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Sources are the individual content providers within your blocks - each YouTube channel, RSS blog, or email sender that you add to create your digests.
Overview of different source types in Summate

Choose from Email, YouTube, or RSS block types to add sources

Email sources are managed through your Inbox - all received newsletters are automatically available as sources. YouTube and RSS sources are added directly when you create blocks in your digest.

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What are Sources?

A source is a specific content provider:
  • Email source - A particular newsletter sender (e.g., “Morning Brew”)
  • YouTube source - A specific channel (e.g., “Fireship”)
  • RSS source - A blog or website with an RSS feed (e.g., “TechCrunch”)
Each block in your digest pulls content from the sources you’ve selected for that block.

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Source Types

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Email Sources

Email newsletters from any platform - Substack, Beehiiv, ConvertKit, Mailchimp, or any email-based newsletter.
Email sources in the Inbox showing active and blocked senders

Manage approved and blocked newsletter senders in your Inbox

How to add:
  1. Set up your Summate Inbox
  2. Forward newsletters to your inbox (see our auto-forwarding guide)
  3. New senders appear in your Inbox and are automatically available as sources
  4. Add senders to Email blocks
  5. Block spam senders with one click if needed
Management:
  • Active sources - Senders available to add to blocks (default for all received newsletters)
  • Blocked sources - Spam senders you’ve blocked with one click
  • Manage senders through your Inbox

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YouTube Sources

Individual YouTube channels you want to follow.
Adding YouTube channels by importing subscriptions or pasting URLs

Import your YouTube subscriptions or add channels manually

How to add:
  1. Create a YouTube block in your digest
  2. Connect your YouTube account for one-click import of all subscriptions
  3. Or paste channel URLs directly
Management:
  • Filter out Shorts if desired
  • Videos with unavailable transcripts are automatically filtered
We plan to add more management tools for YouTube sources in the future.

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RSS Sources

Blogs, news sites, and any website with an RSS feed.
Adding RSS feeds by entering website URLs

Import Substack newsletters or add RSS feeds by URL

How to add:
  1. Create an RSS block in your digest
  2. Enter a website URL - Summate tries to auto-detect the RSS feed
  3. Or paste the RSS feed URL directly if auto-detection doesn’t work
Management:
  • Short content (less than 10 words) is automatically filtered
We plan to add more management tools for RSS sources in the future.

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Managing Email Sources

Email sources have the most management tools available for controlling what appears in your digests.

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Managing Senders

When a new newsletter arrives in your Summate Inbox, it’s automatically available as a source.
1

Review Your Inbox

Check your Inbox for newsletter senders
2

Add to Blocks

Add senders to Email blocks in your digests
3

Block Spam

If spam newsletters appear, block them with one click
Focus on quality newsletters. If low-value content makes it through your forwarding filters, block those senders immediately to keep your Inbox clean.

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Source States

  • Active - All newsletter senders received in your Inbox (default state)
  • Blocked - Spam senders you’ve blocked that won’t appear in your digests or Inbox

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Source Quality

We recommend monitoring high-quality sources only, not spam or low-value content. Quality sources lead to better digests and more efficient use of your AI credits.

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Best Practices

Start Small

Begin with 5-10 high-quality sources per block and expand gradually

Review Regularly

Check your Inbox weekly and remove inactive sources monthly

Be Selective

Block low-quality senders immediately to keep your Inbox clean

Organize by Block

Group related sources together in the same block for better organization

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Troubleshooting

If newsletters aren’t showing up, check the Inbox page for common troubleshooting patterns and setup guidance.
  • Verify the channel is actively publishing new content - Check if videos have transcripts available (videos without transcripts are filtered)
  • Verify the website still has an active RSS feed
  • Try finding and entering the RSS feed URL directly
  • Check if the website is still publishing new content

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Next Steps

Set Up Inbox

Configure your email forwarding

Create Blocks

Add sources to your blocks

Build Digests

Create your first digest