Buttondown Documentation

Buttondown Documentation

Alt text AMP API BIMI CAC CAN-SPAM act Captcha Cold email CPM CSV CTA DKIM DMARC DNS Double opt-in Drip sequence ESP GDPR Gravatar Headless mode Hosting domain JSON-LD LaTeX oEmbed Omnichannel OpenAPI Paywall Permanent failure POSSE Precedence: Bulk Preheader REST Reverse DNS RSS Sending domain Slug SMTP SpamAssassin SPF Temporary failure Transactional email Webhooks Webmentions WYSIWYG

© 2016–2024 Buttondown LLC.

CPM

CPM stands for "cost per mille". It's a metric that measures how much it costs to reach 1,000 people with an ad.

© 2016–2024 Buttondown LLC.