diff --git a/.eslintrc.json b/.eslintrc.json
index 9a0c1e6f3..71577cd76 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,4 +1,7 @@
 {
   "extends": ["./node_modules/@standardnotes/config/src/.eslintrc"],
+  "rules": {
+    "max-classes-per-file": ["error", 1]
+  },
   "ignorePatterns": [".eslintrc.js", "*.webpack.*.js", "webpack-defaults.js", "jest.config.js", "__mocks__", "**/**/coverage"]
 }
diff --git a/packages/ui-services/src/Route/Params/DemoParams.ts b/packages/ui-services/src/Route/Params/DemoParams.ts
new file mode 100644
index 000000000..f7d8ba72f
--- /dev/null
+++ b/packages/ui-services/src/Route/Params/DemoParams.ts
@@ -0,0 +1,3 @@
+export type DemoParams = {
+  token: string
+}
diff --git a/packages/ui-services/src/Route/Params/OnboardingParams.ts b/packages/ui-services/src/Route/Params/OnboardingParams.ts
new file mode 100644
index 000000000..dc3db6a7d
--- /dev/null
+++ b/packages/ui-services/src/Route/Params/OnboardingParams.ts
@@ -0,0 +1,3 @@
+export type OnboardingParams = {
+  fromHomepage: boolean
+}
diff --git a/packages/ui-services/src/Route/Params/PurchaseParams.ts b/packages/ui-services/src/Route/Params/PurchaseParams.ts
new file mode 100644
index 000000000..64a15a06e
--- /dev/null
+++ b/packages/ui-services/src/Route/Params/PurchaseParams.ts
@@ -0,0 +1,4 @@
+export type PurchaseParams = {
+  plan: string
+  period: string
+}
diff --git a/packages/ui-services/src/Route/Params/SettingsParams.ts b/packages/ui-services/src/Route/Params/SettingsParams.ts
new file mode 100644
index 000000000..c77a4de7b
--- /dev/null
+++ b/packages/ui-services/src/Route/Params/SettingsParams.ts
@@ -0,0 +1,5 @@
+import { PreferenceId } from '../../Preferences/PreferenceId'
+
+export type SettingsParams = {
+  panel: PreferenceId
+}
diff --git a/packages/ui-services/src/Route/Params/SubscriptionInviteParams.ts b/packages/ui-services/src/Route/Params/SubscriptionInviteParams.ts
new file mode 100644
index 000000000..979f70ea9
--- /dev/null
+++ b/packages/ui-services/src/Route/Params/SubscriptionInviteParams.ts
@@ -0,0 +1,5 @@
+import { Uuid } from '@standardnotes/common'
+
+export type SubscriptionInviteParams = {
+  inviteUuid: Uuid
+}
diff --git a/packages/ui-services/src/Route/RootQueryParam.ts b/packages/ui-services/src/Route/RootQueryParam.ts
new file mode 100644
index 000000000..1b2c054da
--- /dev/null
+++ b/packages/ui-services/src/Route/RootQueryParam.ts
@@ -0,0 +1,6 @@
+export enum RootQueryParam {
+  Purchase = 'purchase',
+  Settings = 'settings',
+  DemoToken = 'demo-token',
+  AcceptSubscriptionInvite = 'accept-subscription-invite',
+}
diff --git a/packages/ui-services/src/Route/RootRoutes.ts b/packages/ui-services/src/Route/RootRoutes.ts
new file mode 100644
index 000000000..436fd04f0
--- /dev/null
+++ b/packages/ui-services/src/Route/RootRoutes.ts
@@ -0,0 +1,4 @@
+export enum RootRoutes {
+  Onboarding = '/onboard',
+  None = '/',
+}
diff --git a/packages/ui-services/src/Route/RouteParams.ts b/packages/ui-services/src/Route/RouteParams.ts
deleted file mode 100644
index 3cf73c08b..000000000
--- a/packages/ui-services/src/Route/RouteParams.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { PreferenceId } from '../Preferences/PreferenceId'
-
-export type OnboardingParams = {
-  fromHomepage: boolean
-}
-
-export type SettingsParams = {
-  panel: PreferenceId
-}
-
-export type DemoParams = {
-  token: string
-}
-
-export type PurchaseParams = {
-  plan: string
-  period: string
-}
diff --git a/packages/ui-services/src/Route/RouteParser.spec.ts b/packages/ui-services/src/Route/RouteParser.spec.ts
index f242f586c..011d63b8d 100644
--- a/packages/ui-services/src/Route/RouteParser.spec.ts
+++ b/packages/ui-services/src/Route/RouteParser.spec.ts
@@ -48,4 +48,12 @@ describe('route parser', () => {
 
     expect(() => parser.onboardingParams).toThrowError('Accessing invalid params')
   })
+
+  it('routes to subscription sharing', () => {
+    const url = 'https://app.standardnotes.com/?accept-subscription-invite=1-2-3'
+    const parser = new RouteParser(url)
+
+    expect(parser.type).toEqual(RouteType.AcceptSubscriptionInvite)
+    expect(parser.subscriptionInviteParams.inviteUuid).toEqual('1-2-3')
+  })
 })
diff --git a/packages/ui-services/src/Route/RouteParser.ts b/packages/ui-services/src/Route/RouteParser.ts
index 09ecfe741..d33ea2c53 100644
--- a/packages/ui-services/src/Route/RouteParser.ts
+++ b/packages/ui-services/src/Route/RouteParser.ts
@@ -1,19 +1,17 @@
+import { Uuid } from '@standardnotes/common'
 import { PreferenceId } from './../Preferences/PreferenceId'
-import { DemoParams, OnboardingParams, PurchaseParams, SettingsParams } from './RouteParams'
+import { DemoParams } from './Params/DemoParams'
+import { OnboardingParams } from './Params/OnboardingParams'
+import { PurchaseParams } from './Params/PurchaseParams'
+import { SettingsParams } from './Params/SettingsParams'
+import { SubscriptionInviteParams } from './Params/SubscriptionInviteParams'
+
+import { RootQueryParam } from './RootQueryParam'
+import { RootRoutes } from './RootRoutes'
+import { RouteParserInterface } from './RouteParserInterface'
 import { RouteType } from './RouteType'
 
-enum RootRoutes {
-  Onboarding = '/onboard',
-  None = '/',
-}
-
-enum RootQueryParam {
-  Purchase = 'purchase',
-  Settings = 'settings',
-  DemoToken = 'demo-token',
-}
-
-export class RouteParser {
+export class RouteParser implements RouteParserInterface {
   private url: URL
   private readonly path: string
   public readonly type: RouteType
@@ -23,32 +21,19 @@ export class RouteParser {
     this.url = new URL(url)
     this.path = this.url.pathname
     this.searchParams = this.url.searchParams
+    this.type = this.parseTypeFromQueryParameters()
+  }
 
-    const pathUsesRootQueryParams = this.path === RootRoutes.None
+  get subscriptionInviteParams(): SubscriptionInviteParams {
+    this.checkForProperRouteType(RouteType.AcceptSubscriptionInvite)
 
-    if (pathUsesRootQueryParams) {
-      if (this.searchParams.has(RootQueryParam.Purchase)) {
-        this.type = RouteType.Purchase
-      } else if (this.searchParams.has(RootQueryParam.Settings)) {
-        this.type = RouteType.Settings
-      } else if (this.searchParams.has(RootQueryParam.DemoToken)) {
-        this.type = RouteType.Demo
-      } else {
-        this.type = RouteType.None
-      }
-    } else {
-      if (this.path === RootRoutes.Onboarding) {
-        this.type = RouteType.Onboarding
-      } else {
-        this.type = RouteType.None
-      }
+    return {
+      inviteUuid: this.searchParams.get(RootQueryParam.AcceptSubscriptionInvite) as Uuid,
     }
   }
 
   get demoParams(): DemoParams {
-    if (this.type !== RouteType.Demo) {
-      throw new Error('Accessing invalid params')
-    }
+    this.checkForProperRouteType(RouteType.Demo)
 
     return {
       token: this.searchParams.get(RootQueryParam.DemoToken) as string,
@@ -56,9 +41,7 @@ export class RouteParser {
   }
 
   get settingsParams(): SettingsParams {
-    if (this.type !== RouteType.Settings) {
-      throw new Error('Accessing invalid params')
-    }
+    this.checkForProperRouteType(RouteType.Settings)
 
     return {
       panel: this.searchParams.get(RootQueryParam.Settings) as PreferenceId,
@@ -66,9 +49,7 @@ export class RouteParser {
   }
 
   get purchaseParams(): PurchaseParams {
-    if (this.type !== RouteType.Purchase) {
-      throw new Error('Accessing invalid params')
-    }
+    this.checkForProperRouteType(RouteType.Purchase)
 
     return {
       plan: this.searchParams.get('plan') as string,
@@ -77,12 +58,41 @@ export class RouteParser {
   }
 
   get onboardingParams(): OnboardingParams {
-    if (this.type !== RouteType.Onboarding) {
-      throw new Error('Accessing invalid params')
-    }
+    this.checkForProperRouteType(RouteType.Onboarding)
 
     return {
       fromHomepage: !!this.searchParams.get('from_homepage'),
     }
   }
+
+  private checkForProperRouteType(type: RouteType): void {
+    if (this.type !== type) {
+      throw new Error('Accessing invalid params')
+    }
+  }
+
+  private parseTypeFromQueryParameters(): RouteType {
+    if (this.path === RootRoutes.Onboarding) {
+      return RouteType.Onboarding
+    }
+
+    if (this.path !== RootRoutes.None) {
+      return RouteType.None
+    }
+
+    const rootQueryParametersMap: Map<RootQueryParam, RouteType> = new Map([
+      [RootQueryParam.Purchase, RouteType.Purchase],
+      [RootQueryParam.Settings, RouteType.Settings],
+      [RootQueryParam.DemoToken, RouteType.Demo],
+      [RootQueryParam.AcceptSubscriptionInvite, RouteType.AcceptSubscriptionInvite],
+    ])
+
+    for (const rootQueryParam of rootQueryParametersMap.keys()) {
+      if (this.searchParams.has(rootQueryParam)) {
+        return rootQueryParametersMap.get(rootQueryParam) as RouteType
+      }
+    }
+
+    return RouteType.None
+  }
 }
diff --git a/packages/ui-services/src/Route/RouteParserInterface.ts b/packages/ui-services/src/Route/RouteParserInterface.ts
new file mode 100644
index 000000000..adf2e21fa
--- /dev/null
+++ b/packages/ui-services/src/Route/RouteParserInterface.ts
@@ -0,0 +1,13 @@
+import { DemoParams } from './Params/DemoParams'
+import { OnboardingParams } from './Params/OnboardingParams'
+import { PurchaseParams } from './Params/PurchaseParams'
+import { SettingsParams } from './Params/SettingsParams'
+import { SubscriptionInviteParams } from './Params/SubscriptionInviteParams'
+
+export interface RouteParserInterface {
+  get demoParams(): DemoParams
+  get settingsParams(): SettingsParams
+  get purchaseParams(): PurchaseParams
+  get onboardingParams(): OnboardingParams
+  get subscriptionInviteParams(): SubscriptionInviteParams
+}
diff --git a/packages/ui-services/src/Route/RouteService.ts b/packages/ui-services/src/Route/RouteService.ts
index e71a1ce2e..c91965584 100644
--- a/packages/ui-services/src/Route/RouteService.ts
+++ b/packages/ui-services/src/Route/RouteService.ts
@@ -5,9 +5,10 @@ import {
   InternalEventBusInterface,
 } from '@standardnotes/services'
 import { RouteParser } from './RouteParser'
+import { RouteParserInterface } from './RouteParserInterface'
 import { RouteServiceEvent } from './RouteServiceEvent'
 
-export class RouteService extends AbstractService<RouteServiceEvent, RouteParser> {
+export class RouteService extends AbstractService<RouteServiceEvent, RouteParserInterface> {
   private unsubApp!: () => void
 
   constructor(
@@ -24,7 +25,7 @@ export class RouteService extends AbstractService<RouteServiceEvent, RouteParser
     this.unsubApp()
   }
 
-  public getRoute(): RouteParser {
+  public getRoute(): RouteParserInterface {
     return new RouteParser(window.location.href)
   }
 
diff --git a/packages/ui-services/src/Route/RouteType.ts b/packages/ui-services/src/Route/RouteType.ts
index 0de59b6af..ec59751c3 100644
--- a/packages/ui-services/src/Route/RouteType.ts
+++ b/packages/ui-services/src/Route/RouteType.ts
@@ -2,6 +2,7 @@ export enum RouteType {
   Onboarding = 'onboarding',
   Settings = 'settings',
   Purchase = 'purchase',
+  AcceptSubscriptionInvite = 'accept-subscription-invite',
   Demo = 'demo',
   None = 'none',
 }
diff --git a/packages/ui-services/src/index.ts b/packages/ui-services/src/index.ts
index 87157f2dc..974ef60f3 100644
--- a/packages/ui-services/src/index.ts
+++ b/packages/ui-services/src/index.ts
@@ -3,7 +3,11 @@ export * from './Alert/WebAlertService'
 export * from './Archive/ArchiveManager'
 export * from './IO/IOService'
 export * from './Preferences/PreferenceId'
-export * from './Route/RouteParams'
+export * from './Route/Params/DemoParams'
+export * from './Route/Params/OnboardingParams'
+export * from './Route/Params/PurchaseParams'
+export * from './Route/Params/SettingsParams'
+export * from './Route/Params/SubscriptionInviteParams'
 export * from './Route/RouteParser'
 export * from './Route/RouteType'
 export * from './Route/RouteService'