diff --git a/package.json b/package.json
index 44d1d91..9e4523e 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,8 @@
     "react-dom": "18.2.0",
     "react-gtm-module": "^2.0.11",
     "react-loader-spinner": "^5.3.4",
-    "swiper": "^8.3.2"
+    "swiper": "^8.3.2",
+    "zod": "^3.19.1"
   },
   "devDependencies": {
     "@types/google-spreadsheet": "^3.3.0",
diff --git a/src/pages/api/mail/contact.ts b/src/pages/api/mail/contact.ts
index 8f93073..c010ce2 100644
--- a/src/pages/api/mail/contact.ts
+++ b/src/pages/api/mail/contact.ts
@@ -1,112 +1,108 @@
 import type { NextApiRequest, NextApiResponse } from 'next'
 import { mailingClient } from '@/api/mailingClient'
 import { appendSpreadsheet } from '@/api/gSheets'
-
-interface ContactFormNextApiRequest extends NextApiRequest {
-  body: {
-    firstName: string
-    email: string
-    projectName: string
-    projectDescription: string
-    services: string[]
-    budget: string
-    deadline: string
-    discord: string | undefined
-    telegram: string | undefined
-    github: string | undefined
-    projectLink: string | undefined
-    aditionalInformation: string | undefined
-  }
-}
+import { Submit, SubmitSchema } from '@/types/submit'
 
 export default async function serverSideCall(
-  req: ContactFormNextApiRequest,
+  req: NextApiRequest,
   res: NextApiResponse
 ) {
   if (req.method !== 'POST') {
     res.status(405)
   } else {
-    const {
-      firstName,
-      email,
-      projectName,
-      projectDescription,
-      services,
-      budget,
-      deadline,
-      discord,
-      telegram,
-      github,
-      projectLink,
-      aditionalInformation,
-    } = req.body
-    const aditionalInformationHeader =
-      discord || telegram || github || projectLink || aditionalInformation
-        ? 'Aditional information'
-        : ''
-    const discordHandle = discord ? `Discord handle: ${discord}` : ''
-    const telegramHandle = telegram ? `Telegram handle: ${telegram}` : ''
-    const githubHandle = github ? `Github Profile: ${github}` : ''
-    const projectLinkText = projectLink ? `Project Link: ${projectLink}` : ''
-    const aditionalInformationText = aditionalInformation
-      ? `Additional Information given by the client: ${aditionalInformation}`
-      : ''
-    const mailData = {
-      from: process.env.GMAIL_ACCOUNT as string,
-      to: process.env.EMAIL_RECIPIENT as string,
-      subject: `Project Request from: ${firstName} | ${projectName}`,
-      text: `Who requested: 
-      First Name: ${firstName} 
-      E-mail: ${email}
-      Project Name: ${projectName}
-      Project Description: ${projectDescription}
-      Type of services: ${services}
-      Budget Range: ${budget}
-      Deadline(yyyy-mm-dd): ${deadline}
+    const submitData: Submit = req.body
+    const { success } = SubmitSchema.safeParse(submitData)
+    if (success) {
+      const {
+        firstName,
+        email,
+        projectName,
+        projectDescription,
+        services,
+        budget,
+        deadline,
+        discord,
+        telegram,
+        github,
+        projectLink,
+        aditionalInformation,
+      } = submitData
 
-      ${aditionalInformationHeader}
-      ${discordHandle}
-      ${telegramHandle}
-      ${githubHandle}
-      ${projectLinkText}
-      ${aditionalInformationText}
-      `,
-    }
-    const date = new Date()
-    const sheetsData = {
-      timeStamp: date.toUTCString(),
-      whoRequested: firstName,
-      emailContact: email,
-      projectName: projectName,
-      projectDescription: projectDescription,
-      typeOfServices: services.toString(),
-      budgetRange: budget,
-      deadline: deadline,
-      discordHandle: discord ? discord : '',
-      githubHandle: github ? github : '',
-      telegramHandle: telegram ? telegram : '',
-      projectLink: projectLink ? projectLink : '',
-      aditionalInformationText: aditionalInformation ? aditionalInformation : ''
-    }
-    try {
-      mailingClient.sendMail(mailData, (err) => {
-        if (err) {
-          console.log(err)
-          res.status(500).json({
-            success: false,
-            body: err,
-          })
-        } else {
-          res.status(200).json({
-            success: true,
-          })
-        }
-      })
-      appendSpreadsheet(sheetsData)
-    } catch (err) {
-      console.log(err)
-      res.status(400).json({
+      const aditionalInformationHeader =
+        discord || telegram || github || projectLink || aditionalInformation
+          ? 'Aditional information'
+          : ''
+      const discordHandle = discord ? `Discord handle: ${discord}` : ''
+      const telegramHandle = telegram ? `Telegram handle: ${telegram}` : ''
+      const githubHandle = github ? `Github Profile: ${github}` : ''
+      const projectLinkText = projectLink ? `Project Link: ${projectLink}` : ''
+      const aditionalInformationText = aditionalInformation
+        ? `Additional Information given by the client: ${aditionalInformation}`
+        : ''
+      const mailData = {
+        from: process.env.GMAIL_ACCOUNT as string,
+        to: process.env.EMAIL_RECIPIENT as string,
+        subject: `Project Request from: ${firstName} | ${projectName}`,
+        text: `Who requested:
+         First Name: ${firstName}
+         E-mail: ${email}
+         Project Name: ${projectName}
+         Project Description: ${projectDescription}
+         Type of services: ${services}
+         Budget Range: ${budget}
+         Deadline(yyyy-mm-dd): ${deadline}
+  
+         ${aditionalInformationHeader}
+         ${discordHandle}
+         ${telegramHandle}
+         ${githubHandle}
+         ${projectLinkText}
+         ${aditionalInformationText}
+         `,
+      }
+      const date = new Date()
+      const sheetsData = {
+        timeStamp: date.toUTCString(),
+        whoRequested: firstName,
+        emailContact: email,
+        projectName: projectName,
+        projectDescription: projectDescription,
+        typeOfServices: services.toString(),
+        budgetRange: budget,
+        deadline: deadline,
+        discordHandle: discord ? discord : '',
+        githubHandle: github ? github : '',
+        telegramHandle: telegram ? telegram : '',
+        projectLink: projectLink ? projectLink : '',
+        aditionalInformationText: aditionalInformation
+          ? aditionalInformation
+          : '',
+      }
+      try {
+        mailingClient.sendMail(mailData, (err) => {
+          if (err) {
+            console.log(err)
+            res.status(500).json({
+              success: false,
+              body: err,
+            })
+          } else {
+            res.status(200).json({
+              success: true,
+            })
+          }
+        })
+        appendSpreadsheet(sheetsData)
+      } catch (err) {
+        console.log(err)
+        res.status(400).json({
+          success: false,
+        })
+      }
+    } else {
+      res.status(422).json({
         success: false,
+        message: 'Invalid body format',
       })
     }
   }
diff --git a/src/types/submit.ts b/src/types/submit.ts
new file mode 100644
index 0000000..44f4f79
--- /dev/null
+++ b/src/types/submit.ts
@@ -0,0 +1,21 @@
+import { z } from 'zod'
+
+const nonEmptyStringContraint = z.string().min(1)
+const EmptyStringContraint = z.string()
+
+export const SubmitSchema = z.object({
+  firstName: nonEmptyStringContraint,
+  email: nonEmptyStringContraint,
+  projectName: nonEmptyStringContraint,
+  projectDescription: nonEmptyStringContraint,
+  services: z.array(nonEmptyStringContraint),
+  budget: nonEmptyStringContraint,
+  deadline: nonEmptyStringContraint,
+  discord: EmptyStringContraint,
+  telegram: EmptyStringContraint,
+  github: EmptyStringContraint,
+  projectLink: EmptyStringContraint,
+  aditionalInformation: EmptyStringContraint,
+})
+
+export type Submit = z.infer<typeof SubmitSchema>
diff --git a/yarn.lock b/yarn.lock
index 1ef5da2..14e1e83 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3246,3 +3246,8 @@ yoga-wasm-web@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/yoga-wasm-web/-/yoga-wasm-web-0.1.2.tgz#05d3fc9cbdfd57ac9682debb5001aca075489a39"
   integrity sha512-8SkgawHcA0RUbMrnhxbaQkZDBi8rMed8pQHixkFF9w32zGhAwZ9/cOHWlpYfr6RCx42Yp3siV45/jPEkJxsk6w==
+
+zod@^3.19.1:
+  version "3.19.1"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-3.19.1.tgz#112f074a97b50bfc4772d4ad1576814bd8ac4473"
+  integrity sha512-LYjZsEDhCdYET9ikFu6dVPGp2YH9DegXjdJToSzD9rO6fy4qiRYFoyEYwps88OseJlPyl2NOe2iJuhEhL7IpEA==