diff --git a/app/Jobs/SendEmailTemplateJob.php b/app/Jobs/SendEmailTemplateJob.php
index f877714..8ef8a12 100644
--- a/app/Jobs/SendEmailTemplateJob.php
+++ b/app/Jobs/SendEmailTemplateJob.php
@@ -43,7 +43,6 @@ public function handle(): void
             $result = $sender->sendFromLog($log);
 
             $log->status = EmailLogStatus::Sent;
-            $log->message_id = $result['message_id'] ?? ($log->message_id ?? null);
             $log->sent_at = now();
             $log->duration_ms = (int) round((microtime(true) - $start) * 1000);
             $log->save();
diff --git a/app/Models/EmailLog.php b/app/Models/EmailLog.php
index 1648638..b3ba936 100644
--- a/app/Models/EmailLog.php
+++ b/app/Models/EmailLog.php
@@ -23,9 +23,9 @@ class EmailLog extends Model
         'template_id',
         'mail_profile_id',
         'user_id',
-        'message_id',
         'correlation_id',
         'to_email',
+        'to_recipients',
         'to_name',
         'cc',
         'bcc',
diff --git a/app/Services/AutoMailDispatcher.php b/app/Services/AutoMailDispatcher.php
index c8856a6..e1ec3c5 100644
--- a/app/Services/AutoMailDispatcher.php
+++ b/app/Services/AutoMailDispatcher.php
@@ -12,6 +12,7 @@
 use App\Models\EmailLog;
 use App\Models\EmailLogStatus;
 use App\Models\EmailTemplate;
+use App\Models\MailProfile;
 
 class AutoMailDispatcher
 {
@@ -95,6 +96,8 @@ public function maybeQueue(Activity $activity, bool $sendFlag = true): array
         $log->fill([
             'uuid' => (string) \Str::uuid(),
             'template_id' => $template->id,
+            'mail_profile_id' => optional(MailProfile::query()->where('active', true)->orderBy('priority')->orderBy('id')->first())->id,
+            'user_id' => auth()->id(),
             'to_email' => (string) ($recipients[0] ?? ''),
             'to_recipients' => $recipients,
             'subject' => (string) ($rendered['subject'] ?? $template->subject_template ?? ''),
@@ -107,6 +110,10 @@ public function maybeQueue(Activity $activity, bool $sendFlag = true): array
             'client_case_id' => $clientCase?->id,
             'contract_id' => $contract?->id,
         ]);
+        // If multiple recipients, keep to_email null to avoid implying a single primary recipient
+        if (count($recipients) > 1) {
+            $log->to_email = null;
+        }
         $log->save();
 
         $log->body()->create([
diff --git a/app/Services/EmailSender.php b/app/Services/EmailSender.php
index bd11b46..6ce011a 100644
--- a/app/Services/EmailSender.php
+++ b/app/Services/EmailSender.php
@@ -94,38 +94,75 @@ public function sendFromLog(EmailLog $log): array
             $transport = Transport::fromDsn($dsn);
             $mailer = new SymfonyMailer($transport);
 
-            $fromAddr = (string) ($log->from_email ?: ($profile->from_address ?: ($username ?: (config('mail.from.address') ?? ''))));
+            // Resolve a valid From address without falling back to to_email
+            $fromAddrCandidates = [
+                (string) ($log->from_email ?? ''),
+                (string) ($profile->from_address ?? ''),
+                (string) ($username ?? ''),
+                (string) (config('mail.from.address') ?? ''),
+            ];
+            $fromAddr = '';
+            foreach ($fromAddrCandidates as $cand) {
+                $cand = trim($cand);
+                if ($cand !== '' && filter_var($cand, FILTER_VALIDATE_EMAIL)) {
+                    $fromAddr = $cand;
+                    break;
+                }
+            }
             $fromName = (string) ($log->from_name ?: ($profile->from_name ?: (config('mail.from.name') ?? config('app.name') ?? '')));
 
+            // Fallback From if still empty: use a no-reply at app host
+            if ($fromAddr === '') {
+                $appUrl = (string) (config('app.url') ?? '');
+                $hostPart = '';
+                if ($appUrl !== '') {
+                    $parsed = @parse_url($appUrl);
+                    $hostPart = is_array($parsed) ? (string) ($parsed['host'] ?? '') : '';
+                }
+                $domain = $hostPart !== '' ? $hostPart : 'localhost.localdomain';
+                $fromAddr = 'no-reply@'.$domain;
+            }
+
             // Build email with safe Address instances (Symfony Address does not allow null name)
             $fromAddress = $fromName !== ''
-                ? new Address($fromAddr ?: $log->to_email, $fromName)
-                : new Address($fromAddr ?: $log->to_email);
-            $toAddress = (string) ($log->to_name ?? '') !== ''
-                ? new Address($log->to_email, (string) $log->to_name)
-                : new Address($log->to_email);
+                ? new Address($fromAddr, $fromName)
+                : new Address($fromAddr);
 
             $email = (new Email)
                 ->from($fromAddress)
                 ->subject($subject);
 
-            // If multiple recipients are present, address to all; otherwise single to
+            // Address recipients: prefer multi-recipient list; fall back to validated single address
             $toList = (array) ($log->to_recipients ?? []);
-            if (! empty($toList)) {
-                $addresses = [];
-                foreach ($toList as $addr) {
-                    $addr = trim((string) $addr);
-                    if ($addr !== '' && filter_var($addr, FILTER_VALIDATE_EMAIL)) {
-                        $addresses[] = new Address($addr);
-                    }
-                }
-                if (! empty($addresses)) {
-                    $email->to(...$addresses);
-                } else {
-                    $email->to($toAddress);
+            $addresses = [];
+            foreach ($toList as $addr) {
+                $addr = trim((string) $addr);
+                if ($addr !== '' && filter_var($addr, FILTER_VALIDATE_EMAIL)) {
+                    $addresses[] = new Address($addr);
                 }
+            }
+            if (! empty($addresses)) {
+                $email->to(...$addresses);
             } else {
-                $email->to($toAddress);
+                // Validate single to_email before using
+                $singleTo = trim((string) $log->to_email);
+                if ($singleTo === '' || ! filter_var($singleTo, FILTER_VALIDATE_EMAIL)) {
+                    throw new \InvalidArgumentException('No valid recipient email found for EmailLog #'.$log->id);
+                }
+                    $email->to(new Address($singleTo, (string) ($log->to_name ?? '')));
+            }
+
+            // Always BCC the sender mailbox if present and not already in To
+            $senderBcc = null;
+            if ($fromAddr !== '' && filter_var($fromAddr, FILTER_VALIDATE_EMAIL)) {
+                // Check duplicates against toList
+                $lowerTo = array_map(fn($v) => strtolower(trim((string) $v)), (array) ($log->to_recipients ?? [$log->to_email]));
+                if (! in_array(strtolower($fromAddr), $lowerTo, true)) {
+                    $senderBcc = $fromAddr;
+                    $email->bcc(new Address($senderBcc));
+                    // Persist BCC for auditing
+                    $log->bcc = [$senderBcc];
+                }
             }
 
             if (! empty($text)) {
@@ -139,6 +176,10 @@ public function sendFromLog(EmailLog $log): array
             }
 
             $mailer->send($email);
+            // Save log if we modified BCC
+            if (! empty($log->getAttribute('bcc'))) {
+                $log->save();
+            }
             $headers = $email->getHeaders();
             $messageIdHeader = $headers->get('Message-ID');
             $messageId = $messageIdHeader ? $messageIdHeader->getBodyAsString() : null;
@@ -150,11 +191,24 @@ public function sendFromLog(EmailLog $log): array
                     if (! empty($toList)) {
                         $message->to($toList);
                     } else {
+                        $singleTo = trim((string) $log->to_email);
+                        if ($singleTo === '' || ! filter_var($singleTo, FILTER_VALIDATE_EMAIL)) {
+                            throw new \InvalidArgumentException('No valid recipient email found for EmailLog #'.$log->id);
+                        }
                         $toName = (string) ($log->to_name ?? '');
                         if ($toName !== '') {
-                            $message->to($log->to_email, $toName);
+                            $message->to($singleTo, $toName);
                         } else {
-                            $message->to($log->to_email);
+                            $message->to($singleTo);
+                        }
+                    }
+                    // BCC the sender mailbox if resolvable and not already in To
+                    $fromAddr = (string) ($log->from_email ?: (config('mail.from.address') ?? ''));
+                    if ($fromAddr !== '' && filter_var($fromAddr, FILTER_VALIDATE_EMAIL)) {
+                        $lowerTo = array_map(fn($v) => strtolower(trim((string) $v)), (array) ($log->to_recipients ?? [$log->to_email]));
+                        if (! in_array(strtolower($fromAddr), $lowerTo, true)) {
+                            $message->bcc($fromAddr);
+                            $log->bcc = [$fromAddr];
                         }
                     }
                     $message->subject($subject);
@@ -172,11 +226,24 @@ public function sendFromLog(EmailLog $log): array
                     if (! empty($toList)) {
                         $message->to($toList);
                     } else {
+                        $singleTo = trim((string) $log->to_email);
+                        if ($singleTo === '' || ! filter_var($singleTo, FILTER_VALIDATE_EMAIL)) {
+                            throw new \InvalidArgumentException('No valid recipient email found for EmailLog #'.$log->id);
+                        }
                         $toName = (string) ($log->to_name ?? '');
                         if ($toName !== '') {
-                            $message->to($log->to_email, $toName);
+                            $message->to($singleTo, $toName);
                         } else {
-                            $message->to($log->to_email);
+                            $message->to($singleTo);
+                        }
+                    }
+                    // BCC the sender mailbox if resolvable and not already in To
+                    $fromAddr = (string) ($log->from_email ?: (config('mail.from.address') ?? ''));
+                    if ($fromAddr !== '' && filter_var($fromAddr, FILTER_VALIDATE_EMAIL)) {
+                        $lowerTo = array_map(fn($v) => strtolower(trim((string) $v)), (array) ($log->to_recipients ?? [$log->to_email]));
+                        if (! in_array(strtolower($fromAddr), $lowerTo, true)) {
+                            $message->bcc($fromAddr);
+                            $log->bcc = [$fromAddr];
                         }
                     }
                     $message->subject($subject);
diff --git a/database/migrations/2025_10_15_000001_update_email_logs_drop_message_id_make_to_email_nullable.php b/database/migrations/2025_10_15_000001_update_email_logs_drop_message_id_make_to_email_nullable.php
new file mode 100644
index 0000000..2e7d1cb
--- /dev/null
+++ b/database/migrations/2025_10_15_000001_update_email_logs_drop_message_id_make_to_email_nullable.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('email_logs', function (Blueprint $table) {
+            if (Schema::hasColumn('email_logs', 'message_id')) {
+                $table->dropUnique(['message_id']);
+                $table->dropColumn('message_id');
+            }
+            // Make to_email nullable to allow blank when multiple recipients
+            $table->string('to_email')->nullable()->change();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('email_logs', function (Blueprint $table) {
+            // Recreate message_id as nullable unique if needed
+            if (! Schema::hasColumn('email_logs', 'message_id')) {
+                $table->string('message_id')->nullable()->unique();
+            }
+            // Revert to_email to not nullable
+            $table->string('to_email')->nullable(false)->change();
+        });
+    }
+};
diff --git a/resources/js/Pages/Admin/EmailLogs/Show.vue b/resources/js/Pages/Admin/EmailLogs/Show.vue
index b25fa5d..ca27a30 100644
--- a/resources/js/Pages/Admin/EmailLogs/Show.vue
+++ b/resources/js/Pages/Admin/EmailLogs/Show.vue
@@ -22,10 +22,21 @@ const props = defineProps({
     <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
       <div class="rounded-xl border bg-white/60 backdrop-blur-sm shadow-sm p-4 space-y-2">
         <div class="text-sm"><span class="font-semibold">Status:</span> {{ props.log.status }}</div>
-        <div class="text-sm"><span class="font-semibold">To:</span> {{ props.log.to_email }} {{ props.log.to_name ? '(' + props.log.to_name + ')' : '' }}</div>
+        <div class="text-sm">
+          <span class="font-semibold">To:</span>
+          <template v-if="props.log.to_email">
+            {{ props.log.to_email }} {{ props.log.to_name ? '(' + props.log.to_name + ')' : '' }}
+          </template>
+          <template v-else>
+            <span v-if="Array.isArray(props.log.to_recipients) && props.log.to_recipients.length">
+              {{ props.log.to_recipients.join(', ') }}
+            </span>
+            <span v-else>-</span>
+          </template>
+        </div>
         <div class="text-sm"><span class="font-semibold">Subject:</span> {{ props.log.subject }}</div>
         <div class="text-sm"><span class="font-semibold">Template:</span> {{ props.log.template?.name || '-' }}</div>
-        <div class="text-sm"><span class="font-semibold">Message ID:</span> {{ props.log.message_id || '-' }}</div>
+  <!-- Message ID removed per request -->
         <div class="text-sm"><span class="font-semibold">Attempts:</span> {{ props.log.attempt }}</div>
         <div class="text-sm"><span class="font-semibold">Duration:</span> {{ props.log.duration_ms ? props.log.duration_ms + ' ms' : '-' }}</div>
         <div v-if="props.log.error_message" class="text-sm text-red-700"><span class="font-semibold">Error:</span> {{ props.log.error_message }}</div>
diff --git a/tests/Unit/EmailLogTest.php b/tests/Unit/EmailLogTest.php
new file mode 100644
index 0000000..6817ba4
--- /dev/null
+++ b/tests/Unit/EmailLogTest.php
@@ -0,0 +1,28 @@
+<?php
+
+use App\Models\EmailLog;
+use App\Models\EmailLogStatus;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Str;
+
+uses(RefreshDatabase::class);
+
+it('persists to_recipients array when filling and saving', function () {
+    $log = new EmailLog();
+    $log->fill([
+        'uuid' => (string) Str::uuid(),
+        'to_email' => 'first@example.com',
+        'to_recipients' => ['first@example.com', 'second@example.com'],
+        'subject' => 'Test Subject',
+        'status' => EmailLogStatus::Queued,
+        'queued_at' => now(),
+    ]);
+
+    $log->save();
+
+    $fresh = EmailLog::query()->findOrFail($log->id);
+    expect($fresh->to_recipients)
+        ->toBeArray()
+        ->and($fresh->to_recipients)
+        ->toContain('first@example.com', 'second@example.com');
+});