diff --git a/backend/src/graphql/resolver/TransactionResolver.ts b/backend/src/graphql/resolver/TransactionResolver.ts
index ed9528b48..0ff43486c 100644
--- a/backend/src/graphql/resolver/TransactionResolver.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.ts
@@ -34,6 +34,9 @@ import { virtualLinkTransaction, virtualDecayTransaction } from '@/util/virtualT
 import Decimal from 'decimal.js-light'
 import { calculateDecay } from '@/util/decay'
 
+const MEMO_MAX_CHARS = 255
+const MEMO_MIN_CHARS = 5
+
 export const executeTransaction = async (
   amount: Decimal,
   memo: string,
@@ -45,6 +48,14 @@ export const executeTransaction = async (
     throw new Error('Sender and Recipient are the same.')
   }
 
+  if (memo.length > MEMO_MAX_CHARS) {
+    throw new Error(`memo text is too long (${MEMO_MAX_CHARS} characters maximum)`)
+  }
+
+  if (memo.length < MEMO_MIN_CHARS) {
+    throw new Error(`memo text is too short (${MEMO_MIN_CHARS} characters minimum)`)
+  }
+
   // validate amount
   const receivedCallDate = new Date()
   const sendBalance = await calculateBalance(sender.id, amount.mul(-1), receivedCallDate)
diff --git a/frontend/src/components/GddSend/TransactionForm.spec.js b/frontend/src/components/GddSend/TransactionForm.spec.js
index e105e2e1b..db971a2bc 100644
--- a/frontend/src/components/GddSend/TransactionForm.spec.js
+++ b/frontend/src/components/GddSend/TransactionForm.spec.js
@@ -62,11 +62,8 @@ describe('TransactionForm', () => {
       })
     })
 
-    describe('is selected: "send"', () => {
+    describe('send GDD', () => {
       beforeEach(async () => {
-        // await wrapper.setData({
-        //   selected: 'send',
-        // })
         await wrapper.findAll('input[type="radio"]').at(0).setChecked()
       })
 
@@ -78,15 +75,18 @@ describe('TransactionForm', () => {
         beforeEach(() => {
           wrapper.setProps({ balance: 100.0 })
         })
+
         describe('transaction form show because balance 100,0 GDD', () => {
           it('has no warning message ', () => {
             expect(wrapper.find('.errors').exists()).toBe(false)
           })
+
           it('has a reset button', () => {
             expect(wrapper.find('.test-buttons').findAll('button').at(0).attributes('type')).toBe(
               'reset',
             )
           })
+
           it('has a submit button', () => {
             expect(wrapper.find('.test-buttons').findAll('button').at(1).attributes('type')).toBe(
               'submit',
@@ -121,6 +121,12 @@ describe('TransactionForm', () => {
             expect(wrapper.find('span.errors').text()).toBe('validations.messages.email')
           })
 
+          it('flushes an error message when email is the email of logged in user', async () => {
+            await wrapper.find('#input-group-1').find('input').setValue('user@example.org')
+            await flushPromises()
+            expect(wrapper.find('span.errors').text()).toBe('form.validation.is-not')
+          })
+
           it('trims the email after blur', async () => {
             await wrapper.find('#input-group-1').find('input').setValue('  valid@email.com  ')
             await wrapper.find('#input-group-1').find('input').trigger('blur')
@@ -195,6 +201,41 @@ describe('TransactionForm', () => {
             expect(wrapper.find('span.errors').text()).toBe('validations.messages.min')
           })
 
+          it('flushes an error message when memo is more than 255 characters', async () => {
+            await wrapper.find('#input-group-3').find('textarea').setValue(`
+Es ist ein König in Thule, der trinkt
+Champagner, es geht ihm nichts drüber;
+Und wenn er seinen Champagner trinkt,
+Dann gehen die Augen ihm über.
+
+Die Ritter sitzen um ihn her,
+Die ganze Historische Schule;
+Ihm aber wird die Zunge schwer,
+Es lallt der König von Thule:
+
+„Als Alexander, der Griechenheld,
+Mit seinem kleinen Haufen
+Erobert hatte die ganze Welt,
+Da gab er sich ans Saufen.
+
+Ihn hatten so durstig gemacht der Krieg
+Und die Schlachten, die er geschlagen;
+Er soff sich zu Tode nach dem Sieg,
+Er konnte nicht viel vertragen.
+
+Ich aber bin ein stärkerer Mann
+Und habe mich klüger besonnen:
+Wie jener endete, fang ich an,
+Ich hab mit dem Trinken begonnen.
+
+Im Rausche wird der Heldenzug
+Mir später weit besser gelingen;
+Dann werde ich, taumelnd von Krug zu Krug,
+Die ganze Welt bezwingen.“`)
+            await flushPromises()
+            expect(wrapper.find('span.errors').text()).toBe('validations.messages.max')
+          })
+
           it('flushes no error message when memo is valid', async () => {
             await wrapper.find('#input-group-3').find('textarea').setValue('Long enough')
             await flushPromises()
diff --git a/frontend/src/components/GddSend/TransactionForm.vue b/frontend/src/components/GddSend/TransactionForm.vue
index 4ffc0d3fc..5e683d132 100644
--- a/frontend/src/components/GddSend/TransactionForm.vue
+++ b/frontend/src/components/GddSend/TransactionForm.vue
@@ -99,7 +99,7 @@
                 :rules="{
                   required: true,
                   min: 5,
-                  max: 150,
+                  max: 255,
                 }"
                 :name="$t('form.message')"
                 v-slot="{ errors }"
diff --git a/frontend/src/components/TransactionRows/AmountAndNameRow.vue b/frontend/src/components/TransactionRows/AmountAndNameRow.vue
index be71b57f6..322ad7dfa 100644
--- a/frontend/src/components/TransactionRows/AmountAndNameRow.vue
+++ b/frontend/src/components/TransactionRows/AmountAndNameRow.vue
@@ -10,9 +10,20 @@
       </b-col>
       <b-col cols="7">
         <div class="gdd-transaction-list-item-name">
-          <b-link v-if="linkedUser && linkedUser.email" @click.stop="tunnelEmail">
-            {{ itemText }}
-          </b-link>
+          <div v-if="linkedUser && linkedUser.email">
+            <b-link @click.stop="tunnelEmail">
+              {{ itemText }}
+            </b-link>
+            <span v-if="transactionLinkId">
+              {{ $t('via_link') }}
+              <b-icon
+                icon="link45deg"
+                variant="muted"
+                class="m-mb-1"
+                :title="$t('gdd_per_link.redeemed-title')"
+              />
+            </span>
+          </div>
           <span v-else>{{ itemText }}</span>
         </div>
       </b-col>
@@ -35,6 +46,11 @@ export default {
       type: String,
       required: false,
     },
+    transactionLinkId: {
+      type: Number,
+      required: false,
+      default: null,
+    },
   },
   methods: {
     tunnelEmail() {
diff --git a/frontend/src/components/Transactions/TransactionReceive.vue b/frontend/src/components/Transactions/TransactionReceive.vue
index d1947a91a..f83c84e53 100644
--- a/frontend/src/components/Transactions/TransactionReceive.vue
+++ b/frontend/src/components/Transactions/TransactionReceive.vue
@@ -13,7 +13,12 @@
 
           <b-col cols="11">
             <!-- Amount / Name || Text -->
-            <amount-and-name-row :amount="amount" :linkedUser="linkedUser" v-on="$listeners" />
+            <amount-and-name-row
+              v-on="$listeners"
+              :amount="amount"
+              :linkedUser="linkedUser"
+              :transactionLinkId="transactionLinkId"
+            />
 
             <!-- Nachricht Memo -->
             <memo-row :memo="memo" />
@@ -86,6 +91,10 @@ export default {
       type: Date,
       required: true,
     },
+    transactionLinkId: {
+      type: Number,
+      required: false,
+    },
   },
   data() {
     return {
diff --git a/frontend/src/components/Transactions/TransactionSend.vue b/frontend/src/components/Transactions/TransactionSend.vue
index dfe50225a..2f9ef54d2 100644
--- a/frontend/src/components/Transactions/TransactionSend.vue
+++ b/frontend/src/components/Transactions/TransactionSend.vue
@@ -13,7 +13,12 @@
 
           <b-col cols="11">
             <!-- Amount / Name  -->
-            <amount-and-name-row :amount="amount" :linkedUser="linkedUser" v-on="$listeners" />
+            <amount-and-name-row
+              v-on="$listeners"
+              :amount="amount"
+              :linkedUser="linkedUser"
+              :transactionLinkId="transactionLinkId"
+            />
 
             <!-- Memo -->
             <memo-row :memo="memo" />
@@ -87,6 +92,10 @@ export default {
       type: Date,
       required: true,
     },
+    transactionLinkId: {
+      type: Number,
+      required: false,
+    },
   },
   data() {
     return {
diff --git a/frontend/src/graphql/queries.js b/frontend/src/graphql/queries.js
index 60b929c6d..e47da0fea 100644
--- a/frontend/src/graphql/queries.js
+++ b/frontend/src/graphql/queries.js
@@ -70,6 +70,7 @@ export const transactionsQuery = gql`
         linkedUser {
           email
         }
+        transactionLinkId
       }
     }
   }
diff --git a/frontend/src/locales/de.json b/frontend/src/locales/de.json
index adbde7a01..e8994a2e9 100644
--- a/frontend/src/locales/de.json
+++ b/frontend/src/locales/de.json
@@ -115,6 +115,7 @@
     "redeem-text": "Willst du den Betrag jetzt einlösen?",
     "redeemed": "Erfolgreich eingelöst! Deinem Konto wurden {n} GDD gutgeschrieben.",
     "redeemed-at": "Der Link wurde bereits am {date} eingelöst.",
+    "redeemed-title": "eingelöst",
     "to-login": "Log dich ein",
     "to-register": "Registriere ein neues Konto",
     "valid_until": "Gültig bis"
@@ -249,5 +250,6 @@
   },
   "transaction-link": {
     "send_you": "sendet dir"
-  }
+  },
+  "via_link": "über einen Link"
 }
diff --git a/frontend/src/locales/en.json b/frontend/src/locales/en.json
index 8d4665871..c586bbe46 100644
--- a/frontend/src/locales/en.json
+++ b/frontend/src/locales/en.json
@@ -115,6 +115,7 @@
     "redeem-text": "Do you want to redeem the amount now?",
     "redeemed": "Successfully redeemed! Your account has been credited with {n} GDD.",
     "redeemed-at": "The link was already redeemed on {date}.",
+    "redeemed-title": "redeemed",
     "to-login": "Log in",
     "to-register": "Register a new account",
     "valid_until": "Valid until"
@@ -249,5 +250,6 @@
   },
   "transaction-link": {
     "send_you": "wants to send you"
-  }
+  },
+  "via_link": "via Link"
 }