Email suppression lists

Quoted on this wiki

Every place a page here uses this source, in the order the words come in it.

1. Email service providers (ESP) keep suppression lists to ensure they don’t send messages from servers that rejected them before or from people who explicitly do not want messages from you. “A message experiences a hard bounce. This means that either the recipient email address does not exist or the recipient email server blocked delivery.” A person lodges a spam complaint against a message.

   In Bounce types and SMTP codes

2. How Customer.io observes the suppression list “When a message experiences a hard bounce or a spam complaint, our email service provider (ESP) adds the email address to its suppression list.” Suppressed messages and billing

   In Suppression and unsubscribe tools

3. A person lodges a spam complaint against a message. “ESP suppression only prevents people from receiving emails.” If you want people with certain identifiers to never again receive messages or start workflows in your workspace, learn how to delete and suppress identifiers.

   In Suppression and unsubscribe tools

4. A person lodges a spam complaint against a message. “ESP suppression only prevents people from receiving emails.” If you want people with certain identifiers to never again receive messages or start workflows in your workspace, learn how to delete and suppress identifiers.

   In Suppression list retention

5. A person lodges a spam complaint against a message. “People with suppressed emails can still receive messages from other channels, start automations, and more.” If you want people with certain identifiers to never again receive messages or start workflows in your workspace, learn how to delete and suppress identifiers.

   In Suppression list retention

6. Email service providers (ESP) keep suppression lists to ensure they don’t send messages from servers that rejected them before or from people who explicitly do not want messages from you. “A message experiences a hard bounce. This means that either the recipient email address does not exist or the recipient email server blocked delivery.” A person lodges a spam complaint against a message.

   In Suppression list retention

7. ESP suppression only prevents people from receiving emails. People with suppressed emails can still receive messages from other channels, start automations, and more. “If you want people with certain identifiers to never again receive messages or start workflows in your workspace, learn how to delete and suppress identifiers.” When a suppressed email can still receive emails

   In Suppression list retention