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Overview

Sources are the platforms and accounts that Reduce monitors for content. Each newsletter pulls content from its configured sources to generate curated digests.

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Supported Platforms

YouTube

Monitor specific channels for new video uploads

Reddit

Track subreddits for top posts

X (Twitter)

Follow accounts for recent posts

RSS

Subscribe to any RSS or Atom feed (Pro)

Podcasts

Track podcast episodes (Pro)

Email Inbox

Forward newsletters to a unique address (Pro)

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Source Limits

  • Free tier: Up to 4 X sources and 20 other sources per newsletter (YouTube, Reddit, X only)
  • Pro tier: Up to 50 X sources and 100 other sources per newsletter (all 6 platforms)

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Adding Sources

1

Navigate to Your Newsletter

Open the newsletter you want to configure and go to the Sources tab.
2

Paste a Source URL

Paste a URL for the channel, subreddit, X account, RSS feed, or podcast feed you want to add.
Examples: youtube.com/@Fireship, reddit.com/r/reactjs, x.com/karpathy
3

Confirm the Source

Reduce auto-detects the platform from the URL. Click to confirm and add it to your newsletter.

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Platform-Specific Details

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YouTube Sources

YouTube sources track new video uploads from a specific channel. How to find a channel:
  • Search by channel name (e.g., “Lex Fridman”, “ThePrimeagen”)
  • Reduce will pull recent videos from this channel for your newsletter
What content is captured:
  • Video title
  • Thumbnail
  • Upload date
  • Video URL
See YouTube platform guide for more details.

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Reddit Sources

Reddit sources monitor top posts from a subreddit. How to find a subreddit:
  • Search with or without the “r/” prefix (e.g., “reactjs” or “r/reactjs”)
  • Reduce tracks top posts from the past day/week
What content is captured:
  • Post title
  • Post text/description
  • Upvote count
  • Comment count
See Reddit platform guide for more details.

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X (Twitter) Sources

X/Twitter sources are available on both Free and Pro tiers. Free users can add up to 4 X sources; Pro users can add up to 50 X sources.
X sources follow posts from a specific account. How to find an account:
  • Search by username or handle (e.g., “elonmusk” or “@elonmusk”)
  • Reduce pulls recent posts from this account
What content is captured:
  • Post text
  • Post date
  • Engagement metrics (likes, retweets, replies)
See X/Twitter platform guide for more details.

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Removing Sources

To remove a source from your newsletter:
  1. Navigate to the Sources tab
  2. Find the source you want to remove
  3. Click the “Remove” button next to the source
Removing a source will not delete existing content that has already been delivered. It only stops monitoring future content from that source.

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Source Strategy Tips

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Diversify Your Mix

Balance different content types for richer newsletters: 
Example: "Web Development Weekly"
- 2-3 YouTube channels (video tutorials, conference talks)
- 2-3 Subreddits (community discussions, questions)
- 2-3 X accounts (quick tips, breaking news)

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Quality Over Quantity

Start with fewer high-quality sources rather than maxing out your limit. You can always add more later.
It’s better to have 5 consistently valuable sources than 10 sources with mixed quality.

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Align Sources with Your Sections

Plan your sources based on the sections you want in your newsletter:
SectionMatching Sources
”Latest Research Papers”Academic researchers on X, ArXiv subreddit
”Tutorial Videos”Educational YouTube channels
”Community Discussions”Active subreddits in your niche
”Breaking News”News-focused X accounts

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Troubleshooting

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Source Not Found

If your search doesn’t find a source:
  • Double-check the spelling
  • Try searching without special characters (@ or r/)
  • Verify the account/channel exists on the platform
  • For YouTube, make sure it’s a channel, not a video

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Source Added But No Content

If a source appears but isn’t generating content:
  • The source may not have published new content since it was added
  • Check the source’s last post/upload date on the platform
  • Wait for the next scheduled delivery to see fresh content

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Next Steps

After adding sources:
  1. Create sections - Define what content to extract with AI prompts
  2. Set your cadence - Choose delivery frequency