diff --git a/lib/utils/url-utils.js b/lib/utils/url-utils.js
--- a/lib/utils/url-utils.js
+++ b/lib/utils/url-utils.js
@@ -12,6 +12,7 @@
   +settings?: 'account' | 'danger-zone',
   +threadCreation?: boolean,
   +selectedUserList?: $ReadOnlyArray<string>,
+  +inviteSecret?: string,
   ...
 };
 
@@ -33,6 +34,10 @@
   '(/|^)thread/new(/([0-9]+([+][0-9]+)*))?(/|$)',
   'i',
 );
+const inviteLinkRegex = new RegExp(
+  '(/|^)handle/invite/([a-zA-Z0-9]+)(/|$)',
+  'i',
+);
 
 function infoFromURL(url: string): URLInfo {
   const yearMatches = yearRegex.exec(url);
@@ -45,6 +50,7 @@
   const dangerZoneTest = dangerZoneRegex.test(url);
   const threadPendingMatches = threadPendingRegex.exec(url);
   const threadCreateMatches = threadCreationRegex.exec(url);
+  const inviteLinkMatches = inviteLinkRegex.exec(url);
 
   const returnObj = {};
   if (yearMatches) {
@@ -70,6 +76,9 @@
   if (verifyMatches) {
     returnObj.verify = verifyMatches[2];
   }
+  if (inviteLinkMatches) {
+    returnObj.inviteSecret = inviteLinkMatches[2];
+  }
   if (calendarTest) {
     returnObj.calendar = true;
   } else if (chatTest) {
diff --git a/web/types/nav-types.js b/web/types/nav-types.js
--- a/web/types/nav-types.js
+++ b/web/types/nav-types.js
@@ -29,6 +29,7 @@
   +settingsSection?: NavigationSettingsSection,
   +selectedUserList?: $ReadOnlyArray<string>,
   +chatMode?: NavigationChatMode,
+  +inviteSecret?: ?string,
 };
 
 export const navInfoValidator: TInterface<NavInfo> = tShape<$Exact<NavInfo>>({
@@ -40,4 +41,5 @@
   settingsSection: t.maybe(navigationSettingsSectionValidator),
   selectedUserList: t.maybe(t.list(t.String)),
   chatMode: t.maybe(navigationChatModeValidator),
+  inviteSecret: t.maybe(t.String),
 });
diff --git a/web/url-utils.js b/web/url-utils.js
--- a/web/url-utils.js
+++ b/web/url-utils.js
@@ -133,6 +133,10 @@
     newNavInfo.settingsSection = urlInfo.settings;
   }
 
+  if (urlInfo.inviteSecret) {
+    newNavInfo.inviteSecret = urlInfo.inviteSecret;
+  }
+
   return newNavInfo;
 }