help/
168 pages · Updated July 18, 2026
Pages
- How to Set Up Promotions in Letterhead
- What is BIMI and How to Set It Up
- How to Edit a Campaign in an Organization-wide Promotion?
- How to Use Company-Level Promotions
- How Do I Copy Promotions Using the Letterhead Extension?
- How Do I Add a Team Member to Letterhead?
- How to Add External Promotions Using the HTML Block
- How to Use Auto Inject for Promotions in Newsletters
- How to use HTML Promotions
- How to Update the Character Limit on a Promotion Type
- Letterhead's Recipient Validation
- What Are Letterhead's Default Promotion Types?
- Page not found | Help Center
- Page not found | Help Center
- How to Reset Your Password
- How do I add an article to my Curations library through Zapier?
- Adding RSS Feeds in Letterhead
- What is the Letterhead browser extension?
- Curating Articles with Letterhead’s Browser Extension
- When to Use Curations or URL Blocks in Your Newsletter
- Managing Your Curation Library
- How to Determine Your Tenant Prefix for the Letterhead Browser Extension
- Automatic IAB Categorization: Organizing Your Curations
- Understanding Advanced Feed Crawling in Letterhead
- Revalidating Your RSS Feed in Letterhead
- Automatically Tag New RSS Feed Items
- How Does Letterhead Automatically Delete Old Curations?
- Manually Adding Articles to Your Curations Library in Letterhead
- How Letterhead Detects Duplicates in Your RSS Feed
- Zapier
- Is it possible for administrators to re-subscribe audience members?
- How can I add a subscriber to my account?
- Understanding bounces & Letterhead's bounce handling
- Bulk Tag Audience Members
- What is the Organization Audience page?
- Do I need to warm up and verify emails prior to my first send with Letterhead?
- Can I Subscribe the Same Audience to a New Newsletter?
- What Happens When Someone Unsubscribes From Your Newsletter?
- Can I resend the 'Verify your subscription' email to my audience to remind them to confirm their subscription?
- Why You Can’t Delete Audience Members in Letterhead
- Mass Deletion of Subscriber Contact Details
- How can I find my Organization's API Key?
- How do you opt-out of double opt-ins?
- Using the 2-Column Promotion Block
- Promotions | Help Center
- Settings | Help Center
- How do I add or update audience members through Zapier?
- How Do I Import Subscribers?
- How to View or Edit an Audience Member
- How do tags and segments work?
- Audience Profile Activity Log
- Ensuring Successful Newsletter Delivery during ESP Migration
- Page not found | Help Center
- How can I request a new feature?
- Company-Level CRM Audience Sync Integration (HubSpot & Mailchimp)
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- Managing Company-Wide Promotions
- Managing Your Channel Settings
- How Can I Sign Up to Get Early Access to Letterhead's New Features?
- How can Letterhead integrate with other software?
- Reports Overview: Metrics, Columns, and Use Cases
- Letterhead Glossary
- Understanding the Audience, Engagement, and Delivery Organization Dashboards
- Organization Administrator Quick Start Guide
- How Can I Connect My Letterhead Account to Zapier?
- Letterhead Reporting
- Channel Administrator Quick Start Guide
- How to Use Company-Level Newsletter Templates in Letterhead
- Company Admin Quick Start Guide
- Content Contributor Quick Start Guide
- What is the click heat map?
- Company-Level Automations Errors Table
- How to Send a Test Email from Your Automation
- How do I use goals in Letterhead?
- How to Export Reports in Letterhead
- Cancel your account
- Contact Support
- What is a custom field, and why should I use it?
- Audience | Help Center
- Can I Delete Segments or Tags?
- Managing Audience Members in Pending Confirmation Status
- How do I use the RSS block?
- What are audience profile fields in Letterhead?
- How can I add curated content to my newsletter?
- How do I create and schedule a newsletter?
- Multi-user editing alert
- Create, Edit, Delete and Activate/Deactivate a Template
- Personalization Tags
- What Is the RSS (Legacy) Block?
- Why is the Preview & Schedule button is greyed out?
- How do I create and schedule a newsletter from a template?
- Why is my newsletter stuck in "Sending" or "Processing"?
- How to Add and Customize Polls in Your Newsletter
- Create an Automation for Welcome letters & Recurring newsletters.
- How do I setup social cards in my newsletter?
- How can I use HTML in Letterhead?
- How do I add a background image to my newsletter?
- How can my audience members easily share my newsletter?
- Newsletter Delivery and Engagement Metrics Report
- How to customize your newsletter using Heading and Paragraph blocks.
- What Is An Archive Page?
- How can I include my social profile as part of my newsletter?
- How to Run A/B Tests on Email Subject Lines in Letterhead
- Saved Block
- AI Text Block
- How does Letterhead address unsafe links?
- Understanding RSS Feed Errors in Letterhead
- How to Add and Customize a Logo in Your Newsletter
- How to Adjust Mobile Font Size and Padding in Letterhead
- How to Add a YouTube Video to Your Newsletter
- Why Did My Email Go to Spam?
- Why is my image not visible in my newsletter?
- How do I use the new Paragraph AI Rewrite tool? (Beta Feature)
- Drag and Drop a section
- How do I personalize my newsletters to my audience members?
- What can I do to improve my email deliverability?
- How does the Google docs integration work?
- Smart Subjects AI-Powered Subject Lines & Preview Texts
- Build a feedback survey in your newsletter
- What is Hide from archive?
- Can I use merge tags in subject line?
- How do I use the new design settings?
- How can I use webhooks with Letterhead?
- Letterhead API Documentation
- What options do I have when using the Evvnt block?
- Dynamic Content | Help Center
- Why is the Letterhead browser extension and/or URL block unable to pull information from my URL?
- Help Center
- Ensuring Your Images Appear in the RSS Composer Block
- How to change font color and style?
- What Permissions Does the Organization Administrator Have?
- How to Submit Data Requests
- Newsletters | Help Center
- How do I copy, delete, or turn a newsletter into a template?
- What Permissions Does the Channel Administrator Have?
- What Permissions Does the Content Contributor Have?
- How to Remove Letterhead Branding from Your Newsletter Footer
- Page not found | Help Center
- What's the Difference Between "Hide from Archive" and Public Newsletters?
- Why am I receiving DMARC Reports
- How to Clear Cache and Cookies
- Tracking & UTM codes in Letterhead
- Can images be imported for each item/row into the newsletter from an RSS feed?
- When are welcome letters triggered?
- What Emojis Does Letterhead Support?
- Page not found | Help Center
- Why does my antivirus give me a warning when I click on the links on the news page?
- Why Can’t I Include Attachments in My Newsletter?
- What Happens If a Global Ad Was Scheduled but No Newsletter Was Sent?
- As a subscriber, can I submit an article through Letterhead?
- Why can't I upload an image to the image block?
- Can I Edit a Published Newsletter?
- Company-Level Features | Help Center
- What Do Letterhead Statuses Mean?
- Get Started | Help Center
- Support & New Feature Requests | Help Center
- Reporting | Help Center
- Automations | Help Center
- APIs & Webhooks | Help Center
- What is the Evvnt Block?
- How to Use the Letterhead WordPress Plugin
- Create newsletters in Letterhead while sending through Iterable or Mailchimp
- Automated List Optimization
- Smart Engagement-Based Segments
- Adding Custom UTM Codes to Your Newsletter
- How to change or add an image in a newsletter?
- FAQ | Help Center
- How do I curate using a URL?