diff --git a/backend/src/emails/sendEmailVariants.test.ts b/backend/src/emails/sendEmailVariants.test.ts
index 017efc270..698ba32d9 100644
--- a/backend/src/emails/sendEmailVariants.test.ts
+++ b/backend/src/emails/sendEmailVariants.test.ts
@@ -17,7 +17,8 @@ jest.mock('./sendEmailTranslated', () => {
 })
 
 describe('sendEmailVariants', () => {
-  let result: Record<string, unknown> | null
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let result: any
 
   describe('sendAccountActivationEmail', () => {
     beforeAll(async () => {
@@ -27,7 +28,7 @@ describe('sendEmailVariants', () => {
         email: 'peter@lustig.de',
         language: 'en',
         activationLink: 'http://localhost/checkEmail/6627633878930542284',
-        timeDurationObject: { hours: 24, minutes: 0 },
+        timeDurationObject: { hours: 23, minutes: 30 },
       })
     })
 
@@ -43,7 +44,7 @@ describe('sendEmailVariants', () => {
             lastName: 'Lustig',
             locale: 'en',
             activationLink: 'http://localhost/checkEmail/6627633878930542284',
-            timeDurationObject: { hours: 24, minutes: 0 },
+            timeDurationObject: { hours: 23, minutes: 30 },
             resendLink: CONFIG.EMAIL_LINK_FORGOTPASSWORD,
           },
         })
@@ -61,29 +62,32 @@ describe('sendEmailVariants', () => {
             from: 'Gradido (nicht antworten) <info@gradido.net>',
             attachments: [],
             subject: 'Gradido: Email Verification',
-            html:
-              expect.stringContaining('<title>Gradido: Email Verification</title>') &&
-              expect.stringContaining('>Gradido: Email Verification</h1>') &&
-              expect.stringContaining(
-                'Your email address has just been registered with Gradido.',
-              ) &&
-              expect.stringContaining(
-                'Please click on this link to complete the registration and activate your Gradido account:',
-              ) &&
-              expect.stringContaining(
-                '<a href="http://localhost/checkEmail/6627633878930542284">http://localhost/checkEmail/6627633878930542284</a>',
-              ) &&
-              expect.stringContaining('or copy the link above into your browser window.') &&
-              expect.stringContaining(
-                'The link has a validity of {hours} hours and {minutes} minutes. If the validity of the link has already expired, you can have a new link sent to you here by entering your email address:',
-              ) &&
-              expect.stringContaining(
-                `<a href="${CONFIG.EMAIL_LINK_FORGOTPASSWORD}">${CONFIG.EMAIL_LINK_FORGOTPASSWORD}</a>`,
-              ) &&
-              expect.stringContaining('Sincerely yours,<br><span>your Gradido team'),
+            html: expect.any(String),
             text: expect.stringContaining('GRADIDO: EMAIL VERIFICATION'),
           }),
         })
+        expect(result.originalMessage.html).toContain('<title>Gradido: Email Verification</title>')
+        expect(result.originalMessage.html).toContain('>Gradido: Email Verification</h1>')
+        expect(result.originalMessage.html).toContain('Hello Peter Lustig')
+        expect(result.originalMessage.html).toContain(
+          'Your email address has just been registered with Gradido.',
+        )
+        expect(result.originalMessage.html).toContain(
+          'Please click on this link to complete the registration and activate your Gradido account:',
+        )
+        expect(result.originalMessage.html).toContain(
+          '<a href="http://localhost/checkEmail/6627633878930542284">http://localhost/checkEmail/6627633878930542284</a>',
+        )
+        expect(result.originalMessage.html).toContain(
+          'or copy the link above into your browser window.',
+        )
+        expect(result.originalMessage.html).toContain(
+          'The link has a validity of 23 hours and 30 minutes. If the validity of the link has already expired, you can have a new link sent to you here by entering your email address:',
+        )
+        expect(result.originalMessage.html).toContain(
+          `<a href="${CONFIG.EMAIL_LINK_FORGOTPASSWORD}">${CONFIG.EMAIL_LINK_FORGOTPASSWORD}</a>`,
+        )
+        expect(result.originalMessage.html).toContain('Sincerely yours,<br><span>your Gradido team')
       })
     })
   })
@@ -126,31 +130,36 @@ describe('sendEmailVariants', () => {
             from: 'Gradido (nicht antworten) <info@gradido.net>',
             attachments: [],
             subject: 'Gradido: Try To Register Again With Your Email',
-            html:
-              expect.stringContaining(
-                '<title>Gradido: Try To Register Again With Your Email</title>',
-              ) &&
-              expect.stringContaining('>Gradido: Try To Register Again With Your Email</h1>') &&
-              expect.stringContaining(
-                'Your email address has just been used again to register an account with Gradido.',
-              ) &&
-              expect.stringContaining(
-                'However, an account already exists for your email address.',
-              ) &&
-              expect.stringContaining(
-                'Please click on the following link if you have forgotten your password:',
-              ) &&
-              expect.stringContaining(
-                `<a href="${CONFIG.EMAIL_LINK_FORGOTPASSWORD}">${CONFIG.EMAIL_LINK_FORGOTPASSWORD}</a>`,
-              ) &&
-              expect.stringContaining('or copy the link above into your browser window.') &&
-              expect.stringContaining(
-                'If you are not the one who tried to register again, please contact our support:',
-              ) &&
-              expect.stringContaining('Sincerely yours,<br><span>your Gradido team'),
+            html: expect.any(String),
             text: expect.stringContaining('GRADIDO: TRY TO REGISTER AGAIN WITH YOUR EMAIL'),
           }),
         })
+        expect(result.originalMessage.html).toContain(
+          '<title>Gradido: Try To Register Again With Your Email</title>',
+        )
+        expect(result.originalMessage.html).toContain(
+          '>Gradido: Try To Register Again With Your Email</h1>',
+        )
+        expect(result.originalMessage.html).toContain('Hello Peter Lustig')
+        expect(result.originalMessage.html).toContain(
+          'Your email address has just been used again to register an account with Gradido.',
+        )
+        expect(result.originalMessage.html).toContain(
+          'However, an account already exists for your email address.',
+        )
+        expect(result.originalMessage.html).toContain(
+          'Please click on the following link if you have forgotten your password:',
+        )
+        expect(result.originalMessage.html).toContain(
+          `<a href="${CONFIG.EMAIL_LINK_FORGOTPASSWORD}">${CONFIG.EMAIL_LINK_FORGOTPASSWORD}</a>`,
+        )
+        expect(result.originalMessage.html).toContain(
+          'or copy the link above into your browser window.',
+        )
+        expect(result.originalMessage.html).toContain(
+          'If you are not the one who tried to register again, please contact our support:',
+        )
+        expect(result.originalMessage.html).toContain('Sincerely yours,<br><span>your Gradido team')
       })
     })
   })