diff --git a/Cargo.lock b/Cargo.lock
index 06106f68..16d066c4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -493,7 +493,7 @@ dependencies = [
  "num-integer",
  "num-traits 0.2.15",
  "serde 1.0.137",
- "time 0.1.44",
+ "time 0.1.43",
  "winapi 0.3.9",
 ]
 
@@ -619,7 +619,7 @@ dependencies = [
  "percent-encoding 2.1.0",
  "rand 0.8.5",
  "sha2",
- "time 0.1.44",
+ "time 0.1.43",
 ]
 
 [[package]]
@@ -628,7 +628,7 @@ version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "888604f00b3db336d2af898ec3c1d5d0ddf5e6d462220f2ededc33a87ac4bbd5"
 dependencies = [
- "time 0.1.44",
+ "time 0.1.43",
  "url 1.7.2",
 ]
 
@@ -645,7 +645,7 @@ dependencies = [
  "publicsuffix",
  "serde 1.0.137",
  "serde_json",
- "time 0.1.44",
+ "time 0.1.43",
  "try_from",
  "url 1.7.2",
 ]
@@ -1129,7 +1129,7 @@ dependencies = [
  "encoding",
  "lazy_static",
  "rand 0.4.6",
- "time 0.1.44",
+ "time 0.1.43",
  "version_check 0.1.5",
 ]
 
@@ -1281,6 +1281,19 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "flume"
+version = "0.10.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843c03199d0c0ca54bc1ea90ac0d507274c28abcc4f691ae8b4eaa375087c76a"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "nanorand",
+ "pin-project",
+ "spin",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -1507,8 +1520,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9be70c98951c83b8d2f8f60d7065fa6d5146873094452a1008da8c2f1e4205ad"
 dependencies = [
  "cfg-if 1.0.0",
+ "js-sys",
  "libc",
- "wasi 0.10.0+wasi-snapshot-preview1",
+ "wasi 0.10.2+wasi-snapshot-preview1",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -1845,7 +1860,7 @@ dependencies = [
  "log 0.3.9",
  "mime 0.2.6",
  "num_cpus",
- "time 0.1.44",
+ "time 0.1.43",
  "traitobject",
  "typeable",
  "unicase 1.4.2",
@@ -1870,7 +1885,7 @@ dependencies = [
  "log 0.4.17",
  "net2",
  "rustc_version",
- "time 0.1.44",
+ "time 0.1.43",
  "tokio 0.1.22",
  "tokio-buf",
  "tokio-executor",
@@ -2205,7 +2220,7 @@ dependencies = [
  "email",
  "lettre",
  "mime 0.3.16",
- "time 0.1.44",
+ "time 0.1.43",
  "uuid 0.7.4",
 ]
 
@@ -2653,6 +2668,15 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "nanorand"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a51313c5820b0b02bd422f4b44776fbf47961755c74ce64afc73bfad10226c3"
+dependencies = [
+ "getrandom 0.2.6",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.2.10"
@@ -3240,6 +3264,8 @@ dependencies = [
  "assert-json-diff",
  "base64 0.13.0",
  "chrono",
+ "flume",
+ "futures 0.3.21",
  "heck",
  "hex",
  "once_cell",
@@ -3798,7 +3824,7 @@ dependencies = [
  "serde 1.0.137",
  "serde_json",
  "serde_urlencoded 0.5.5",
- "time 0.1.44",
+ "time 0.1.43",
  "tokio 0.1.22",
  "tokio-executor",
  "tokio-io",
@@ -3940,7 +3966,7 @@ dependencies = [
  "rocket_codegen",
  "rocket_http",
  "state",
- "time 0.1.44",
+ "time 0.1.43",
  "toml 0.4.10",
  "version_check 0.9.4",
  "yansi",
@@ -3983,7 +4009,7 @@ dependencies = [
  "ring",
  "rocket",
  "serde 1.0.137",
- "time 0.1.44",
+ "time 0.1.43",
 ]
 
 [[package]]
@@ -3999,7 +4025,7 @@ dependencies = [
  "percent-encoding 1.0.1",
  "smallvec 1.8.0",
  "state",
- "time 0.1.44",
+ "time 0.1.43",
  "unicode-xid 0.1.0",
 ]
 
@@ -4378,6 +4404,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "spin"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c530c2b0d0bf8b69304b39fe2001993e267461948b890cd037d8ad4293fa1a0d"
+dependencies = [
+ "lock_api 0.4.7",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"
@@ -4729,12 +4764,11 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.1.44"
+version = "0.1.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
 dependencies = [
  "libc",
- "wasi 0.10.0+wasi-snapshot-preview1",
  "winapi 0.3.9",
 ]
 
@@ -5417,9 +5451,9 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
 name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
+version = "0.10.2+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
 
 [[package]]
 name = "wasi"
diff --git a/plume-common/Cargo.toml b/plume-common/Cargo.toml
index 96090759..4539dba0 100644
--- a/plume-common/Cargo.toml
+++ b/plume-common/Cargo.toml
@@ -23,7 +23,9 @@ askama_escape = "0.10.3"
 activitystreams = "0.7.0-alpha.18"
 activitystreams-ext = "0.1.0-alpha.2"
 url = "2.2.2"
+flume = "0.10.12"
 tokio = { version = "1.18.1", features = ["full"] }
+futures = "0.3.21"
 
 [dependencies.chrono]
 features = ["serde"]
diff --git a/plume-common/src/activity_pub/mod.rs b/plume-common/src/activity_pub/mod.rs
index cb86fcf4..2a076f62 100644
--- a/plume-common/src/activity_pub/mod.rs
+++ b/plume-common/src/activity_pub/mod.rs
@@ -10,7 +10,8 @@ use activitystreams::{
 };
 use activitystreams_ext::{Ext1, Ext2, UnparsedExtension};
 use array_tool::vec::Uniq;
-use reqwest::{header::HeaderValue, ClientBuilder, Url};
+use futures::future::join_all;
+use reqwest::{header::HeaderValue, ClientBuilder, RequestBuilder, Url};
 use rocket::{
     http::Status,
     request::{FromRequest, Request},
@@ -156,7 +157,29 @@ where
         .build()
         .expect("Error while initializing tokio runtime for federation");
     rt.block_on(async {
-        let (tx, mut rx) = mpsc::channel(32);
+        let capacity = 50;
+        let (tx, rx) = flume::bounded::<RequestBuilder>(capacity);
+        let mut handles = Vec::with_capacity(capacity);
+        for _ in 0..capacity {
+            let rx = rx.clone();
+            let handle = rt.spawn(async move {
+                while let Ok(request_builder) = rx.recv_async().await {
+                    let _ = request_builder
+                        .send()
+                        .await
+                        .map(move |r| {
+                            if r.status().is_success() {
+                                debug!("Successfully sent activity to inbox ({})", &r.url());
+                            } else {
+                                warn!("Error while sending to inbox ({:?})", &r)
+                            }
+                            debug!("Response: \"{:?}\"\n", r);
+                        })
+                        .map_err(|e| warn!("Error while sending to inbox ({:?})", e));
+                }
+            });
+            handles.push(handle);
+        }
         for inbox in boxes {
             let body = signed.to_string();
             let mut headers = request::headers();
@@ -182,33 +205,11 @@ where
                 request::signature(sender, &headers, ("post", url.path(), url.query()))
                     .expect("activity_pub::broadcast: request signature error"),
             );
-            let client = client.clone();
-            let tx = tx.clone();
-            let _ = tx.send(
-                rt.spawn(
-                    client
-                        .post(&inbox)
-                        .headers(headers.clone())
-                        .body(body)
-                        .send(),
-                ),
-            );
-        }
-        while let Some(request) = rx.recv().await {
-            let _ = request
-                .await
-                .map(move |r| {
-                    r.map(|r| {
-                        if r.status().is_success() {
-                            debug!("Successfully sent activity to inbox ({})", &r.url());
-                        } else {
-                            warn!("Error while sending to inbox ({} {:?})", &r.url(), &r)
-                        }
-                        debug!("Response: \"{:?}\"\n", r);
-                    })
-                })
-                .map_err(|e| warn!("Error while sending to inbox ({:?})", e));
+            let request_builder = client.post(&inbox).headers(headers.clone()).body(body);
+            tx.send_async(request_builder).await.unwrap();
         }
+        drop(tx);
+        join_all(handles).await;
     });
 }