Sends Per Reach
Also known as: Share Rate, SPR, Instagram Send Signal
Updated Jun 1, 2026
Sends per reach (SPR) is the ratio of DM forwards a post receives to the number of unique accounts that saw it. If 10,000 people saw your Reel and 200 of them tapped the paper-plane icon and sent it to a friend, your SPR is 2%. Adam Mosseri confirmed in a January 2025 ranking-signals video, then again in a May 2025 follow-up he framed as a "paradigm shift," that SPR is one of three top-weighted Reels signals alongside watch time and likes per reach.
Mechanically, a send is the strongest possible vote a viewer can cast: they are putting their social reputation on the line by recommending your content to someone they actually know. Instagram's ranking model treats this as a higher-confidence quality signal than a like (cheap), a comment (often hostile or generic), or even a save (private, no social risk). Industry analysis from Influencer Marketing Hub and Buffer pegs sends as roughly 3-5x more valuable than likes for distribution to non-followers — which is why SPR matters far more on the Explore page than in the in-feed surface.
Why it matters for creators
Designing for SPR changes what you write on screen and in captions. "Tag a friend who needs this" is the dumb version. The smart version is making content that earns a send without asking: an insight specific enough that the viewer thinks of one named person who would benefit, a screenshotable list, a piece of validation ("send this to the friend who keeps saying X"), or a niche-coded joke that signals in-group membership.
What creators get wrong
- Confusing shares with sends. A share-to-Story is not a send. Only direct-DM forwards count toward SPR.
- Optimizing the wrong half of the ratio. SPR is sends ÷ reach. Posts with low reach but a few engaged sends often outperform posts with high reach and shallow engagement — the algorithm extrapolates from rate, not absolute count.
- Ignoring DM-side conversion. If your Reel earns sends, you can capture that intent with a comment-to-DM funnel instead of letting it leak to the link-in-bio.
For a deeper teardown of the metric, see our breakdown of Instagram's sends-per-reach playbook.
Example
Example. A nutrition creator posts a Reel listing "5 cheap protein sources Indian gym-goers ignore." Of 80,000 viewers, 2,400 send it via DM — an SPR of 3%. The Reel pushes onto Explore within 36 hours and crosses 600,000 views, dwarfing her usual 50,000-view ceiling. A second Reel that week with the same watch time but no list format earns 0.4% SPR and stalls at 45,000. The only variable that moved was send-worthiness: lists are screenshot-and-forward fuel.
Related terms
Metrics
Reach
The number of unique accounts that saw a post. Distinct from impressions — one account viewing a post five times counts as 1 reach, 5 impressions.
Algorithm
Watch Time
Total seconds an account spent watching a Reel, summed across the audience. Instagram's second-most weighted ranking signal in 2026 after sends per reach.
Metrics
Engagement Rate
The percentage of viewers who interacted with a post — likes, comments, saves, shares — divided by reach (or follower count, depending on formula).
Algorithm
Explore Page
Instagram's algorithmic discovery surface — the magnifying-glass tab — that serves content based on inferred interest, not follow graph. The primary growth engine for accounts under 100K followers.
Read more
Growth
Instagram's "Sends Per Reach" Algorithm — How to Design Content for the 2026 Ranking Signal
Mosseri confirmed sends-per-reach is now weighted heavier than likes or comments. Here's the technical breakdown — and seven content patterns engineered to trigger DM shares.
Growth
The Instagram Algorithm in 2026 — What Changed and How to Adapt
Adam Mosseri's three confirmed ranking signals for 2026 (watch time, sends-per-reach, likes-per-reach), the repost crackdown, and what to actually post if you want non-follower reach.