diff --git a/backend/src/graphql/resolver/TransactionResolver.ts b/backend/src/graphql/resolver/TransactionResolver.ts
index 40c836b1b..871e1b9d6 100644
--- a/backend/src/graphql/resolver/TransactionResolver.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.ts
@@ -6,7 +6,7 @@ import { Resolver, Query, Args, Authorized, Ctx, Mutation } from 'type-graphql'
 import { getCustomRepository, getConnection, QueryRunner } from 'typeorm'
 
 import CONFIG from '../../config'
-import { sendEMail } from '../../mailer/sendEMail'
+import { sendTransactionReceivedEmail } from '../../mailer/sendTransactionReceivedEmail'
 
 import { Transaction } from '../model/Transaction'
 import { TransactionList } from '../model/TransactionList'
@@ -651,20 +651,14 @@ export class TransactionResolver {
     }
     // send notification email
     // TODO: translate
-    await sendEMail({
-      to: `${recipiantUser.firstName} ${recipiantUser.lastName} <${recipiantUser.email}>`,
-      subject: 'Gradido Überweisung',
-      text: `Hallo ${recipiantUser.firstName} ${recipiantUser.lastName}
-      
-      Du hast soeben ${amount} GDD von ${senderUser.firstName} ${senderUser.lastName} erhalten.
-      ${senderUser.firstName} ${senderUser.lastName} schreibt:
-      
-      ${memo}
-      
-      Bitte antworte nicht auf diese E-Mail!
-      
-      Mit freundlichen Grüßen,
-      dein Gradido-Team`,
+    await sendTransactionReceivedEmail({
+      senderFirstName: senderUser.firstName,
+      senderLastName: senderUser.lastName,
+      recipientFirstName: recipiantUser.firstName,
+      recipientLastName: recipiantUser.lastName,
+      email: recipiantUser.email,
+      amount,
+      memo,
     })
 
     return 'success'
diff --git a/backend/src/mailer/sendTransactionReceivedEmail.test.ts b/backend/src/mailer/sendTransactionReceivedEmail.test.ts
new file mode 100644
index 000000000..7b4080622
--- /dev/null
+++ b/backend/src/mailer/sendTransactionReceivedEmail.test.ts
@@ -0,0 +1,35 @@
+import { sendTransactionReceivedEmail } from './sendTransactionReceivedEmail'
+import { sendEMail } from './sendEMail'
+
+jest.mock('./sendEMail', () => {
+  return {
+    __esModule: true,
+    sendEMail: jest.fn(),
+  }
+})
+
+describe('sendTransactionReceivedEmail', () => {
+  beforeEach(async () => {
+    await sendTransactionReceivedEmail({
+      senderFirstName: 'Bibi',
+      senderLastName: 'Bloxberg',
+      recipientFirstName: 'Peter',
+      recipientLastName: 'Lustig',
+      email: 'peter@lustig.de',
+      amount: 42.0,
+      memo: 'Vielen herzlichen Dank für den neuen Hexenbesen!',
+    })
+  })
+
+  it('calls sendEMail', () => {
+    expect(sendEMail).toBeCalledWith({
+      to: `Peter Lustig <peter@lustig.de>`,
+      subject: 'Gradido Überweisung',
+      text:
+        expect.stringContaining('Hallo Peter Lustig') &&
+        expect.stringContaining('42,00') &&
+        expect.stringContaining('Bibi Bloxberg') &&
+        expect.stringContaining('Vielen herzlichen Dank für den neuen Hexenbesen!'),
+    })
+  })
+})
diff --git a/backend/src/mailer/sendTransactionReceivedEmail.ts b/backend/src/mailer/sendTransactionReceivedEmail.ts
new file mode 100644
index 000000000..51f8ef45c
--- /dev/null
+++ b/backend/src/mailer/sendTransactionReceivedEmail.ts
@@ -0,0 +1,29 @@
+import { sendEMail } from './sendEMail'
+
+export const sendTransactionReceivedEmail = (data: {
+  senderFirstName: string
+  senderLastName: string
+  recipientFirstName: string
+  recipientLastName: string
+  email: string
+  amount: number
+  memo: string
+}): Promise<boolean> => {
+  return sendEMail({
+    to: `${data.recipientFirstName} ${data.recipientLastName} <${data.email}>`,
+    subject: 'Gradido Überweisung',
+    text: `Hallo ${data.recipientFirstName} ${data.recipientLastName}
+
+Du hast soeben ${data.amount.toFixed(2).replace('.', ',')} GDD von ${data.senderFirstName} ${
+      data.senderLastName
+    } erhalten.
+${data.senderFirstName} ${data.senderLastName} schreibt:
+
+${data.memo}
+
+Bitte antworte nicht auf diese E-Mail!
+
+Mit freundlichen Grüßen,
+dein Gradido-Team`,
+  })
+}