diff --git a/Controllers/NotificationsController.cs b/Controllers/NotificationsController.cs
index d842ae2..baa4f1c 100644
--- a/Controllers/NotificationsController.cs
+++ b/Controllers/NotificationsController.cs
@@ -1,5 +1,7 @@
+using ClosedXML.Excel;
 using line_gestao_api.Data;
 using line_gestao_api.Dtos;
+using line_gestao_api.Models;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
@@ -68,4 +70,138 @@ public class NotificationsController : ControllerBase
         return NoContent();
     }
 
+    [HttpPatch("read-all")]
+    [HttpPatch("/notifications/read-all")]
+    public async Task<IActionResult> MarkAllAsRead([FromQuery] string? filter)
+    {
+        var utcNow = DateTime.UtcNow;
+        var query = ApplyFilter(_db.Notifications, filter)
+            .Where(n => !n.Lida);
+
+        await query.ExecuteUpdateAsync(updates => updates
+            .SetProperty(n => n.Lida, true)
+            .SetProperty(n => n.LidaEm, utcNow));
+
+        return NoContent();
+    }
+
+    [HttpGet("export")]
+    [HttpGet("/notifications/export")]
+    public async Task<IActionResult> ExportNotifications([FromQuery] string? filter)
+    {
+        var query = ApplyFilter(_db.Notifications.AsNoTracking(), filter);
+
+        var rows = await (
+            from notification in query
+            join vigencia in _db.VigenciaLines.AsNoTracking()
+                on notification.VigenciaLineId equals vigencia.Id into vigencias
+            from vigencia in vigencias.DefaultIfEmpty()
+            orderby notification.ReferenciaData descending, notification.Data descending
+            select new NotificationExportRow(
+                vigencia == null ? null : vigencia.Item,
+                vigencia == null ? null : vigencia.Conta,
+                vigencia == null ? null : vigencia.Linha,
+                vigencia == null ? null : vigencia.Cliente,
+                vigencia == null ? null : vigencia.Usuario,
+                vigencia == null ? null : vigencia.PlanoContrato,
+                vigencia == null ? null : vigencia.DtEfetivacaoServico,
+                vigencia == null ? null : vigencia.DtTerminoFidelizacao,
+                vigencia == null ? null : vigencia.Total,
+                notification.Tipo))
+            .ToListAsync();
+
+        using var workbook = new XLWorkbook();
+        var worksheet = workbook.Worksheets.Add("Notificacoes");
+
+        var headers = new[]
+        {
+            "Item (ID)",
+            "Conta",
+            "Linha",
+            "Cliente",
+            "Usuário",
+            "Plano Contrato",
+            "DT. DE EFETIVAÇÃO DO SERVIÇO",
+            "DT. DE TÉRMINO DA FIDELIZAÇÃO",
+            "TOTAL",
+            "Status"
+        };
+
+        for (var i = 0; i < headers.Length; i++)
+        {
+            worksheet.Cell(1, i + 1).Value = headers[i];
+        }
+
+        var headerRange = worksheet.Range(1, 1, 1, headers.Length);
+        headerRange.Style.Font.Bold = true;
+        headerRange.Style.Fill.BackgroundColor = XLColor.LightGray;
+        headerRange.Style.Alignment.Horizontal = XLAlignmentHorizontalValues.Center;
+
+        for (var i = 0; i < rows.Count; i++)
+        {
+            var row = rows[i];
+            var rowIndex = i + 2;
+            worksheet.Cell(rowIndex, 1).Value = row.Item;
+            worksheet.Cell(rowIndex, 2).Value = row.Conta ?? string.Empty;
+            worksheet.Cell(rowIndex, 3).Value = row.Linha ?? string.Empty;
+            worksheet.Cell(rowIndex, 4).Value = row.Cliente ?? string.Empty;
+            worksheet.Cell(rowIndex, 5).Value = row.Usuario ?? string.Empty;
+            worksheet.Cell(rowIndex, 6).Value = row.PlanoContrato ?? string.Empty;
+            worksheet.Cell(rowIndex, 7).Value = row.DtEfetivacaoServico;
+            worksheet.Cell(rowIndex, 8).Value = row.DtTerminoFidelizacao;
+            worksheet.Cell(rowIndex, 9).Value = row.Total;
+            worksheet.Cell(rowIndex, 10).Value = row.Tipo;
+        }
+
+        worksheet.Column(1).Width = 12;
+        worksheet.Column(2).Width = 18;
+        worksheet.Column(3).Width = 18;
+        worksheet.Column(4).Width = 22;
+        worksheet.Column(5).Width = 22;
+        worksheet.Column(6).Width = 20;
+        worksheet.Column(7).Width = 22;
+        worksheet.Column(8).Width = 24;
+        worksheet.Column(9).Width = 14;
+        worksheet.Column(10).Width = 14;
+
+        worksheet.Column(7).Style.DateFormat.Format = "dd/MM/yyyy";
+        worksheet.Column(8).Style.DateFormat.Format = "dd/MM/yyyy";
+        worksheet.Column(9).Style.NumberFormat.Format = "#,##0.00";
+
+        worksheet.Columns().AdjustToContents();
+
+        using var stream = new MemoryStream();
+        workbook.SaveAs(stream);
+        stream.Position = 0;
+
+        var fileName = $"notificacoes-{DateTime.UtcNow:yyyyMMddHHmmss}.xlsx";
+        return File(
+            stream.ToArray(),
+            "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+            fileName);
+    }
+
+    private static IQueryable<Notification> ApplyFilter(IQueryable<Notification> query, string? filter)
+    {
+        var normalized = filter?.Trim().ToLowerInvariant();
+        return normalized switch
+        {
+            "a-vencer" or "avencer" => query.Where(n => n.Tipo == "AVencer"),
+            "vencidas" or "vencido" => query.Where(n => n.Tipo == "Vencido"),
+            _ => query
+        };
+    }
+
+    private sealed record NotificationExportRow(
+        int? Item,
+        string? Conta,
+        string? Linha,
+        string? Cliente,
+        string? Usuario,
+        string? PlanoContrato,
+        DateTime? DtEfetivacaoServico,
+        DateTime? DtTerminoFidelizacao,
+        decimal? Total,
+        string Tipo);
+
 }