# Newsletter Glossary Source: https://joinbreaker.ai/newsletter-glossary Definitions of email newsletter terms. Each term is available as Markdown at the linked URL. ## A - [A/B testing](https://joinbreaker.ai/newsletter-glossary/ab-testing.md) - [Alt Text](https://joinbreaker.ai/newsletter-glossary/alt-text.md) - [AMP for Email](https://joinbreaker.ai/newsletter-glossary/amp-for-email.md) - [Analytics](https://joinbreaker.ai/newsletter-glossary/analytics.md) - [API](https://joinbreaker.ai/newsletter-glossary/api.md) - [Audience](https://joinbreaker.ai/newsletter-glossary/audience.md) - [Automations](https://joinbreaker.ai/newsletter-glossary/automations.md) ## B - [Best practices](https://joinbreaker.ai/newsletter-glossary/best-practices.md) - [Blacklist / Blocklist](https://joinbreaker.ai/newsletter-glossary/blacklist-blocklist.md) - [Bounce rate](https://joinbreaker.ai/newsletter-glossary/bounce-rate.md) - [Bounces](https://joinbreaker.ai/newsletter-glossary/bounces.md) ## C - [Call to action (CTA)](https://joinbreaker.ai/newsletter-glossary/call-to-action.md) - [Campaign](https://joinbreaker.ai/newsletter-glossary/campaign.md) - [Campaign editor](https://joinbreaker.ai/newsletter-glossary/campaign-editor.md) - [CAN-SPAM](https://joinbreaker.ai/newsletter-glossary/can-spam.md) - [CCPA (California Consumer Privacy Act)](https://joinbreaker.ai/newsletter-glossary/ccpa-california-consumer-privacy-act.md) - [Churn rate](https://joinbreaker.ai/newsletter-glossary/churn-rate.md) - [Click rate](https://joinbreaker.ai/newsletter-glossary/click-rate.md) - [Click through rate (CTR)](https://joinbreaker.ai/newsletter-glossary/click-through-rate.md) - [Contacts](https://joinbreaker.ai/newsletter-glossary/contacts.md) - [Content](https://joinbreaker.ai/newsletter-glossary/content.md) - [Conversion rate (CVR)](https://joinbreaker.ai/newsletter-glossary/conversion-rate.md) - [CPC (Cost Per Click)](https://joinbreaker.ai/newsletter-glossary/cpc.md) - [CPM (Cost Per Mille)](https://joinbreaker.ai/newsletter-glossary/cpm.md) - [Custom fields](https://joinbreaker.ai/newsletter-glossary/custom-fields.md) ## D - [Deliverability](https://joinbreaker.ai/newsletter-glossary/deliverability.md) - [Delivery rate](https://joinbreaker.ai/newsletter-glossary/delivery-rate.md) - [DKIM](https://joinbreaker.ai/newsletter-glossary/dkim.md) - [DMARC](https://joinbreaker.ai/newsletter-glossary/dmarc.md) - [Double opt-in](https://joinbreaker.ai/newsletter-glossary/double-opt-in.md) - [Drip Campaign](https://joinbreaker.ai/newsletter-glossary/drip-campaign.md) - [Dynamic content](https://joinbreaker.ai/newsletter-glossary/dynamic-content.md) ## E - [Email authentication](https://joinbreaker.ai/newsletter-glossary/email-authentication.md) - [Email client](https://joinbreaker.ai/newsletter-glossary/email-client.md) - [Engagement](https://joinbreaker.ai/newsletter-glossary/engagement.md) - [Engagement score](https://joinbreaker.ai/newsletter-glossary/engagement-score.md) - [ESP](https://joinbreaker.ai/newsletter-glossary/esp.md) - [Export](https://joinbreaker.ai/newsletter-glossary/export.md) ## F - [Feedback loop (FBL)](https://joinbreaker.ai/newsletter-glossary/feedback-loop.md) - [Footer](https://joinbreaker.ai/newsletter-glossary/footer.md) ## G - [GDPR (General Data Protection Regulation)](https://joinbreaker.ai/newsletter-glossary/gdpr-general-data-protection-regulation.md) - [Growth](https://joinbreaker.ai/newsletter-glossary/growth.md) ## H - [Header](https://joinbreaker.ai/newsletter-glossary/header.md) - [Hero image](https://joinbreaker.ai/newsletter-glossary/hero-image.md) ## I - [Import](https://joinbreaker.ai/newsletter-glossary/import.md) - [Inactive subscriber](https://joinbreaker.ai/newsletter-glossary/inactive-subscriber.md) - [Inbox placement](https://joinbreaker.ai/newsletter-glossary/inbox-placement.md) - [Integrations](https://joinbreaker.ai/newsletter-glossary/integrations.md) - [IP address](https://joinbreaker.ai/newsletter-glossary/ip-address.md) - [ISP](https://joinbreaker.ai/newsletter-glossary/isp.md) ## K - [Knowledge Base](https://joinbreaker.ai/newsletter-glossary/knowledge-base.md) ## L - [List fatigue](https://joinbreaker.ai/newsletter-glossary/list-fatigue.md) - [List hygiene](https://joinbreaker.ai/newsletter-glossary/list-hygiene.md) ## M - [Manage preferences](https://joinbreaker.ai/newsletter-glossary/manage-preferences.md) - [Migration](https://joinbreaker.ai/newsletter-glossary/migration.md) - [Monetization](https://joinbreaker.ai/newsletter-glossary/monetization.md) - [MTA (Mail Transfer Agent)](https://joinbreaker.ai/newsletter-glossary/mta.md) - [MX record](https://joinbreaker.ai/newsletter-glossary/mx-record.md) ## N - [Newsletter](https://joinbreaker.ai/newsletter-glossary/newsletter.md) ## O - [Open rate](https://joinbreaker.ai/newsletter-glossary/open-rate.md) - [Opt in](https://joinbreaker.ai/newsletter-glossary/opt-in.md) - [Opt out](https://joinbreaker.ai/newsletter-glossary/opt-out.md) ## P - [Partner Program](https://joinbreaker.ai/newsletter-glossary/partner-program.md) - [Permission-based sending](https://joinbreaker.ai/newsletter-glossary/permission-based-sending.md) - [Personalization](https://joinbreaker.ai/newsletter-glossary/personalization.md) - [Plain text version](https://joinbreaker.ai/newsletter-glossary/plain-text-version.md) - [Preference center](https://joinbreaker.ai/newsletter-glossary/preference-center.md) - [Preheader text](https://joinbreaker.ai/newsletter-glossary/preheader-text.md) - [PTR record (Reverse DNS lookup)](https://joinbreaker.ai/newsletter-glossary/ptr-record.md) - [Publication](https://joinbreaker.ai/newsletter-glossary/publication.md) ## R - [Re-engagement campaign](https://joinbreaker.ai/newsletter-glossary/re-engagement-campaign.md) - [Rendering](https://joinbreaker.ai/newsletter-glossary/rendering.md) - [Responsive design](https://joinbreaker.ai/newsletter-glossary/responsive-design.md) - [Retargeting](https://joinbreaker.ai/newsletter-glossary/retargeting.md) - [Revenue per email (RPE)](https://joinbreaker.ai/newsletter-glossary/revenue-per-email.md) - [Revenue Per Recipient (RPR)](https://joinbreaker.ai/newsletter-glossary/revenue-per-recipient-rpr.md) - [RSS feed](https://joinbreaker.ai/newsletter-glossary/rss-feed.md) ## S - [Safelist](https://joinbreaker.ai/newsletter-glossary/safelist.md) - [Seed list](https://joinbreaker.ai/newsletter-glossary/seed-list.md) - [Segments](https://joinbreaker.ai/newsletter-glossary/segments.md) - [Senders](https://joinbreaker.ai/newsletter-glossary/senders.md) - [SMTP (Simple Mail Transfer Protocol)](https://joinbreaker.ai/newsletter-glossary/smtp-simple-mail-transfer-protocol.md) - [Spam trap](https://joinbreaker.ai/newsletter-glossary/spam-trap.md) - [SPF](https://joinbreaker.ai/newsletter-glossary/spf.md) - [Subject line](https://joinbreaker.ai/newsletter-glossary/subject-line.md) - [Subscribe forms](https://joinbreaker.ai/newsletter-glossary/subscribe-forms.md) - [Subscribers](https://joinbreaker.ai/newsletter-glossary/subscribers.md) ## T - [Template](https://joinbreaker.ai/newsletter-glossary/template.md) - [Throttling](https://joinbreaker.ai/newsletter-glossary/throttling.md) - [TLS (Transport Layer Security)](https://joinbreaker.ai/newsletter-glossary/tls-transport-layer-security.md) - [Transactional email](https://joinbreaker.ai/newsletter-glossary/transactional-email-lmis8.md) - [Triggered email](https://joinbreaker.ai/newsletter-glossary/triggered-email.md) ## U - [Unsubscribe](https://joinbreaker.ai/newsletter-glossary/unsubscribe.md) - [URL](https://joinbreaker.ai/newsletter-glossary/url.md) ## W - [Webhooks](https://joinbreaker.ai/newsletter-glossary/webhooks.md) - [Welcome email](https://joinbreaker.ai/newsletter-glossary/welcome-email.md) - [Whitelist](https://joinbreaker.ai/newsletter-glossary/whitelist.md)