diff --git a/back/src/_testBuilders/emailAssertions.ts b/back/src/_testBuilders/emailAssertions.ts
index 7739095902..b07833d87c 100644
--- a/back/src/_testBuilders/emailAssertions.ts
+++ b/back/src/_testBuilders/emailAssertions.ts
@@ -137,3 +137,24 @@ export const expectNotifyBeneficiaryAndEnterpriseThatApplicationIsRejected = (
     },
   });
 };
+
+export const expectNotifyBeneficiaryAndEnterpriseThatConventionIsDeprecated = (
+  templatedEmail: TemplatedEmail,
+  recipients: string[],
+  convention: ConventionDto,
+) => {
+  expectToEqual(templatedEmail, {
+    type: "DEPRECATED_CONVENTION_NOTIFICATION",
+    recipients,
+    params: {
+      internshipKind: convention.internshipKind,
+      beneficiaryFirstName: convention.signatories.beneficiary.firstName,
+      beneficiaryLastName: convention.signatories.beneficiary.lastName,
+      businessName: convention.businessName,
+      deprecationReason: convention.statusJustification || "",
+      immersionProfession: convention.immersionAppellation.appellationLabel,
+      dateEnd: convention.dateEnd,
+      dateStart: convention.dateStart,
+    },
+  });
+};
diff --git a/back/src/adapters/primary/config/createUseCases.ts b/back/src/adapters/primary/config/createUseCases.ts
index 21d6c0e5ae..f382684bb2 100644
--- a/back/src/adapters/primary/config/createUseCases.ts
+++ b/back/src/adapters/primary/config/createUseCases.ts
@@ -25,6 +25,7 @@ import { GetConvention } from "../../../domain/convention/useCases/GetConvention
 import { ConfirmToSignatoriesThatApplicationCorrectlySubmittedRequestSignature } from "../../../domain/convention/useCases/notifications/ConfirmToSignatoriesThatApplicationCorrectlySubmittedRequestSignature";
 import { DeliverRenewedMagicLink } from "../../../domain/convention/useCases/notifications/DeliverRenewedMagicLink";
 import { NotifyAllActorsOfFinalConventionValidation } from "../../../domain/convention/useCases/notifications/NotifyAllActorsOfFinalConventionValidation";
+import { NotifyAllActorsThatConventionIsDeprecated } from "../../../domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated";
 import { NotifyBeneficiaryAndEnterpriseThatApplicationIsRejected } from "../../../domain/convention/useCases/notifications/NotifyBeneficiaryAndEnterpriseThatApplicationIsRejected";
 import { NotifyBeneficiaryAndEnterpriseThatApplicationNeedsModification } from "../../../domain/convention/useCases/notifications/NotifyBeneficiaryAndEnterpriseThatApplicationNeedsModification";
 import { NotifyConventionReminder } from "../../../domain/convention/useCases/notifications/NotifyConventionReminder";
@@ -365,6 +366,11 @@ export const createUseCases = (
           uowPerformer,
           saveNotificationAndRelatedEvent,
         ),
+      notifyAllActorsThatConventionIsDeprecated:
+        new NotifyAllActorsThatConventionIsDeprecated(
+          uowPerformer,
+          saveNotificationAndRelatedEvent,
+        ),
       notifyBeneficiaryAndEnterpriseThatConventionNeedsModifications:
         new NotifyBeneficiaryAndEnterpriseThatApplicationNeedsModification(
           uowPerformer,
diff --git a/back/src/adapters/primary/subscribeToEvents.ts b/back/src/adapters/primary/subscribeToEvents.ts
index 8cd2178327..7cb6fc05b0 100644
--- a/back/src/adapters/primary/subscribeToEvents.ts
+++ b/back/src/adapters/primary/subscribeToEvents.ts
@@ -77,6 +77,7 @@ const getUseCasesByTopics = (
   ImmersionApplicationCancelled: [
     useCases.broadcastToPoleEmploiOnConventionUpdates,
   ],
+  ConventionDeprecated: [useCases.notifyAllActorsThatConventionIsDeprecated],
   ConventionReminderRequired: [useCases.notifyConventionReminder],
 
   // Establishment form related
diff --git a/back/src/domain/convention/ports/PoleEmploiGateway.ts b/back/src/domain/convention/ports/PoleEmploiGateway.ts
index 37f5b78909..6794a3deb3 100644
--- a/back/src/domain/convention/ports/PoleEmploiGateway.ts
+++ b/back/src/domain/convention/ports/PoleEmploiGateway.ts
@@ -18,6 +18,7 @@ export const conventionStatusToPoleEmploiStatus = {
   // si rejeté
   REJECTED: "REJETÉ",
   CANCELLED: "DEMANDE_ANNULEE",
+  DEPRECATED: "DEMANDE_OBSOLETE",
 
   // // à venir potentiellement
   // ABANDONNED: "ABANDONNÉ",
diff --git a/back/src/domain/convention/useCases/UpdateConventionStatus.testHelpers.ts b/back/src/domain/convention/useCases/UpdateConventionStatus.testHelpers.ts
index d88aa54ae9..74de02b73c 100644
--- a/back/src/domain/convention/useCases/UpdateConventionStatus.testHelpers.ts
+++ b/back/src/domain/convention/useCases/UpdateConventionStatus.testHelpers.ts
@@ -44,6 +44,7 @@ type ConventionDomainTopic = ExtractFromDomainTopics<
   | "ImmersionApplicationRejected"
   | "ImmersionApplicationRequiresModification"
   | "ImmersionApplicationCancelled"
+  | "ConventionDeprecated"
 > | null; // null is used to indicate that no domain event should be sent
 
 type SetupInitialStateParams = {
diff --git a/back/src/domain/convention/useCases/UpdateConventionStatus.ts b/back/src/domain/convention/useCases/UpdateConventionStatus.ts
index de74e249d2..59f5a915a8 100644
--- a/back/src/domain/convention/useCases/UpdateConventionStatus.ts
+++ b/back/src/domain/convention/useCases/UpdateConventionStatus.ts
@@ -32,6 +32,7 @@ const domainTopicByTargetStatusMap: Record<
   REJECTED: "ImmersionApplicationRejected",
   CANCELLED: "ImmersionApplicationCancelled",
   DRAFT: "ImmersionApplicationRequiresModification",
+  DEPRECATED: "ConventionDeprecated",
 };
 
 type UpdateConventionStatusPayload = {
@@ -76,7 +77,9 @@ export class UpdateConventionStatus extends TransactionalUseCase<
           : undefined,
       )
       .withStatusJustification(
-        status === "CANCELLED" || status === "REJECTED"
+        status === "CANCELLED" ||
+          status === "REJECTED" ||
+          status === "DEPRECATED"
           ? params.statusJustification
           : undefined,
       );
@@ -95,7 +98,9 @@ export class UpdateConventionStatus extends TransactionalUseCase<
           updatedDto,
           domainTopic,
           role,
-          params.status === "REJECTED" || params.status === "DRAFT"
+          params.status === "REJECTED" ||
+            params.status === "DRAFT" ||
+            params.status === "DEPRECATED"
             ? params.statusJustification
             : undefined,
         ),
diff --git a/back/src/domain/convention/useCases/UpdateConventionStatus.unit.test.ts b/back/src/domain/convention/useCases/UpdateConventionStatus.unit.test.ts
index acce325d6f..4d697879c8 100644
--- a/back/src/domain/convention/useCases/UpdateConventionStatus.unit.test.ts
+++ b/back/src/domain/convention/useCases/UpdateConventionStatus.unit.test.ts
@@ -213,6 +213,25 @@ describe("UpdateConventionStatus", () => {
     });
   });
 
+  describe("* -> DEPRECATED transition", () => {
+    testForAllRolesAndInitialStatusCases({
+      updateStatusParams: {
+        status: "DEPRECATED",
+        statusJustification: "my deprecation justification",
+      },
+      expectedDomainTopic: "ConventionDeprecated",
+      updatedFields: { statusJustification: "my deprecation justification" },
+      allowedRoles: ["backOffice", "validator", "counsellor"],
+      allowedInitialStatuses: [
+        "PARTIALLY_SIGNED",
+        "READY_TO_SIGN",
+        "IN_REVIEW",
+        "ACCEPTED_BY_COUNSELLOR",
+        "DRAFT",
+      ],
+    });
+  });
+
   it("fails for unknown application ids", async () => {
     const { updateConventionStatus, conventionRepository } =
       await setupInitialState({ initialStatus: "IN_REVIEW" });
diff --git a/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.ts b/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.ts
new file mode 100644
index 0000000000..640423ac01
--- /dev/null
+++ b/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.ts
@@ -0,0 +1,70 @@
+import { uniq } from "ramda";
+import { ConventionDto, conventionSchema } from "shared";
+import {
+  UnitOfWork,
+  UnitOfWorkPerformer,
+} from "../../../core/ports/UnitOfWork";
+import { TransactionalUseCase } from "../../../core/UseCase";
+import { SaveNotificationAndRelatedEvent } from "../../../generic/notifications/entities/Notification";
+
+export class NotifyAllActorsThatConventionIsDeprecated extends TransactionalUseCase<ConventionDto> {
+  constructor(
+    uowPerformer: UnitOfWorkPerformer,
+    private readonly saveNotificationAndRelatedEvent: SaveNotificationAndRelatedEvent,
+  ) {
+    super(uowPerformer);
+  }
+
+  inputSchema = conventionSchema;
+
+  public async _execute(
+    convention: ConventionDto,
+    uow: UnitOfWork,
+  ): Promise<void> {
+    const [agency] = await uow.agencyRepository.getByIds([convention.agencyId]);
+    if (!agency) {
+      throw new Error(
+        `Unable to send mail. No agency config found for ${convention.agencyId}`,
+      );
+    }
+
+    const {
+      beneficiary,
+      establishmentRepresentative,
+      beneficiaryCurrentEmployer,
+      beneficiaryRepresentative,
+    } = convention.signatories;
+
+    const recipients = uniq([
+      beneficiary.email,
+      establishmentRepresentative.email,
+      ...agency.counsellorEmails,
+      ...agency.validatorEmails,
+      ...(beneficiaryCurrentEmployer ? [beneficiaryCurrentEmployer.email] : []),
+      ...(beneficiaryRepresentative ? [beneficiaryRepresentative.email] : []),
+    ]);
+
+    await this.saveNotificationAndRelatedEvent(uow, {
+      kind: "email",
+      templatedContent: {
+        type: "DEPRECATED_CONVENTION_NOTIFICATION",
+        recipients,
+        params: {
+          internshipKind: convention.internshipKind,
+          beneficiaryFirstName: beneficiary.firstName,
+          beneficiaryLastName: beneficiary.lastName,
+          businessName: convention.businessName,
+          deprecationReason: convention.statusJustification || "",
+          dateStart: convention.dateStart,
+          dateEnd: convention.dateEnd,
+          immersionProfession: convention.immersionAppellation.appellationLabel,
+        },
+      },
+      followedIds: {
+        conventionId: convention.id,
+        agencyId: convention.agencyId,
+        establishmentSiret: convention.siret,
+      },
+    });
+  }
+}
diff --git a/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.unit.test.ts b/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.unit.test.ts
new file mode 100644
index 0000000000..9ae6eb6906
--- /dev/null
+++ b/back/src/domain/convention/useCases/notifications/NotifyAllActorsThatConventionIsDeprecated.unit.test.ts
@@ -0,0 +1,107 @@
+import {
+  AgencyDto,
+  AgencyDtoBuilder,
+  BeneficiaryCurrentEmployer,
+  BeneficiaryRepresentative,
+  ConventionDtoBuilder,
+} from "shared";
+import { expectNotifyBeneficiaryAndEnterpriseThatConventionIsDeprecated } from "../../../../_testBuilders/emailAssertions";
+import {
+  createInMemoryUow,
+  InMemoryUnitOfWork,
+} from "../../../../adapters/primary/config/uowConfig";
+import { CustomTimeGateway } from "../../../../adapters/secondary/core/TimeGateway/CustomTimeGateway";
+import { UuidV4Generator } from "../../../../adapters/secondary/core/UuidGeneratorImplementations";
+import { InMemoryUowPerformer } from "../../../../adapters/secondary/InMemoryUowPerformer";
+import { makeCreateNewEvent } from "../../../core/eventBus/EventBus";
+import {
+  EmailNotification,
+  makeSaveNotificationAndRelatedEvent,
+} from "../../../generic/notifications/entities/Notification";
+import { NotifyAllActorsThatConventionIsDeprecated } from "./NotifyAllActorsThatConventionIsDeprecated";
+
+const beneficiaryRepresentative: BeneficiaryRepresentative = {
+  role: "beneficiary-representative",
+  email: "legal@representative.com",
+  firstName: "The",
+  lastName: "Representative",
+  phone: "1234567",
+};
+
+const beneficiaryCurrentEmployer: BeneficiaryCurrentEmployer = {
+  firstName: "ali",
+  lastName: "baba",
+  businessName: "business",
+  businessSiret: "01234567890123",
+  email: "beneficiary-current-employer@gmail.com",
+  job: "job",
+  phone: "0011223344",
+  role: "beneficiary-current-employer",
+  signedAt: new Date().toISOString(),
+  businessAddress: "Rue des Bouchers 67065 Strasbourg",
+};
+
+const deprecatedConvention = new ConventionDtoBuilder()
+  .withStatus("DEPRECATED")
+  .withStatusJustification("test-deprecation-justification")
+  .withBeneficiaryRepresentative(beneficiaryRepresentative)
+  .withBeneficiaryCurrentEmployer(beneficiaryCurrentEmployer)
+  .build();
+
+const counsellorEmails = ["counsellor1@email.fr", "counsellor2@email.fr"];
+
+const validatorEmails = ["validator@gmail.com"];
+
+const defaultAgency = AgencyDtoBuilder.create(deprecatedConvention.agencyId)
+  .withName("test-agency-name")
+  .withCounsellorEmails(counsellorEmails)
+  .withValidatorEmails(validatorEmails)
+  .build();
+
+describe("NotifyAllActorsThatApplicationIsDeprecated", () => {
+  let useCase: NotifyAllActorsThatConventionIsDeprecated;
+  let agency: AgencyDto;
+  let uow: InMemoryUnitOfWork;
+
+  beforeEach(() => {
+    agency = defaultAgency;
+    uow = createInMemoryUow();
+    uow.agencyRepository.setAgencies([agency]);
+
+    const timeGateway = new CustomTimeGateway();
+    const uuidGenerator = new UuidV4Generator();
+    const createNewEvent = makeCreateNewEvent({ uuidGenerator, timeGateway });
+    const saveNotificationAndRelatedEvent = makeSaveNotificationAndRelatedEvent(
+      createNewEvent,
+      uuidGenerator,
+      timeGateway,
+    );
+    useCase = new NotifyAllActorsThatConventionIsDeprecated(
+      new InMemoryUowPerformer(uow),
+      saveNotificationAndRelatedEvent,
+    );
+  });
+
+  it("Sends a conevention deprecated notification to all actors", async () => {
+    await useCase.execute(deprecatedConvention);
+
+    const templatedEmailsSent = uow.notificationRepository.notifications
+      .filter((notif): notif is EmailNotification => notif.kind === "email")
+      .map((notif) => notif.templatedContent);
+
+    expect(templatedEmailsSent).toHaveLength(1);
+
+    expectNotifyBeneficiaryAndEnterpriseThatConventionIsDeprecated(
+      templatedEmailsSent[0],
+      [
+        deprecatedConvention.signatories.beneficiary.email,
+        deprecatedConvention.signatories.establishmentRepresentative.email,
+        ...counsellorEmails,
+        ...validatorEmails,
+        deprecatedConvention.signatories.beneficiaryCurrentEmployer!.email,
+        deprecatedConvention.signatories.beneficiaryRepresentative!.email,
+      ],
+      deprecatedConvention,
+    );
+  });
+});
diff --git a/back/src/domain/core/eventBus/events.ts b/back/src/domain/core/eventBus/events.ts
index fcf501297e..4549887d14 100644
--- a/back/src/domain/core/eventBus/events.ts
+++ b/back/src/domain/core/eventBus/events.ts
@@ -62,6 +62,7 @@ export type DomainEvent =
   | GenericEvent<"ImmersionApplicationRejected", ConventionDto>
   | GenericEvent<"ImmersionApplicationCancelled", ConventionDto>
   | GenericEvent<"ImmersionApplicationRequiresModification", ConventionRequiresModificationPayload>
+  | GenericEvent<"ConventionDeprecated", ConventionDto>
 
   // MAGIC LINK RENEWAL
   | GenericEvent<"MagicLinkRenewalRequested", RenewMagicLinkPayload>
diff --git a/front/src/app/components/admin/ConventionManageActions.tsx b/front/src/app/components/admin/ConventionManageActions.tsx
index f50f757bf7..117d773c5e 100644
--- a/front/src/app/components/admin/ConventionManageActions.tsx
+++ b/front/src/app/components/admin/ConventionManageActions.tsx
@@ -69,6 +69,16 @@ export const ConventionManageActions = ({
         </VerificationActionButton>
       )}
 
+      {isAllowedTransition(convention.status, "DEPRECATED", role) && (
+        <VerificationActionButton
+          disabled={disabled}
+          newStatus="DEPRECATED"
+          onSubmit={createOnSubmitWithFeedbackKind("deprecated")}
+        >
+          {t.verification.markAsDeprecated}
+        </VerificationActionButton>
+      )}
+
       {isAllowedTransition(convention.status, "DRAFT", role) && (
         <VerificationActionButton
           disabled={disabled}
diff --git a/front/src/app/components/admin/ConventionValidation.tsx b/front/src/app/components/admin/ConventionValidation.tsx
index 0846abb71f..18ee22f8da 100644
--- a/front/src/app/components/admin/ConventionValidation.tsx
+++ b/front/src/app/components/admin/ConventionValidation.tsx
@@ -23,6 +23,7 @@ const labelByStatus: Record<ConventionStatus, string> = {
   PARTIALLY_SIGNED: "[✍️ Partiellement signée]",
   READY_TO_SIGN: "[📄 En cours de signature]",
   REJECTED: "[❌ DEMANDE REJETÉE]",
+  DEPRECATED: "[❌ DEMANDE OBSOLÈTE]",
 };
 
 export interface ConventionValidationProps {
diff --git a/front/src/app/components/forms/convention/ConventionFeedbackNotification.tsx b/front/src/app/components/forms/convention/ConventionFeedbackNotification.tsx
index 990e24f407..88b9aa225b 100644
--- a/front/src/app/components/forms/convention/ConventionFeedbackNotification.tsx
+++ b/front/src/app/components/forms/convention/ConventionFeedbackNotification.tsx
@@ -70,6 +70,8 @@ export const createConventionFeedbackMessageByKind = (
     </InitialSubmitSuccessMessageBase>
   ),
   cancelled: "Succès. La convention a bien été annulée.",
+  deprecated:
+    "Succès. La convention a bien été supprimé. La confirmation de cette suppression va être communiquée par mail à chacun des signataires.",
 });
 
 const InitialSubmitSuccessMessageBase = ({
diff --git a/front/src/app/components/forms/convention/VerificationActionButton.tsx b/front/src/app/components/forms/convention/VerificationActionButton.tsx
index 2bf4e8c8e4..baaeff93d1 100644
--- a/front/src/app/components/forms/convention/VerificationActionButton.tsx
+++ b/front/src/app/components/forms/convention/VerificationActionButton.tsx
@@ -50,6 +50,13 @@ const { CancelModal, openCancelModal, closeCancelModal } = createModal({
   isOpenedByDefault: false,
 });
 
+const { DeprecateModal, openDeprecateModal, closeDeprecateModal } = createModal(
+  {
+    name: "deprecate",
+    isOpenedByDefault: false,
+  },
+);
+
 const ModalByStatus = (status: VerificationActionsModal) => {
   const modals = {
     DRAFT: {
@@ -67,6 +74,11 @@ const ModalByStatus = (status: VerificationActionsModal) => {
       openModal: openCancelModal,
       closeModal: closeCancelModal,
     },
+    DEPRECATED: {
+      modal: DeprecateModal,
+      openModal: openDeprecateModal,
+      closeModal: closeDeprecateModal,
+    },
   };
   return modals[status];
 };
@@ -91,6 +103,8 @@ export const VerificationActionButton = ({
     ACCEPTED_BY_COUNSELLOR:
       domElementIds.manageConvention.conventionValidationValidateButton,
     CANCELLED: domElementIds.manageConvention.conventionValidationCancelButton,
+    DEPRECATED:
+      domElementIds.manageConvention.conventionValidationDeprecateButton,
   };
 
   return (
@@ -249,11 +263,13 @@ const JustificationModalContent = ({
 const inputLabelByStatus: Record<ConventionStatusWithJustification, string> = {
   DRAFT: "Précisez la raison et la modification nécessaire",
   REJECTED: "Pourquoi l'immersion est-elle refusée ?",
-  CANCELLED: "Pourquoi souhaitez-vous annuler cette convention?",
+  CANCELLED: "Pourquoi souhaitez-vous annuler cette convention ?",
+  DEPRECATED: "Pourquoi l'immersion est-elle obsolète ?",
 };
 
 const confirmByStatus: Record<ConventionStatusWithJustification, string> = {
   DRAFT: "Confirmer la demande de modification",
   REJECTED: "Confirmer le refus",
   CANCELLED: "Confirmer l'annulation",
+  DEPRECATED: "Confirmer que la demande est obsolète",
 };
diff --git a/front/src/app/contents/forms/convention/textSetup.tsx b/front/src/app/contents/forms/convention/textSetup.tsx
index 1d28d48cd4..84bdcf5ea5 100644
--- a/front/src/app/contents/forms/convention/textSetup.tsx
+++ b/front/src/app/contents/forms/convention/textSetup.tsx
@@ -173,6 +173,7 @@ const immersionTexts = (internshipKind: InternshipKind) => ({
     markAsValidated: "Valider la demande",
     markAsCancelled: "Annuler la demande",
     conventionAlreadyCancelled: "Demande déjà annulée.",
+    markAsDeprecated: "Marquer la demande comme obsolète",
   },
   sign: {
     title:
diff --git a/front/src/app/pages/admin/EmailPreviewTab.tsx b/front/src/app/pages/admin/EmailPreviewTab.tsx
index b9ff954189..703109ded1 100644
--- a/front/src/app/pages/admin/EmailPreviewTab.tsx
+++ b/front/src/app/pages/admin/EmailPreviewTab.tsx
@@ -449,4 +449,14 @@ export const defaultEmailValueByEmailKind: {
   IC_USER_RIGHTS_HAS_CHANGED: {
     agencyName: "AGENCY_NAME",
   },
+  DEPRECATED_CONVENTION_NOTIFICATION: {
+    beneficiaryFirstName: "BENEFICIARY_FIRST_NAME",
+    beneficiaryLastName: "BENEFICIARY_LAST_NAME",
+    businessName: "BUSINESS_NAME",
+    dateStart: "DATE_START",
+    dateEnd: "DATE_END",
+    deprecationReason: "DEPRECATION_REASON",
+    immersionProfession: "IMMERSION_PROFESSION",
+    internshipKind: "immersion",
+  },
 };
diff --git a/front/src/core-logic/domain/convention/convention.slice.ts b/front/src/core-logic/domain/convention/convention.slice.ts
index d7d788c5a0..b6c938b0d6 100644
--- a/front/src/core-logic/domain/convention/convention.slice.ts
+++ b/front/src/core-logic/domain/convention/convention.slice.ts
@@ -16,7 +16,8 @@ type ConventionValidationFeedbackKind =
   | "modificationAskedFromCounsellorOrValidator"
   | "markedAsEligible"
   | "markedAsValidated"
-  | "cancelled";
+  | "cancelled"
+  | "deprecated";
 
 type ConventionSignatoryFeedbackKind =
   | "justSubmitted"
diff --git a/shared/src/convention/ConventionDto.unit.test.ts b/shared/src/convention/ConventionDto.unit.test.ts
index c04e3cc98f..b70eb2d7b9 100644
--- a/shared/src/convention/ConventionDto.unit.test.ts
+++ b/shared/src/convention/ConventionDto.unit.test.ts
@@ -303,6 +303,7 @@ describe("conventionDtoSchema", () => {
           "PARTIALLY_SIGNED",
           "REJECTED",
           "CANCELLED",
+          "DEPRECATED",
         ]);
 
       it.each(allowWithoutSignature.map((status) => ({ status })))(
diff --git a/shared/src/convention/convention.dto.ts b/shared/src/convention/convention.dto.ts
index 9aeabee494..4e1d5a8158 100644
--- a/shared/src/convention/convention.dto.ts
+++ b/shared/src/convention/convention.dto.ts
@@ -43,6 +43,7 @@ export const conventionStatusesWithJustification = [
   "REJECTED",
   "DRAFT",
   "CANCELLED",
+  "DEPRECATED",
 ] as const;
 export const conventionStatuses = [
   ...conventionStatusesWithoutJustification,
diff --git a/shared/src/convention/conventionRefinements.ts b/shared/src/convention/conventionRefinements.ts
index e1f0054438..9244f0b3ff 100644
--- a/shared/src/convention/conventionRefinements.ts
+++ b/shared/src/convention/conventionRefinements.ts
@@ -59,6 +59,7 @@ const statusesAllowedWithoutSign: ConventionStatus[] = [
   "PARTIALLY_SIGNED",
   "REJECTED",
   "CANCELLED",
+  "DEPRECATED",
 ];
 
 export const mustBeSignedByEveryone = (
diff --git a/shared/src/convention/conventionStatusTransitions.ts b/shared/src/convention/conventionStatusTransitions.ts
index d87827b804..b89f61de5a 100644
--- a/shared/src/convention/conventionStatusTransitions.ts
+++ b/shared/src/convention/conventionStatusTransitions.ts
@@ -76,4 +76,14 @@ export const statusTransitionConfigs: Record<
       ...validSignatoryRoles,
     ],
   },
+  DEPRECATED: {
+    validInitialStatuses: [
+      "ACCEPTED_BY_COUNSELLOR",
+      "IN_REVIEW",
+      "PARTIALLY_SIGNED",
+      "READY_TO_SIGN",
+      "DRAFT",
+    ],
+    validRoles: ["counsellor", "validator", "backOffice"],
+  },
 };
diff --git a/shared/src/domElementIds.ts b/shared/src/domElementIds.ts
index 38f66434e0..982d2fe2de 100644
--- a/shared/src/domElementIds.ts
+++ b/shared/src/domElementIds.ts
@@ -228,6 +228,8 @@ export const domElementIds = {
     conventionValidationRequestEditButton:
       "im-convention-validation__request-edit-button",
     conventionValidationCancelButton: "im-convention-validation__cancel-button",
+    conventionValidationDeprecateButton:
+      "im-convention-validation__deprecate-button",
     justificationModalCancelButton: "im-justification-modal__cancel-button",
     justificationModalSubmitButton: "im-justification-modal__submit-button",
   },
diff --git a/shared/src/email/EmailParamsByEmailType.ts b/shared/src/email/EmailParamsByEmailType.ts
index cb8d591fe7..ce49162477 100644
--- a/shared/src/email/EmailParamsByEmailType.ts
+++ b/shared/src/email/EmailParamsByEmailType.ts
@@ -123,6 +123,16 @@ export type EmailParamsByEmailType = {
     agency: string;
     agencyLogoUrl: AbsoluteUrl | undefined;
   };
+  DEPRECATED_CONVENTION_NOTIFICATION: {
+    internshipKind: InternshipKind;
+    beneficiaryFirstName: string;
+    beneficiaryLastName: string;
+    deprecationReason: string;
+    businessName: string;
+    immersionProfession: string;
+    dateStart: string;
+    dateEnd: string;
+  };
   CONVENTION_MODIFICATION_REQUEST_NOTIFICATION: {
     internshipKind: InternshipKind;
     beneficiaryFirstName: string;
diff --git a/shared/src/email/emailTemplatesByName.ts b/shared/src/email/emailTemplatesByName.ts
index 91c5a8edae..d60380f9d2 100644
--- a/shared/src/email/emailTemplatesByName.ts
+++ b/shared/src/email/emailTemplatesByName.ts
@@ -1153,4 +1153,48 @@ export const emailTemplatesByName =
         subContent: defaultSignature("immersion"),
       }),
     },
+    DEPRECATED_CONVENTION_NOTIFICATION: {
+      niceName: "Notification de convention obsolète",
+      tags: ["dépreciation demande d'immersion"],
+      createEmailVariables: ({
+        immersionProfession,
+        beneficiaryFirstName,
+        beneficiaryLastName,
+        deprecationReason,
+        businessName,
+        internshipKind,
+        dateStart,
+        dateEnd,
+      }) => ({
+        subject:
+          internshipKind === "immersion"
+            ? `Demande d'immersion pour observer l'activité de ${immersionProfession} au sein de ${businessName} obsolète`
+            : `Mini Stage - Demande de mini stage pour l'activité de ${immersionProfession} au sein de ${businessName} obsolète`,
+        greetings: "Bonjour,",
+        content: `
+      Nous vous informons que la demande ${
+        internshipKind === "immersion"
+          ? "d'immersion professionnelle"
+          : "de mini stage"
+      } de ${beneficiaryFirstName} ${beneficiaryLastName} pour réaliser ${
+          internshipKind === "immersion"
+            ? "une immersion professionnelle"
+            : "un mini stage"
+        } du ${
+          isStringDate(dateStart)
+            ? toDisplayedDate(new Date(dateStart), true)
+            : "DATE INVALIDE"
+        } au ${
+          isStringDate(dateEnd)
+            ? toDisplayedDate(new Date(dateEnd), true)
+            : "DATE INVALIDE"
+        } dans l'entreprise ${businessName} est supprimé.
+      
+      Les raisons en sont: ${deprecationReason}.         
+      
+      Bien cordialement,       
+      `,
+        subContent: defaultSignature(internshipKind),
+      }),
+    },
   });