Brand Observatory / Tech & Science
Independently observed by Siftbox's subscriber panel ยท 34 issues analyzed tldrnewsletter.com
Siftbox Score 4/12 Volume-first Q3 2026 Inbox Index provisionalThe subjects TLDR returned to most across the issues our panel received, counted by how many issues covered each one.
Measured from the unsubscribe route in the mail itself, not from what happens after you use it. Every TLDR message our panel received was checked.
Every message carries a one-click unsubscribe your mail app can action for you, no website visit and no sign-in. Across the 36 emails the panel has received.
Subscribe with your Siftbox address: the issues arrive untouched, while promos, course launches, and survey requests are held for whenever you feel like looking.
Looking to sign up to TLDR with your Siftbox address? Their site is at tldrnewsletter.com.
Siftbox operates its own panel of subscriber inboxes that sign up for newsletters the same way any reader would. Every issue received is analyzed and checked against what the publication actually sends over time. No individual inbox is ever exposed โ data comes from Siftbox's own panel of subscriber inboxes, including mail archives contributed by the founders, blended with anonymized aggregates from Siftbox traffic once many subscribers have received the same campaign. Figures refresh as new email arrives and the site is rebuilt.