diff --git a/app/api/courrier/send/route.ts b/app/api/courrier/send/route.ts
new file mode 100644
index 00000000..494c52c0
--- /dev/null
+++ b/app/api/courrier/send/route.ts
@@ -0,0 +1,81 @@
+import { NextResponse } from 'next/server';
+import { getServerSession } from 'next-auth';
+import { authOptions } from '@/app/api/auth/[...nextauth]/route';
+import { prisma } from '@/lib/prisma';
+import nodemailer from 'nodemailer';
+
+export async function POST(request: Request) {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session?.user?.id) {
+      return NextResponse.json(
+        { error: 'Unauthorized' },
+        { status: 401 }
+      );
+    }
+
+    // Get credentials from database
+    const credentials = await prisma.mailCredentials.findUnique({
+      where: {
+        userId: session.user.id
+      }
+    });
+
+    if (!credentials) {
+      return NextResponse.json(
+        { error: 'No mail credentials found. Please configure your email account.' },
+        { status: 401 }
+      );
+    }
+
+    // Get the email data from the request
+    const { to, cc, bcc, subject, body, attachments } = await request.json();
+
+    if (!to) {
+      return NextResponse.json(
+        { error: 'Recipient is required' },
+        { status: 400 }
+      );
+    }
+
+    // Create SMTP transporter
+    const transporter = nodemailer.createTransport({
+      host: credentials.host,
+      port: credentials.port,
+      secure: true,
+      auth: {
+        user: credentials.email,
+        pass: credentials.password,
+      },
+      tls: {
+        rejectUnauthorized: false
+      }
+    });
+
+    // Prepare email options
+    const mailOptions = {
+      from: credentials.email,
+      to: to,
+      cc: cc || undefined,
+      bcc: bcc || undefined,
+      subject: subject || '(No subject)',
+      html: body,
+      attachments: attachments?.map((file: any) => ({
+        filename: file.name,
+        content: file.content,
+        contentType: file.type
+      })) || []
+    };
+
+    // Send the email
+    await transporter.sendMail(mailOptions);
+
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error('Error sending email:', error);
+    return NextResponse.json(
+      { error: 'Failed to send email' },
+      { status: 500 }
+    );
+  }
+} 
\ No newline at end of file
diff --git a/lib/imap.ts b/lib/imap.ts
index 84fd2f6b..1f15788e 100644
--- a/lib/imap.ts
+++ b/lib/imap.ts
@@ -19,7 +19,7 @@ export async function getImapClient() {
     throw new Error('No mail credentials found. Please configure your email account.');
   }
 
-  const client = new ImapFlow({
+  return new ImapFlow({
     host: credentials.host,
     port: credentials.port,
     secure: true,
@@ -32,9 +32,6 @@ export async function getImapClient() {
       rejectUnauthorized: false
     }
   });
-
-  await client.connect();
-  return client;
 }
 
 export async function moveEmails(emailIds: number[], targetFolder: string) {
@@ -44,7 +41,8 @@ export async function moveEmails(emailIds: number[], targetFolder: string) {
     for (const id of emailIds) {
       const message = await imap.fetchOne(id.toString(), { uid: true });
       if (message) {
-        await imap.messageMove(message.uid, targetFolder);
+        const uid = typeof message.uid === 'number' ? message.uid.toString() : message.uid;
+        await imap.messageMove(uid, targetFolder);
       }
     }
   } finally {
@@ -52,17 +50,24 @@ export async function moveEmails(emailIds: number[], targetFolder: string) {
   }
 }
 
-export async function markAsRead(emailIds: number[], isRead: boolean) {
+export async function markAsRead(emailIds: (string | number)[], isRead: boolean) {
   const imap = await getImapClient();
-  const lock = await imap.getMailboxLock('INBOX');
   try {
-    for (const id of emailIds) {
-      const message = await imap.fetchOne(id.toString(), { uid: true });
-      if (message) {
-        await imap.messageFlagsAdd(message.uid, isRead ? ['\\Seen'] : [], { uid: true });
+    await imap.connect();
+    const lock = await imap.getMailboxLock('INBOX');
+    try {
+      for (const id of emailIds) {
+        const stringId = typeof id === 'number' ? id.toString() : id;
+        const message = await imap.fetchOne(stringId, { uid: true });
+        if (message) {
+          const uid = typeof message.uid === 'number' ? message.uid.toString() : message.uid;
+          await imap.messageFlagsAdd(uid, isRead ? ['\\Seen'] : [], { uid: true });
+        }
       }
+    } finally {
+      lock.release();
     }
   } finally {
-    lock.release();
+    await imap.logout();
   }
 } 
\ No newline at end of file