diff --git a/api/icsneo/icsneo.cpp b/api/icsneo/icsneo.cpp
index d4413c2..e133da4 100644
--- a/api/icsneo/icsneo.cpp
+++ b/api/icsneo/icsneo.cpp
@@ -38,7 +38,7 @@ ICSNEO_API icsneo_error_t icsneo_get_error_code(icsneo_error_t error_code, const
         return icsneo_error_invalid_parameters;
     }
 
-    std::string error;
+    std::string error("Unknown");
     switch (error_code) {
         case icsneo_error_success:
             error = "Success";
@@ -64,6 +64,9 @@ ICSNEO_API icsneo_error_t icsneo_get_error_code(icsneo_error_t error_code, const
         case icsneo_error_set_settings_failure:
             error = "Setting settings failed";
             break;
+        case icsneo_error_transmit_messages_failed:
+            error = "Transmitting messages failed";
+            break;
         // Don't default, let the compiler warn us if we forget to handle an error code
     }
     // Find the minimum length of the error string and set value_length
@@ -391,6 +394,26 @@ ICSNEO_API icsneo_error_t icsneo_device_get_messages(icsneo_device_t* device, ic
     return icsneo_error_success;
 }
 
+ICSNEO_API icsneo_error_t icsneo_device_transmit_messages(icsneo_device_t* device, icsneo_message_t** messages, uint32_t* messages_count) {
+    if (!device || !messages || !messages_count) {
+        return icsneo_error_invalid_parameters;
+    }
+    // TODO: Check if device is valid
+    auto dev = device->device;
+    uint32_t i = 0;
+    bool success = false;
+    for (;i < *messages_count; i++) {
+        // TODO: Check if message is valid
+        success = dev->transmit(std::static_pointer_cast<icsneo::BusMessage>(messages[i]->message));
+        if (!success) {
+            break;
+        }
+    }
+    *messages_count = i;
+
+    return success ? icsneo_error_success : icsneo_error_transmit_messages_failed;
+}
+
 ICSNEO_API icsneo_error_t icsneo_message_is_valid(icsneo_device_t* device, icsneo_message_t* message, bool* is_valid) {
     if (!device || !message || !is_valid) {
         return icsneo_error_invalid_parameters;
diff --git a/include/icsneo/icsneo.h b/include/icsneo/icsneo.h
index 26769e4..e2dc7d8 100644
--- a/include/icsneo/icsneo.h
+++ b/include/icsneo/icsneo.h
@@ -85,7 +85,9 @@ typedef enum _icsneo_error_t {
     // Generic RTC error code
     icsneo_error_rtc_failure,
     // Error setting settings
-    icsneo_error_set_settings_failure
+    icsneo_error_set_settings_failure,
+    // Failed to transmit messages
+    icsneo_error_transmit_messages_failed,
 } _icsneo_error_t;
 
 /** @brief Integer representation of _icsneo_error_t enum. 
@@ -306,6 +308,17 @@ ICSNEO_API icsneo_error_t icsneo_device_get_timestamp_resolution(icsneo_device_t
  */
 ICSNEO_API icsneo_error_t icsneo_device_get_messages(icsneo_device_t* device, icsneo_message_t** messages, uint32_t* messages_count, uint32_t timeout_ms);
 
+/** @brief Transmit messages from a device
+ * 
+ * @param[in] icsneo_device_t device The device to get the messages of.
+ * @param[out] icsneo_message_t** messages Pointer to an array of icsneo_message_t to copy the messages into.
+ *  Undefined behaviour if index is out of range of messages_count.
+ * @param[in,out] uint32_t* messages_count Size of the messages array. Modified with the number of messages actually transmitted.
+ * 
+ * @return icsneo_error_t icsneo_error_success if successful, icsneo_error_invalid_parameters or icsneo_error_transmission_failed otherwise.
+ */
+ICSNEO_API icsneo_error_t icsneo_device_transmit_messages(icsneo_device_t* device, icsneo_message_t** messages, uint32_t* messages_count);
+
 /** @brief Check if a message is valid
  * 
  * @param[in] icsneo_device_t* device The device to check against.