try again.

Double opt-in

With Double opt-in on, each person is emailed a confirmation link first, and joins the list only when they click it. Until then they see Almost there — check your inbox to confirm your subscription. With it off, they join the list as soon as they sign up.

Checked before it's mailed

• Adding someone to a list starts its cleaning, as it does for a list you upload.
• If the address has been checked before, on any list, that answer is reused.
• If not, its own mail server is asked. Where the server can't say, a probe confirms it first.
• Only someone whose address checked out is mailed.

Why every list is cleaned and What probing is explain the checks.

See a form's settings

1. 1

   Open Forms. Each sign-up form shows the list it fills.

2. 2

   Open the form.

3. 3

   Open its Settings tab. Adds people to shows the list every sign-up joins, beside the Double opt-in switch.

4. 4

   Under Spam protection: Websites allowed to use this form, Fastest a person can submit (seconds), the sign-ups each visitor can make per hour and per day, and the sign-ups per day in total.

To make a form and put it on your website, follow Collect sign-ups with a form.