diff --git a/lib/archive.js b/lib/archive.js
index b01fb0b..621b920 100644
--- a/lib/archive.js
+++ b/lib/archive.js
@@ -61,10 +61,12 @@ const callArchive = async (payload, e18JobId, e18TaskId, endpoint) => {
   }
 }
 
+const unknownAddress = 'Ukjent adresse'
+
 const getAddress = streetAddress => {
   if (streetAddress.Adresselinje1 && streetAddress.Adresselinje1 !== ' ') return streetAddress.Adresselinje1
   if (streetAddress.Adresselinje2 && streetAddress.Adresselinje2 !== ' ') return streetAddress.Adresselinje2
-  return 'Ukjent adresse'
+  return unknownAddress
 }
 
 module.exports.archive = async (blobContent, archiveOptions) => {
@@ -195,3 +197,144 @@ module.exports.syncElevmappa = async blobContent => {
   // still nothing :O
   logger('warn', ['archive', 'syncElevmappa', 'Hit kommer vi aldri 🎉'])
 }
+
+// Archive response letter - creates a pdf and archives it with status R, ready for dispatching with SvarUT
+module.exports.archiveResponseLetter = async (blobContent) => {
+  try {
+    blobContent.flow.archiveResponseLetterTaskId = blobContent.flow.archiveResponseLetterTaskId || await createTask(blobContent.e18JobId, { system: 'p360', method: 'archive' })
+
+    logger('info', ['archive', 'archiveResponseLetter'])
+
+    // First check if we have address block or invalid zip-code (If address code is not 0, or if zipcode length is not 4, or if zipcode is 9999, or if address is unknown)
+    let payload
+    let invalidAddressMsg = 'Svarbrev må opprettes og sendes manuelt til mottaker for å sikre korrekt addressehåndtering. '
+    blobContent.flow.invalidAddress = false
+
+    if (blobContent.flow.syncElevmappa.privatePerson.addressCode !== 0) {
+      blobContent.flow.invalidAddress = true
+      invalidAddressMsg += 'Mottaker er ikke vanlig bosatt (har adressesperrre eller klientadresse).'
+    } else if (blobContent.flow.syncElevmappa.privatePerson.zipCode.length !== 4 || blobContent.flow.syncElevmappa.privatePerson.zipCode === '9999') {
+      blobContent.flow.invalidAddress = true
+      invalidAddressMsg += 'Mottakers postnummer er ikke et gyldig norsk postnummer.'
+    } else if (blobContent.flow.syncElevmappa.privatePerson.streetAddress === unknownAddress) {
+      blobContent.flow.invalidAddress = true
+      invalidAddressMsg += 'Gyldig mottaker-addresse ble ikke funnet i folkeregisteret eller i VIGO.'
+    }
+    if (blobContent.flow.invalidAddress) {
+      logger('info', ['archive', 'archiveResponseLetter', invalidAddressMsg, 'will not send on SvarUT, but update incoming document with a note.'])
+      payload = {
+        service: 'DocumentService',
+        method: 'UpdateDocument',
+        parameter: {
+          DocumentNumber: blobContent.flow.archive.DocumentNumber,
+          Remarks: [
+            {
+              Title: invalidAddressMsg,
+              RemarkType: 'ME'
+            }
+          ]
+        }
+      }
+    } else {
+      logger('info', ['archive', 'archiveResponseLetter', 'address is ok, will create and archive response letter'])
+      payload = {
+        system: 'vigo',
+        template: `${blobContent.Dokumentelement.Dokumenttype}-response`,
+        parameter: {
+          caseNumber: blobContent.flow.syncElevmappa.elevmappe.CaseNumber,
+          ssn: blobContent.flow.syncElevmappa.privatePerson.ssn,
+          studentName: `${blobContent.flow.syncElevmappa.privatePerson.firstName} ${blobContent.flow.syncElevmappa.privatePerson.lastName}`,
+          streetAddress: blobContent.flow.syncElevmappa.privatePerson.streetAddress,
+          zipCode: blobContent.flow.syncElevmappa.privatePerson.zipCode,
+          zipPlace: blobContent.flow.syncElevmappa.privatePerson.zipPlace,
+          documentDate: blobContent.Dokumentelement.Dokumentdato
+        }
+      }
+    }
+
+    const res = await callArchive(payload, blobContent.e18JobId, blobContent.flow.archiveResponseLetterTaskId, 'archive')
+    if (typeof res === 'object') {
+      blobContent.flow.archiveResponseLetter = res
+      blobContent.flow.archiveResponseLetter.status = 'finished'
+    }
+  } catch (error) {
+    blobContent.flow.archiveResponseLetter = { error }
+    blobContent.flow.archiveResponseLetter.status = 'failed'
+  }
+
+  return blobContent
+}
+
+// Archive response letter - creates a pdf and archives it with status R, ready for dispatching with SvarUT
+module.exports.sendResponseLetter = async (blobContent) => {
+  try {
+    blobContent.flow.sendResponseLetterTaskId = blobContent.flow.sendResponseLetterTaskId || await createTask(blobContent.e18JobId, { system: 'p360', method: 'dispatch' })
+
+    logger('info', ['archive', 'sendResponseLetter'])
+
+    if (blobContent.flow.invalidAddress) {
+      logger('info', ['archive', 'sendResponseLetter', 'Either address block or invalid address, response letter has not been created, and will not be sent'])
+      blobContent.flow.sendResponseLetter = { msg: 'Either address block or invalid address, response letter has not been created, and will not be sent' }
+      blobContent.flow.sendResponseLetter.status = 'finished'
+    } else {
+      logger('info', ['archive', 'sendResponseLetter', 'Dispatching with SvarUT'])
+      const payload = {
+        service: 'DocumentService',
+        method: 'DispatchDocuments',
+        parameter: {
+          Documents: [
+            {
+              DocumentNumber: blobContent.flow.archiveResponseLetter.DocumentNumber
+            }
+          ]
+        }
+      }
+      const res = await callArchive(payload, blobContent.e18JobId, blobContent.flow.sendResponseLetterTaskId, 'archive')
+      if (typeof res === 'object') {
+        blobContent.flow.sendResponseLetter = res
+        blobContent.flow.sendResponseLetter.status = 'finished'
+      }
+    }
+  } catch (error) {
+    blobContent.flow.sendResponseLetter = { error }
+    blobContent.flow.sendResponseLetter.status = 'failed'
+  }
+
+  return blobContent
+}
+
+// Archive response letter - creates a pdf and archives it with status R, ready for dispatching with SvarUT
+module.exports.signOffResponseLetter = async (blobContent) => {
+  try {
+    blobContent.flow.signOffResponseLetterTaskId = blobContent.flow.signOffResponseLetterTaskId || await createTask(blobContent.e18JobId, { system: 'p360', method: 'signOff' })
+
+    logger('info', ['archive', 'signOffResponseLetter'])
+
+    if (blobContent.flow.invalidAddress) {
+      logger('info', ['archive', 'signOffResponseLetter', 'Either address block or invalid address, response letter has not been created, will NOT signoff'])
+      blobContent.flow.signOffResponseLetter = { msg: 'Either address block or invalid address, response letter has not been created, will NOT signoff' }
+      blobContent.flow.signOffResponseLetter.status = 'finished'
+    } else {
+      logger('info', ['archive', 'signOffResponseLetter', 'Signing off the original document'])
+      const payload = {
+        service: 'DocumentService',
+        method: 'SignOffDocument',
+        parameter: {
+          Document: blobContent.flow.archive.DocumentNumber,
+          ResponseCode: 'BU',
+          ReplyDocument: blobContent.flow.archiveResponseLetter.DocumentNumber
+        }
+      }
+      const res = await callArchive(payload, blobContent.e18JobId, blobContent.flow.signOffResponseLetterTaskId, 'archive')
+      if (typeof res === 'object') {
+        blobContent.flow.signOffResponseLetter = res
+        blobContent.flow.signOffResponseLetter.status = 'finished'
+      }
+    }
+  } catch (error) {
+    blobContent.flow.signOffResponseLetter = { error }
+    blobContent.flow.signOffResponseLetter.status = 'failed'
+  }
+
+  return blobContent
+}
\ No newline at end of file
diff --git a/lib/flows/KONTRAKT.js b/lib/flows/KONTRAKT.js
index e539a87..a53242f 100644
--- a/lib/flows/KONTRAKT.js
+++ b/lib/flows/KONTRAKT.js
@@ -5,6 +5,9 @@ module.exports = async blobContent => {
     syncElevmappa: true,
     archive: true,
     statusVigo: true,
+    archiveResponseLetter: true,
+    sendResponseLetter: true,
+    signOffResponseLetter: true,
     e18Stats: true
   })
 }
diff --git a/lib/run-flow.js b/lib/run-flow.js
index 321c05f..2497e16 100644
--- a/lib/run-flow.js
+++ b/lib/run-flow.js
@@ -1,15 +1,25 @@
-const { archive, signOff, syncElevmappa } = require('./archive')
+const { archive, signOff, syncElevmappa, archiveResponseLetter, sendResponseLetter, signOffResponseLetter } = require('./archive')
 const { createTaskTemplate, complete } = require('./e18')
 const { updateStatusFlow } = require('./update-vigo-status')
 const { RETRY_INTERVAL_HOURS, RETRY_MAX_COUNT } = require('../config')
 const { logger } = require('@vtfk/logger')
 
+/**
+ * @typedef {Object} archiveOptions
+ * @property {boolean} useStudentName
+ * @property {boolean} determineFileExt
+ */
+
 /**
  * @typedef {Object} FlowDefinition
  * @property {boolean} syncElevmappa
  * @property {boolean} archive
+ * @property {archiveOptions} archiveOptions
  * @property {boolean} signOff
  * @property {boolean} statusVigo
+ * @property {boolean} archiveResponseLetter
+ * @property {boolean} sendResponseLetter
+ * @property {boolean} signOffResponseLetter
  * @property {boolean} e18Stats
  */
 
@@ -76,6 +86,54 @@ module.exports = async (blobContent, flowDef) => {
     }
   }
 
+  // create and archive response letter
+  if (flowDef.archiveResponseLetter) {
+    if (flowDef.signOff) throw new Error('You cannot both have regular signoff and reponse-letter activated. You need to activate signoffResponseLetter instead')
+    
+    if (!blobContent.flow.archiveResponseLetter || blobContent.flow.archiveResponseLetter.status !== 'finished') {
+      blobContent = await archiveResponseLetter(blobContent)
+    }
+
+    if (blobContent.flow.archiveResponseLetter.status !== 'finished') {
+      const retryMsg = (blobContent.retryCount >= RETRY_MAX_COUNT) ? `Max retry count ${RETRY_MAX_COUNT} reached, moved to error` : `Will retry in ${(blobContent.retryCount + 1) * RETRY_INTERVAL_HOURS} hours`
+      logger('warn', ['flow', 'archiveResponseLetter failed', 'Aborting', retryMsg])
+      blobContent.flow.status = 'failed'
+      return blobContent
+    }
+  }
+
+  // send response letter
+  if (flowDef.sendResponseLetter) {
+    if (!flowDef.archiveResponseLetter) throw new Error('You cannot use sendResponseLetter without using archiveResponseLetter')
+    
+    if (!blobContent.flow.sendResponseLetter || blobContent.flow.sendResponseLetter.status !== 'finished') {
+      blobContent = await sendResponseLetter(blobContent)
+    }
+
+    if (blobContent.flow.sendResponseLetter.status !== 'finished') {
+      const retryMsg = (blobContent.retryCount >= RETRY_MAX_COUNT) ? `Max retry count ${RETRY_MAX_COUNT} reached, moved to error` : `Will retry in ${(blobContent.retryCount + 1) * RETRY_INTERVAL_HOURS} hours`
+      logger('warn', ['flow', 'sendResponseLetter failed', 'Aborting', retryMsg])
+      blobContent.flow.status = 'failed'
+      return blobContent
+    }
+  }
+
+  // sign off with the original document with response letters DocumentNumber
+  if (flowDef.signOffResponseLetter) {
+    if (!flowDef.sendResponseLetter) throw new Error('You cannot use signOffResponseLetter without using sendResponseLetter')
+    
+    if (!blobContent.flow.signOffResponseLetter || blobContent.flow.signOffResponseLetter.status !== 'finished') {
+      blobContent = await signOffResponseLetter(blobContent)
+    }
+
+    if (blobContent.flow.signOffResponseLetter.status !== 'finished') {
+      const retryMsg = (blobContent.retryCount >= RETRY_MAX_COUNT) ? `Max retry count ${RETRY_MAX_COUNT} reached, moved to error` : `Will retry in ${(blobContent.retryCount + 1) * RETRY_INTERVAL_HOURS} hours`
+      logger('warn', ['flow', 'signOffResponseLetter failed', 'Aborting', retryMsg])
+      blobContent.flow.status = 'failed'
+      return blobContent
+    }
+  }
+
   // add e18 task for statistics
   if (flowDef.e18Stats) {
     if (!blobContent.flow.e18StatsTask || blobContent.flow.e18StatsTask.status !== 'finished') {
diff --git a/mock/KONTRAKT-invalid-address.json b/mock/KONTRAKT-invalid-address.json
new file mode 100644
index 0000000..1b1bd91
--- /dev/null
+++ b/mock/KONTRAKT-invalid-address.json
@@ -0,0 +1,22 @@
+{
+  "UnikId": "26",
+  "FagsystemNavn": "VIGO",
+  "Fodselsnummer": "12345678911",
+  "Fornavn": "Bjarte",
+  "Etternavn": "Tjøstheim",
+  "Skole": "",
+  "Fylke": "38",
+  "FolkeRegisterAdresse": {
+    "Adresselinje2": "",
+    "Postnummmer": "1234",
+    "Poststed": "_ Ukjent"
+  },
+  "Dokumentelement": {
+    "Dokumenttype": "KONTRAKT",
+    "Dokumenttittel": "Ny søker (m/ønsker / avg.elev)",
+    "DokumentId": "invalidAddress",
+    "Dokumentdato": "2022-01-06T00:00:00+01:00",
+    "Dokumentfil": "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"
+  },
+  "retryCount": 0
+}
diff --git a/mock/KONTRAKT.json b/mock/KONTRAKT.json
new file mode 100644
index 0000000..1a9dfba
--- /dev/null
+++ b/mock/KONTRAKT.json
@@ -0,0 +1,22 @@
+{
+  "UnikId": "26",
+  "FagsystemNavn": "VIGO",
+  "Fodselsnummer": "12345678911",
+  "Fornavn": "Bjarte",
+  "Etternavn": "Tjøstheim",
+  "Skole": "",
+  "Fylke": "38",
+  "FolkeRegisterAdresse": {
+    "Adresselinje2": "Jeg har adresse og gyldig postnr",
+    "Postnummmer": "1234",
+    "Poststed": "Klukkstein"
+  },
+  "Dokumentelement": {
+    "Dokumenttype": "KONTRAKT",
+    "Dokumenttittel": "Ny søker (m/ønsker / avg.elev)",
+    "DokumentId": "ADADBKHFGSYI",
+    "Dokumentdato": "2022-01-06T00:00:00+01:00",
+    "Dokumentfil": "JVBERi0xLjcKCjEgMCBvYmogICUgZW50cnkgcG9pbnQKPDwKICAvVHlwZSAvQ2F0YWxvZwogIC9QYWdlcyAyIDAgUgo+PgplbmRvYmoKCjIgMCBvYmoKPDwKICAvVHlwZSAvUGFnZXMKICAvTWVkaWFCb3ggWyAwIDAgMjAwIDIwMCBdCiAgL0NvdW50IDEKICAvS2lkcyBbIDMgMCBSIF0KPj4KZW5kb2JqCgozIDAgb2JqCjw8CiAgL1R5cGUgL1BhZ2UKICAvUGFyZW50IDIgMCBSCiAgL1Jlc291cmNlcyA8PAogICAgL0ZvbnQgPDwKICAgICAgL0YxIDQgMCBSIAogICAgPj4KICA+PgogIC9Db250ZW50cyA1IDAgUgo+PgplbmRvYmoKCjQgMCBvYmoKPDwKICAvVHlwZSAvRm9udAogIC9TdWJ0eXBlIC9UeXBlMQogIC9CYXNlRm9udCAvVGltZXMtUm9tYW4KPj4KZW5kb2JqCgo1IDAgb2JqICAlIHBhZ2UgY29udGVudAo8PAogIC9MZW5ndGggNDQKPj4Kc3RyZWFtCkJUCjcwIDUwIFRECi9GMSAxMiBUZgooSGVsbG8sIHdvcmxkISkgVGoKRVQKZW5kc3RyZWFtCmVuZG9iagoKeHJlZgowIDYKMDAwMDAwMDAwMCA2NTUzNSBmIAowMDAwMDAwMDEwIDAwMDAwIG4gCjAwMDAwMDAwNzkgMDAwMDAgbiAKMDAwMDAwMDE3MyAwMDAwMCBuIAowMDAwMDAwMzAxIDAwMDAwIG4gCjAwMDAwMDAzODAgMDAwMDAgbiAKdHJhaWxlcgo8PAogIC9TaXplIDYKICAvUm9vdCAxIDAgUgo+PgpzdGFydHhyZWYKNDkyCiUlRU9G"
+  },
+  "retryCount": 0
+}