diff --git a/source/includes/rest/_accounts.md b/source/includes/rest/_accounts.md
index f003402a401..ede4a4ad767 100644
--- a/source/includes/rest/_accounts.md
+++ b/source/includes/rest/_accounts.md
@@ -84,6 +84,14 @@
       <td><code>href</code></td>
       <td>The url designated for retrieving the account record via the REST API.</td>
     </tr>
+    <tr>
+      <td><code>default_email_address_id</code></td>
+      <td>A read-only id of the account's default From address in <code>sending_addresses</code>. Returns <code>null</code> if the account has no default From address or its default address has been deleted. Only returned when <a href="#fetch-an-account">fetching an account</a>.</td>
+    </tr>
+    <tr>
+      <td><code>sending_addresses</code></td>
+      <td>A read-only list of the account's email addresses, including unverified ones. Only returned when <a href="#fetch-an-account">fetching an account</a>. Refer to <a href="#sending-addresses">Sending addresses</a> for an overview of the properties returned here.</td>
+    </tr>
     <tr>
       <td><code>links</code></td>
       <td>An object containing URLs for campaign and conversion resources. Note, conversions are represented as "Goals".</td>
@@ -191,13 +199,84 @@ client.fetchAccount(accountId)
 > The response looks like this:
 
 ```json
-# The accounts property is an array of one account object.
+# The accounts property is an array of one account object,
+# which also includes the account's sending addresses.
 {
   "links": { ... },
-  "accounts": [{ ... }]
+  "accounts": [{
+    "id": "9999999",
+    "name": "Acme, Inc.",
+    ...
+    "default_email_address_id": "1234567",
+    "sending_addresses": [
+      {
+        "id": "1234569",
+        "email": "support@acme.com",
+        "is_default": false,
+        "verified": true,
+        "auto_generated": false
+      },
+      {
+        "id": "1234568",
+        "email": "news@acme.com",
+        "is_default": false,
+        "verified": true,
+        "auto_generated": false
+      },
+      {
+        "id": "1234567",
+        "email": "john@acme.com",
+        "is_default": true,
+        "verified": true,
+        "auto_generated": false
+      }
+    ]
+  }]
 }
 ```
 
+### Sending addresses
+
+Fetching a single account also returns the account's email addresses, newest first. Only those
+with `verified: true` can be used as a From address. Deleted addresses are not included. Listing
+accounts does not return them.
+
+<table>
+  <thead>
+    <tr>
+      <th>Property</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>id</code></td>
+      <td>A read-only Drip generated id used to identify the address.</td>
+    </tr>
+    <tr>
+      <td><code>email</code></td>
+      <td>The email address.</td>
+    </tr>
+    <tr>
+      <td><code>is_default</code></td>
+      <td>Returns true for the account's default From address, which emails without their own From address are sent from.</td>
+    </tr>
+    <tr>
+      <td><code>verified</code></td>
+      <td>Returns true if Drip can send from this address: it is on a sending domain you have authenticated in Drip, or it is an address Drip generated for the account. Unverified addresses are listed, but cannot be used as a From address until their domain is authenticated.</td>
+    </tr>
+    <tr>
+      <td><code>auto_generated</code></td>
+      <td>Returns true for the no-reply address Drip creates for new accounts.</td>
+    </tr>
+  </tbody>
+</table>
+
+`default_email_address_id` is `null` when the account has no default From address, or when
+its default address has been deleted. A `null` value does not mean emails have no From
+address: `default_from_email` still shows the address emails without their own From address
+are sent from.
+
 ### HTTP Endpoint
 
 `GET /v2/accounts/:account_id`
diff --git a/source/includes/rest/_campaigns.md b/source/includes/rest/_campaigns.md
index d1d82202491..b5d2695fa02 100644
--- a/source/includes/rest/_campaigns.md
+++ b/source/includes/rest/_campaigns.md
@@ -9,6 +9,7 @@
   "name": "SEO Email Course",
   "from_name": "John Doe",
   "from_email": "john@example.com",
+  "reply_to": "support@example.com",
   "postal_address": "123 Anywhere St\nFresno, CA 99999",
   "minutes_from_midnight": 440,
   "localize_sending_time": true,
@@ -75,6 +76,10 @@
       <td><code>from_email</code></td>
       <td>A "from email" that appears in your sent emails. This setting overrides the account's default from email.</td>
     </tr>
+    <tr>
+      <td><code>reply_to</code></td>
+      <td>The Reply-To address set on the Email Series Campaign, or <code>null</code> if none is set. When it is <code>null</code>, replies go to the From address.</td>
+    </tr>
     <tr>
       <td><code>postal_address</code></td>
       <td>As required by the <a href="http://1.usa.gov/YgrzFP" target="_blank">CAN-SPAM Act</a>, this is a postal address used for all sent emails.</td>