diff --git a/packages/api-gateway/src/Controller/v1/SharedVaultInvitesController.ts b/packages/api-gateway/src/Controller/v1/SharedVaultInvitesController.ts
index 393797bd1..debbc658f 100644
--- a/packages/api-gateway/src/Controller/v1/SharedVaultInvitesController.ts
+++ b/packages/api-gateway/src/Controller/v1/SharedVaultInvitesController.ts
@@ -83,6 +83,16 @@ export class SharedVaultInvitesController extends BaseHttpController {
     )
   }
 
+  @httpDelete('/invites/outbound')
+  async deleteOutboundUserInvites(request: Request, response: Response): Promise<void> {
+    await this.httpService.callSyncingServer(
+      request,
+      response,
+      this.endpointResolver.resolveEndpointOrMethodIdentifier('DELETE', 'shared-vaults/invites/outbound'),
+      request.body,
+    )
+  }
+
   @httpGet('/invites/outbound')
   async getOutboundUserInvites(request: Request, response: Response): Promise<void> {
     await this.httpService.callSyncingServer(
diff --git a/packages/api-gateway/src/Service/Resolver/EndpointResolver.ts b/packages/api-gateway/src/Service/Resolver/EndpointResolver.ts
index a32475873..6c4bc38e1 100644
--- a/packages/api-gateway/src/Service/Resolver/EndpointResolver.ts
+++ b/packages/api-gateway/src/Service/Resolver/EndpointResolver.ts
@@ -79,6 +79,7 @@ export class EndpointResolver implements EndpointResolverInterface {
     ['[POST]:shared-vaults/:sharedVaultUuid/invites/:inviteUuid/accept', 'sync.shared-vault-invites.accept'],
     ['[POST]:shared-vaults/:sharedVaultUuid/invites/:inviteUuid/decline', 'sync.shared-vault-invites.decline'],
     ['[DELETE]:shared-vaults/invites/inbound', 'sync.shared-vault-invites.delete-inbound'],
+    ['[DELETE]:shared-vaults/invites/outbound', 'sync.shared-vault-invites.delete-outbound'],
     ['[GET]:shared-vaults/invites/outbound', 'sync.shared-vault-invites.get-outbound'],
     ['[GET]:shared-vaults/invites', 'sync.shared-vault-invites.get-user-invites'],
     ['[GET]:shared-vaults/:sharedVaultUuid/invites', 'sync.shared-vault-invites.get-vault-invites'],
diff --git a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.spec.ts b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.spec.ts
index 0b7499cb8..7ee89dd10 100644
--- a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.spec.ts
+++ b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.spec.ts
@@ -24,6 +24,7 @@ describe('DeleteSharedVaultInvitesSentByUser', () => {
 
     sharedVaultInviteRepository = {} as jest.Mocked<SharedVaultInviteRepositoryInterface>
     sharedVaultInviteRepository.findBySenderUuidAndSharedVaultUuid = jest.fn().mockReturnValue([sharedVaultInvite])
+    sharedVaultInviteRepository.findBySenderUuid = jest.fn().mockReturnValue([sharedVaultInvite])
 
     declineInviteToSharedVault = {} as jest.Mocked<DeclineInviteToSharedVault>
     declineInviteToSharedVault.execute = jest.fn().mockReturnValue(Result.ok())
@@ -75,4 +76,15 @@ describe('DeleteSharedVaultInvitesSentByUser', () => {
 
     expect(result.isFailed()).toBeTruthy()
   })
+
+  it('should decline all invites by user to all shared vaults', async () => {
+    const useCase = createUseCase()
+
+    const result = await useCase.execute({
+      userUuid: '00000000-0000-0000-0000-000000000000',
+    })
+
+    expect(result.isFailed()).toBeFalsy()
+    expect(declineInviteToSharedVault.execute).toHaveBeenCalled()
+  })
 })
diff --git a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.ts b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.ts
index 795124407..8964d6e78 100644
--- a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.ts
+++ b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUser.ts
@@ -16,16 +16,22 @@ export class DeleteSharedVaultInvitesSentByUser implements UseCaseInterface<void
     }
     const userUuid = userUuidOrError.getValue()
 
-    const sharedVaultUuidOrError = Uuid.create(dto.sharedVaultUuid)
-    if (sharedVaultUuidOrError.isFailed()) {
-      return Result.fail(sharedVaultUuidOrError.getError())
+    let inboundInvites = []
+    if (dto.sharedVaultUuid !== undefined) {
+      const sharedVaultUuidOrError = Uuid.create(dto.sharedVaultUuid)
+      if (sharedVaultUuidOrError.isFailed()) {
+        return Result.fail(sharedVaultUuidOrError.getError())
+      }
+      const sharedVaultUuid = sharedVaultUuidOrError.getValue()
+
+      inboundInvites = await this.sharedVaultInviteRepository.findBySenderUuidAndSharedVaultUuid({
+        senderUuid: userUuid,
+        sharedVaultUuid,
+      })
+    } else {
+      inboundInvites = await this.sharedVaultInviteRepository.findBySenderUuid(userUuid)
     }
-    const sharedVaultUuid = sharedVaultUuidOrError.getValue()
 
-    const inboundInvites = await this.sharedVaultInviteRepository.findBySenderUuidAndSharedVaultUuid({
-      senderUuid: userUuid,
-      sharedVaultUuid,
-    })
     for (const invite of inboundInvites) {
       const result = await this.declineInviteToSharedVault.execute({
         inviteUuid: invite.id.toString(),
diff --git a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUserDTO.ts b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUserDTO.ts
index f8c1b61b4..0486bbaab 100644
--- a/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUserDTO.ts
+++ b/packages/syncing-server/src/Domain/UseCase/SharedVaults/DeleteSharedVaultInvitesSentByUser/DeleteSharedVaultInvitesSentByUserDTO.ts
@@ -1,4 +1,4 @@
 export interface DeleteSharedVaultInvitesSentByUserDTO {
   userUuid: string
-  sharedVaultUuid: string
+  sharedVaultUuid?: string
 }
diff --git a/packages/syncing-server/src/Infra/InversifyExpressUtils/HomeServer/HomeServerSharedVaultInvitesController.ts b/packages/syncing-server/src/Infra/InversifyExpressUtils/HomeServer/HomeServerSharedVaultInvitesController.ts
index fa02deed2..faf80311f 100644
--- a/packages/syncing-server/src/Infra/InversifyExpressUtils/HomeServer/HomeServerSharedVaultInvitesController.ts
+++ b/packages/syncing-server/src/Infra/InversifyExpressUtils/HomeServer/HomeServerSharedVaultInvitesController.ts
@@ -38,6 +38,10 @@ export class HomeServerSharedVaultInvitesController extends BaseHttpController {
         'sync.shared-vault-invites.delete-inbound',
         this.deleteInboundUserInvites.bind(this),
       )
+      this.controllerContainer.register(
+        'sync.shared-vault-invites.delete-outbound',
+        this.deleteOutboundUserInvites.bind(this),
+      )
       this.controllerContainer.register(
         'sync.shared-vault-invites.get-outbound',
         this.getOutboundUserInvites.bind(this),
@@ -172,6 +176,27 @@ export class HomeServerSharedVaultInvitesController extends BaseHttpController {
     })
   }
 
+  async deleteOutboundUserInvites(_request: Request, response: Response): Promise<results.JsonResult> {
+    const result = await this.deleteSharedVaultInvitesSentByUserUseCase.execute({
+      userUuid: response.locals.user.uuid,
+    })
+
+    if (result.isFailed()) {
+      return this.json(
+        {
+          error: {
+            message: result.getError(),
+          },
+        },
+        HttpStatusCode.BadRequest,
+      )
+    }
+
+    return this.json({
+      success: true,
+    })
+  }
+
   async getOutboundUserInvites(_request: Request, response: Response): Promise<results.JsonResult> {
     const result = await this.getSharedVaultInvitesSentByUserUseCase.execute({
       senderUuid: response.locals.user.uuid,
diff --git a/packages/syncing-server/src/Infra/InversifyExpressUtils/InversifyExpressSharedVaultInvitesController.ts b/packages/syncing-server/src/Infra/InversifyExpressUtils/InversifyExpressSharedVaultInvitesController.ts
index 5cf669028..8fc7fc805 100644
--- a/packages/syncing-server/src/Infra/InversifyExpressUtils/InversifyExpressSharedVaultInvitesController.ts
+++ b/packages/syncing-server/src/Infra/InversifyExpressUtils/InversifyExpressSharedVaultInvitesController.ts
@@ -72,6 +72,11 @@ export class InversifyExpressSharedVaultInvitesController extends HomeServerShar
     return super.deleteInboundUserInvites(request, response)
   }
 
+  @httpDelete('/invites/outbound')
+  override async deleteOutboundUserInvites(request: Request, response: Response): Promise<results.JsonResult> {
+    return super.deleteOutboundUserInvites(request, response)
+  }
+
   @httpGet('/invites/outbound')
   override async getOutboundUserInvites(request: Request, response: Response): Promise<results.JsonResult> {
     return super.getOutboundUserInvites(request, response)
diff --git a/packages/syncing-server/src/Mapping/Http/MessageHttpMapper.ts b/packages/syncing-server/src/Mapping/Http/MessageHttpMapper.ts
index 21f32c0ef..4b1d7e283 100644
--- a/packages/syncing-server/src/Mapping/Http/MessageHttpMapper.ts
+++ b/packages/syncing-server/src/Mapping/Http/MessageHttpMapper.ts
@@ -14,6 +14,7 @@ export class MessageHttpMapper implements MapperInterface<Message, MessageHttpRe
       recipient_uuid: domain.props.recipientUuid.value,
       sender_uuid: domain.props.senderUuid.value,
       encrypted_message: domain.props.encryptedMessage,
+      replaceability_identifier: domain.props.replaceabilityIdentifier,
       created_at_timestamp: domain.props.timestamps.createdAt,
       updated_at_timestamp: domain.props.timestamps.updatedAt,
     }
diff --git a/packages/syncing-server/src/Mapping/Http/MessageHttpRepresentation.ts b/packages/syncing-server/src/Mapping/Http/MessageHttpRepresentation.ts
index ccc2d9911..29b2b85eb 100644
--- a/packages/syncing-server/src/Mapping/Http/MessageHttpRepresentation.ts
+++ b/packages/syncing-server/src/Mapping/Http/MessageHttpRepresentation.ts
@@ -3,6 +3,7 @@ export interface MessageHttpRepresentation {
   recipient_uuid: string
   sender_uuid: string
   encrypted_message: string
+  replaceability_identifier: string | null
   created_at_timestamp: number
   updated_at_timestamp: number
 }