diff --git a/src/components/composer/ComposerRecipients.vue b/src/components/composer/ComposerRecipients.vue
index 0e7110f..f2ef810 100644
--- a/src/components/composer/ComposerRecipients.vue
+++ b/src/components/composer/ComposerRecipients.vue
@@ -1,8 +1,11 @@
 <script setup lang="ts">
+import { useRecipientLookupStore } from '@/stores/mailRecipientsStore'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
 interface Props {
-  to: string[]
-  cc: string[]
-  bcc: string[]
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
   subject: string
   showCc: boolean
   showBcc: boolean
@@ -10,14 +13,34 @@ interface Props {
 
 defineProps<Props>()
 
-defineEmits<{
-  'update:to': [value: string[]]
-  'update:cc': [value: string[]]
-  'update:bcc': [value: string[]]
+const emit = defineEmits<{
+  'update:to': [value: MessageAddressInterface[]]
+  'update:cc': [value: MessageAddressInterface[]]
+  'update:bcc': [value: MessageAddressInterface[]]
   'update:subject': [value: string]
   'toggle:cc': []
   'toggle:bcc': []
 }>()
+
+const recipientLookup = useRecipientLookupStore()
+
+/**
+ * Normalize combobox entries: typed strings become bare address objects;
+ * picked suggestions are already MessageAddressInterface and pass through.
+ */
+function normalize(entries: (MessageAddressInterface | string)[]): MessageAddressInterface[] {
+  return entries.map(entry =>
+    typeof entry === 'string' ? { address: entry } : entry,
+  )
+}
+
+function chipLabel(item: MessageAddressInterface): string {
+  return item.label ? `${item.label} <${item.address}>` : item.address
+}
+
+function itemTitle(item: MessageAddressInterface): string {
+  return item.label || item.address
+}
 </script>
 
 <template>
@@ -28,11 +51,23 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:to', $event)"
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:to', normalize($event))"
     >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
       <template #append-inner>
         <v-btn
           size="x-small"
@@ -59,11 +94,24 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:cc', $event)"
-    />
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:cc', normalize($event))"
+    >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
+    </v-combobox>
 
     <v-combobox
       v-if="showBcc"
@@ -72,11 +120,24 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:bcc', $event)"
-    />
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:bcc', normalize($event))"
+    >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
+    </v-combobox>
 
     <v-text-field
       :model-value="subject"
diff --git a/src/services/recipientService.ts b/src/services/recipientService.ts
new file mode 100644
index 0000000..085c81f
--- /dev/null
+++ b/src/services/recipientService.ts
@@ -0,0 +1,110 @@
+/**
+ * Recipient service
+ */
+
+import { entityService } from '@PeopleManager/services'
+import { GroupObject, IndividualObject, OrganizationObject, type EntityObject } from '@PeopleManager/models'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+/** Minimum query length before a lookup is worthwhile. */
+const MIN_QUERY_LENGTH = 3
+
+/** Default cap on the number of matches returned. */
+const DEFAULT_LIMIT = 10
+
+/**
+ * Derive a human-readable display name from a contact's properties.
+ */
+function displayName(properties: IndividualObject | OrganizationObject | GroupObject): string {
+  if (properties.label) {
+    return properties.label
+  }
+
+  if (properties instanceof IndividualObject) {
+    const parts = [properties.names?.given, properties.names?.family].filter(Boolean)
+    if (parts.length > 0) {
+      return parts.join(' ')
+    }
+  } else if (properties instanceof OrganizationObject) {
+    if (properties.names?.full) {
+      return properties.names.full
+    }
+  }
+
+  return ''
+}
+
+/**
+ * Flatten a contact entity into one recipient per email address.
+ * Groups (no addressable email) are skipped.
+ */
+function toRecipients(entity: EntityObject): MessageAddressInterface[] {
+  const properties = entity.properties
+
+  if (properties instanceof GroupObject) {
+    return []
+  }
+
+  const emails = properties.emails
+  if (!emails) {
+    return []
+  }
+
+  const label = displayName(properties)
+  const recipients: MessageAddressInterface[] = []
+
+  for (const email of Object.values(emails)) {
+    const address = email?.address?.trim()
+    if (!address) {
+      continue
+    }
+    recipients.push({ address, label: label || address })
+  }
+
+  return recipients
+}
+
+export const recipientService = {
+  /**
+   * Search the user's contacts for recipients matching a query.
+   *
+   * @param query - free-text fragment matched against contact names
+   * @param limit - maximum number of recipients to return
+   *
+   * @returns De-duplicated recipients (one per email address)
+   */
+  async search(query: string, limit: number = DEFAULT_LIMIT): Promise<MessageAddressInterface[]> {
+    const trimmed = query.trim()
+    if (trimmed.length < MIN_QUERY_LENGTH) {
+      return []
+    }
+
+    const recipients: MessageAddressInterface[] = []
+    const seen = new Set<string>()
+
+    try {
+      // The "*" attribute defaults to LIKE, so a scalar string is all that is
+      // needed; range caps the scan to the first `limit` matches.
+      await entityService.listStream(
+        { filter: { '*': trimmed }, range: { type: 'tally', anchor: 'absolute', position: 0, tally: limit } },
+        (entity: EntityObject) => {
+          for (const recipient of toRecipients(entity)) {
+            const key = recipient.address.toLowerCase()
+            if (seen.has(key)) {
+              continue
+            }
+            seen.add(key)
+            recipients.push(recipient)
+          }
+        },
+      )
+    } catch (error: any) {
+      console.error('[Mail][Recipient Service] - Search failed:', error)
+      return []
+    }
+
+    return recipients.slice(0, limit)
+  },
+}
+
+export default recipientService
diff --git a/src/stores/mailCompositionStore.ts b/src/stores/mailCompositionStore.ts
index a38c641..43b7724 100644
--- a/src/stores/mailCompositionStore.ts
+++ b/src/stores/mailCompositionStore.ts
@@ -14,6 +14,7 @@ import type {
 import { ComposerMode } from '@/types/composer'
 import type { ComposerDraft, ComposerDraftAttachment, ComposerDraftMessage, ComposerSenderIdentity } from '@/types/composer'
 import { EntityObject, MessageAddressObject, ServiceObject } from '@MailManager/models'
+import type { MessageAddressInterface } from '@MailManager/types/message'
 
 export const useMailCompositionStore = defineStore('mailCompositionStore', () => {
   const servicesStore = useServicesStore()
@@ -234,7 +235,7 @@ export const useMailCompositionStore = defineStore('mailCompositionStore', () =>
     }
   }
 
-  function updateRecipients(field: 'to' | 'cc' | 'bcc', values: string[]) {
+  function updateRecipients(field: 'to' | 'cc' | 'bcc', values: MessageAddressInterface[]) {
     if (!activeDraft.value) {
       return
     }
@@ -464,7 +465,7 @@ function buildMessage(
     const freshMessage = emptyMessage()
 
     if (source && source instanceof MessageAddressObject) {
-      freshMessage.to = [source.address]
+      freshMessage.to = [{ address: source.address, label: source.label }]
     }
 
     return freshMessage
@@ -482,9 +483,10 @@ function buildMessage(
   const sentLabel = sentAt ? new Date(sentAt).toLocaleString() : 'an unknown time'
 
   if (mode === ComposerMode.Reply) {
-    const fromEmail = sourceMessage.replyTo?.[0]?.address || sourceMessage.from?.address || ''
+    const replyToAddr = sourceMessage.replyTo?.[0] ?? sourceMessage.from ?? null
+    const replyToAddress = replyToAddr?.address || ''
     return {
-      to: fromEmail ? [fromEmail] : [],
+      to: replyToAddress ? [{ address: replyToAddress, label: replyToAddr?.label }] : [],
       cc: [],
       bcc: [],
       subject: /^Re:/i.test(originalSubject) ? originalSubject : `Re: ${originalSubject}`,
diff --git a/src/stores/mailRecipientsStore.ts b/src/stores/mailRecipientsStore.ts
new file mode 100644
index 0000000..4fb323e
--- /dev/null
+++ b/src/stores/mailRecipientsStore.ts
@@ -0,0 +1,85 @@
+/**
+ * Recipients Store
+ */
+
+import { ref } from 'vue'
+import { defineStore } from 'pinia'
+import { recipientService } from '../services/recipientService'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+/** Minimum characters before a lookup fires. */
+const MIN_QUERY_LENGTH = 3
+
+/** Debounce window for keystroke-driven searches. */
+const DEBOUNCE_MS = 250
+
+export const useRecipientLookupStore = defineStore('mailRecipientsStore', () => {
+  const suggestions = ref<MessageAddressInterface[]>([])
+  const searching = ref(false)
+
+  let debounceTimer: ReturnType<typeof setTimeout> | null = null
+  // Monotonic token so out-of-order/stale responses are discarded.
+  let requestToken = 0
+
+  function cancelPending() {
+    if (debounceTimer) {
+      clearTimeout(debounceTimer)
+      debounceTimer = null
+    }
+  }
+
+  /**
+   * Clear suggestions and cancel any in-flight lookup.
+   */
+  function clear() {
+    cancelPending()
+    requestToken++
+    suggestions.value = []
+    searching.value = false
+  }
+
+  /**
+   * Debounced contact search. Queries shorter than MIN_QUERY_LENGTH clear the
+   * suggestion list without hitting the backend.
+   */
+  function search(query: string) {
+    const trimmed = (query ?? '').trim()
+    cancelPending()
+
+    if (trimmed.length < MIN_QUERY_LENGTH) {
+      requestToken++
+      suggestions.value = []
+      searching.value = false
+      return
+    }
+
+    searching.value = true
+    const token = ++requestToken
+
+    debounceTimer = setTimeout(async () => {
+      try {
+        const matches = await recipientService.search(trimmed)
+        if (token !== requestToken) {
+          return
+        }
+        suggestions.value = matches
+      } catch (error: any) {
+        if (token === requestToken) {
+          suggestions.value = []
+        }
+        console.error('[Mail][Recipient Lookup] - Search failed:', error)
+      } finally {
+        if (token === requestToken) {
+          searching.value = false
+        }
+      }
+    }, DEBOUNCE_MS)
+  }
+
+  return {
+    suggestions,
+    searching,
+    search,
+    clear,
+  }
+})
diff --git a/src/types/composer.ts b/src/types/composer.ts
index f1495f8..75810ae 100644
--- a/src/types/composer.ts
+++ b/src/types/composer.ts
@@ -1,5 +1,6 @@
 import type { ServiceObject } from "@MailManager/models/service"
-import type { EntityIdentifier, ServiceIdentifier } from "@MailManager/types/common"
+import type { EntityIdentifier } from "@MailManager/types/common"
+import type { MessageAddressInterface } from "@MailManager/types/message"
 
 export enum ComposerMode {
   Fresh = 'fresh',
@@ -18,9 +19,9 @@ export interface ComposerDraftAttachment {
 }
 
 export interface ComposerDraftMessage {
-  to: string[]
-  cc: string[]
-  bcc: string[]
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
   subject: string
   body: {
 	html: string
diff --git a/src/types/composition.ts b/src/types/composition.ts
index b3e38e5..31ea426 100644
--- a/src/types/composition.ts
+++ b/src/types/composition.ts
@@ -1,4 +1,5 @@
-import type { EntityIdentifier, ServiceIdentifier } from '@MailManager/types/common'
+import type { EntityIdentifier } from '@MailManager/types/common'
+import type { MessageAddressInterface } from '@MailManager/types/message'
 
 export interface CompositionSenderInterface {
   provider: string
@@ -8,9 +9,9 @@ export interface CompositionSenderInterface {
 }
 
 export interface CompositionMessageInterface {
-  to: string[]
-  cc: string[]
-  bcc: string[]
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
   subject: string
   body: {
     text: string
diff --git a/tsconfig.app.json b/tsconfig.app.json
index 1e834fa..02c04d8 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -6,7 +6,9 @@
     "src/utile/**/*.ts",
     "../../core/src/**/*.ts",
     "../mail_manager/src/**/*.ts",
-    "../mail_manager/src/**/*.vue"
+    "../mail_manager/src/**/*.vue",
+    "../people_manager/src/**/*.ts",
+    "../people_manager/src/**/*.vue"
   ],
   "exclude": ["src/**/__tests__/*"],
   "compilerOptions": {
@@ -15,7 +17,8 @@
       "@/*": ["./src/*"],
       "@KTXC": ["../../core/src/shared/index.ts"],
       "@KTXC/*": ["../../core/src/*"],
-      "@MailManager/*": ["../mail_manager/src/*"]
+      "@MailManager/*": ["../mail_manager/src/*"],
+      "@PeopleManager/*": ["../people_manager/src/*"]
     }
   }
 }
diff --git a/vite.config.ts b/vite.config.ts
index 6c0cda3..925ba02 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -31,6 +31,7 @@ export default defineConfig({
       '@': path.resolve(__dirname, './src'),
       '@KTXC': path.resolve(__dirname, '../../core/src'),
       '@MailManager': path.resolve(__dirname, '../mail_manager/src'),
+      '@PeopleManager': path.resolve(__dirname, '../people_manager/src'),
     },
   },
   build: {
@@ -49,6 +50,7 @@ export default defineConfig({
         'pinia',
         '@KTXC',
         /^@MailManager\//,
+        /^@PeopleManager\//,
       ],
       output: {
         paths: (id) => {
@@ -56,6 +58,9 @@ export default defineConfig({
           if (id.startsWith('@MailManager/')) {
             return '/modules/mail_manager/static/module.mjs'
           }
+          if (id.startsWith('@PeopleManager/')) {
+            return '/modules/people_manager/static/module.mjs'
+          }
           return id
         },
         assetFileNames: (assetInfo) => {