Synthesis is an optional Readless Max style that organizes available newsletter, Substack, and RSS content into a thematic briefing, with source references to help you check important details.
Pro is $4.90 USD per month; Max is $9 USD per month. Billed monthly. Eligible new accounts can try Pro for 7 days. Card required for the eligible Pro trial. Cancel before it ends to avoid a charge.
Choose the newsletters, Substacks, and feeds you want to follow, then set a delivery schedule. Synthesis brings related material from those sources into a connected read. A morning briefing can focus on work, while another schedule follows a different interest.
The result depends on the content Readless receives or can access for that schedule. Source references help you follow up on a story, but AI can miss context or make mistakes. Check important details against the available originals.
This illustration shows how related material can share a section. Actual themes, source coverage, and briefing length depend on the available content.
Example source formats
A mix of newsletters, independent writers, and RSS feeds.
A short introduction can frame related stories, followed by sections that connect their reporting.
A shared story
Related reporting is discussed together, with references to the available sources.
Another theme
Separate developments can get their own section, followed by a source list.
Format illustration, not a report from the example sources.
Keep source summaries separate with Concise or Detailed, or choose optional Synthesis on Max for a thematic read.
Per-source summary
Available on Pro and Max
Synthesis briefing
Max only
A short introduction can frame a connection between the stories before you read the sections.
Related stories can share a section, while separate developments get room of their own.
References identify source material behind the briefing and help you follow up on its reporting.
Available links open a stored newsletter or publisher page. Verify important details; publisher access restrictions still apply.
Switch between the illustrative Synthesis, Detailed, and Concise samples to compare how each format reads.
Quick summaries for busy readers
Hot Topics can highlight a specific story covered by at least two distinct newsletter senders. Individual source summaries remain separate.
Illustrative sample digest, not a customer result. Your content and reading time will differ.
Choose optional Synthesis alongside the Concise and Detailed source-summary styles. Max adds custom summary instructions and up to 8 digest schedules, compared with up to 3 on Pro.
Pro is $4.90 USD per month; Max is $9 USD per month. Billed monthly. Eligible new accounts can try Pro for 7 days. Card required for the eligible Pro trial. Cancel before it ends to avoid a charge. Max upgrades use the timing and charges shown in your account's confirmation.
The common questions about how synthesis reads, writes, and cites.
AI synthesis connects related stories from multiple sources in a thematic briefing. In Readless, Synthesis is an optional Max style built from available, eligible content in your scheduled digest. It includes source references to help you check important details; it does not guarantee complete coverage or error-free reporting.
Add newsletters, Substack subscriptions, or RSS feeds to Readless, choose a delivery schedule, and select Synthesis on Max. The briefing uses content Readless receives or can access for that schedule. Choose daily delivery if it suits your sources, and review the available plan and billing terms before confirming a Max upgrade.
Concise and Detailed keep eligible source summaries separate. Pro can also show Hot Topics for a specific story covered by at least two distinct newsletter senders. Optional Max Synthesis organizes related material into a thematic narrative with source references. These formats do not guarantee that all repeated coverage disappears or that every source is included.
Synthesis can use newsletters received at your Readless address, connected Substack content, and RSS feed content. Coverage depends on what Readless receives or can access and what is eligible for the digest. It does not bypass publisher paywalls or access restrictions. If there is not enough usable material for Synthesis, the digest may use Detailed source summaries instead.
Synthesis includes source references to help you check its reporting. When a link is available, newsletter references open the stored Readless email and RSS references open the publisher's page. Stored content and publisher access restrictions still apply. References do not prove that every sentence is correct: verify important details against the available source material.
Synthesis is an optional style on Max, $9 USD per month, with custom summary instructions and up to 8 digest schedules. Pro is $4.90 USD per month, with up to 3 schedules and the Concise and Detailed styles. Both are recurring monthly subscriptions. Eligible new accounts can try Pro for 7 days. Card required for the eligible Pro trial. Cancel before it ends to avoid a charge. An eligible Pro trial can retain its remaining trial period when upgrading to Max; a paid Pro upgrade can incur an immediate prorated charge. Review the confirmation for your account's timing and charges.
Yes. Max includes Concise and Detailed alongside optional Synthesis. Choose a source-summary style for schedules where you prefer to read eligible sources separately, and Synthesis where you prefer a thematic briefing.
Choose a digest language in your schedule settings: English, French, Spanish, German, Russian, Portuguese, Simplified Chinese, Traditional Chinese, Japanese, Italian, Dutch, and Polish. Auto is also available. These are the same output options used by the other digest styles; check translated names, quotations, and important details against the source when needed.
How Readless synthesis compares to other AI briefing apps.
How Readless WorksThe full path from a crowded inbox to one clear digest.
Pricing & PlansCompare Pro and Max, and see what synthesis adds.
AI Newsletter SummarizerHow scheduled summaries work for eligible source content.
Newsletter OverwhelmTame a subscription list that grew past what you can read.
Best Newsletter Reader AppsWhere an AI briefing fits among reader apps.
Connect your sources, choose a schedule, and explore optional Synthesis on Max.
Pro is $4.90 USD per month; Max is $9 USD per month. Billed monthly. Eligible new accounts can try Pro for 7 days. Card required for the eligible Pro trial. Cancel before it ends to avoid a charge.