diff --git a/packages/ui-inbox/src/settings/integrations/components/mail/MailForm.tsx b/packages/ui-inbox/src/settings/integrations/components/mail/MailForm.tsx
index 04e959ec15..f355bdd824 100644
--- a/packages/ui-inbox/src/settings/integrations/components/mail/MailForm.tsx
+++ b/packages/ui-inbox/src/settings/integrations/components/mail/MailForm.tsx
@@ -40,6 +40,13 @@ import Tip from '@erxes/ui/src/components/Tip';
 import Uploader from '@erxes/ui/src/components/Uploader';
 import dayjs from 'dayjs';
 import { generateEmailTemplateParams } from '@erxes/ui-engage/src/utils';
+import {
+  MailColumn,
+  MailSuggestionContainer,
+  MailSuggestionItem
+} from '../../styles';
+import { Avatar } from '@erxes/ui/src/components/SelectWithSearch';
+import { IContact } from '../../types';
 
 type Props = {
   emailTemplates: any[] /*change type*/;
@@ -53,6 +60,7 @@ type Props = {
   replyAll?: boolean;
   brandId?: string;
   mails?: IMessage[];
+  contacts?: IContact[];
   messageId?: string;
   totalCount?: number;
   closeModal?: () => void;
@@ -99,12 +107,13 @@ type State = {
   name: string;
   showReply: string;
   isRepliesRetrieved: boolean;
+  selectedSuggestionIndex: number;
+  focusInput: string;
 };
 
 class MailForm extends React.Component<Props, State> {
   constructor(props: Props) {
     super(props);
-
     const { isForward, replyAll, mailData = {} as IMail, emailTo } = props;
 
     const mailWidget = JSON.parse(localStorage.getItem('emailWidgetData'));
@@ -176,7 +185,9 @@ class MailForm extends React.Component<Props, State> {
 
       name: `mail_${mailKey}`,
       showReply: `reply_${mailKey}`,
-      isRepliesRetrieved: false
+      isRepliesRetrieved: false,
+      selectedSuggestionIndex: 0,
+      focusInput: ''
     };
   }
 
@@ -449,10 +460,9 @@ class MailForm extends React.Component<Props, State> {
   };
 
   onSelectChange = <T extends keyof State>(name: T, e: any) => {
-    this.setState(({ [name]: e.currentTarget.value } as unknown) as Pick<
-      State,
-      keyof State
-    >);
+    this.setState(({
+      [name]: e.currentTarget.value
+    } as unknown) as Pick<State, keyof State>);
 
     this.prepareData();
   };
@@ -551,17 +561,155 @@ class MailForm extends React.Component<Props, State> {
     );
   }
 
+  getFilteredContacts = (fieldName: string) => {
+    const field = this.state[fieldName];
+    const { contacts } = this.props;
+
+    if (
+      field.trim() === '' ||
+      field.substr(field.lastIndexOf(',') + 1).trim() === ''
+    ) {
+      return [];
+    }
+
+    const filterLowerCase = field
+      .toLowerCase()
+      .substr(field.lastIndexOf(',') + 1)
+      .trim();
+
+    return (contacts || [])
+      .filter(contact =>
+        [contact.primaryEmail, contact.primaryName].some(
+          prop =>
+            prop?.toLowerCase().includes(filterLowerCase) &&
+            !field?.includes(contact.primaryEmail)
+        )
+      )
+      .slice(0, 5);
+  };
+
+  handleSuggestionClick = (contact: IContact, fieldName: string) => {
+    const field = this.state[fieldName];
+    const updatedField = field
+      ? field.replace(
+          new RegExp(`${field.substr(field.lastIndexOf(',') + 1).trim()}$`),
+          ''
+        ) +
+        contact.primaryEmail +
+        ', '
+      : contact.primaryEmail + ', ';
+
+    this.setState(({
+      [fieldName]: updatedField,
+      focusInput: fieldName
+    } as unknown) as Pick<State, keyof State>);
+  };
+
+  handleKeyDown = (e: any, fieldName: string) => {
+    const { selectedSuggestionIndex } = this.state;
+    const filterContacts = this.getFilteredContacts(fieldName);
+
+    if (e.keyCode === 38 && selectedSuggestionIndex > 0) {
+      e.preventDefault();
+      this.setState({
+        selectedSuggestionIndex: selectedSuggestionIndex - 1
+      });
+    }
+
+    if (
+      e.keyCode === 40 &&
+      selectedSuggestionIndex < filterContacts.length - 1
+    ) {
+      e.preventDefault();
+      this.setState({
+        selectedSuggestionIndex: selectedSuggestionIndex + 1
+      });
+    }
+
+    if (e.keyCode === 13) {
+      const selectedItem = filterContacts[selectedSuggestionIndex];
+      selectedItem && this.handleSuggestionClick(selectedItem, fieldName);
+    }
+  };
+
+  renderMailSuggestions(fieldName: string) {
+    const filterContacts = this.getFilteredContacts(fieldName);
+
+    if (filterContacts.length === 0) {
+      return null;
+    }
+
+    return (
+      <MailSuggestionContainer>
+        {filterContacts.map((contact, index) =>
+          this.renderMailSuggestionsRow(contact, index, fieldName)
+        )}
+      </MailSuggestionContainer>
+    );
+  }
+
+  renderMailSuggestionsRow(
+    contact: IContact,
+    index: number,
+    fieldName: string
+  ) {
+    const { selectedSuggestionIndex } = this.state;
+    const { primaryName, primaryEmail, avatar } = contact;
+    const field = this.state[fieldName];
+    const fieldRegex = new RegExp(
+      `(${field.substr(field.lastIndexOf(',') + 1).trim()})`,
+      'gi'
+    );
+
+    return (
+      <MailSuggestionItem
+        key={index}
+        onMouseDown={e => {
+          e.preventDefault();
+          this.handleSuggestionClick(contact, fieldName);
+        }}
+        className={`${index === selectedSuggestionIndex ? 'selected' : ''}`}
+      >
+        <Avatar
+          src={avatar ? readFile(avatar, 40) : '/images/avatar-colored.svg'}
+        />
+        <Column>
+          {primaryName && (
+            <p
+              dangerouslySetInnerHTML={{
+                __html: primaryName.replace(
+                  fieldRegex,
+                  '<span style="font-weight: bold;">$1</span>'
+                )
+              }}
+            />
+          )}
+          <p>{primaryEmail}</p>
+        </Column>
+      </MailSuggestionItem>
+    );
+  }
+
   renderTo() {
     return (
       <FlexRow isEmail={true}>
         <label>To:</label>
-        <FormControl
-          autoFocus={this.props.isForward}
-          value={this.state.to}
-          onChange={this.onSelectChange.bind(this, 'to')}
-          name="to"
-          required={true}
-        />
+        <MailColumn>
+          <FormControl
+            autoFocus={this.props.isForward}
+            value={this.state.to}
+            onChange={e => this.onSelectChange('to', e)}
+            name="to"
+            required={true}
+            autoComplete="off"
+            onKeyDown={e => {
+              this.handleKeyDown(e, 'to');
+            }}
+            onFocus={() => this.setState({ focusInput: 'to' })}
+            onBlur={() => this.setState({ focusInput: '' })}
+          />
+          {this.state.focusInput === 'to' && this.renderMailSuggestions('to')}
+        </MailColumn>
         {this.renderRightSide()}
       </FlexRow>
     );
@@ -577,13 +725,20 @@ class MailForm extends React.Component<Props, State> {
     return (
       <FlexRow>
         <label>Cc:</label>
-        <FormControl
-          autoFocus={true}
-          componentClass="textarea"
-          onChange={this.onSelectChange.bind(this, 'cc')}
-          name="cc"
-          value={cc}
-        />
+        <MailColumn>
+          <FormControl
+            autoFocus={true}
+            onChange={this.onSelectChange.bind(this, 'cc')}
+            name="cc"
+            value={cc}
+            onKeyDown={e => {
+              this.handleKeyDown(e, 'cc');
+            }}
+            onFocus={() => this.setState({ focusInput: 'cc' })}
+            onBlur={() => this.setState({ focusInput: '' })}
+          />
+          {this.state.focusInput === 'cc' && this.renderMailSuggestions('cc')}
+        </MailColumn>
       </FlexRow>
     );
   }
@@ -598,13 +753,20 @@ class MailForm extends React.Component<Props, State> {
     return (
       <FlexRow>
         <label>Bcc:</label>
-        <FormControl
-          autoFocus={true}
-          onChange={this.onSelectChange.bind(this, 'bcc')}
-          componentClass="textarea"
-          name="bcc"
-          value={bcc}
-        />
+        <MailColumn>
+          <FormControl
+            autoFocus={true}
+            onChange={this.onSelectChange.bind(this, 'bcc')}
+            name="bcc"
+            value={bcc}
+            onKeyDown={e => {
+              this.handleKeyDown(e, 'bcc');
+            }}
+            onFocus={() => this.setState({ focusInput: 'bcc' })}
+            onBlur={() => this.setState({ focusInput: '' })}
+          />
+          {this.state.focusInput === 'bcc' && this.renderMailSuggestions('bcc')}
+        </MailColumn>
       </FlexRow>
     );
   }
diff --git a/packages/ui-inbox/src/settings/integrations/containers/mail/MailForm.tsx b/packages/ui-inbox/src/settings/integrations/containers/mail/MailForm.tsx
index 2c71687e81..16461c768b 100644
--- a/packages/ui-inbox/src/settings/integrations/containers/mail/MailForm.tsx
+++ b/packages/ui-inbox/src/settings/integrations/containers/mail/MailForm.tsx
@@ -18,6 +18,7 @@ import { isEnabled } from '@erxes/ui/src/utils/core';
 import queryString from 'query-string';
 import withCurrentUser from '@erxes/ui/src/auth/containers/withCurrentUser';
 import { withRouter } from 'react-router-dom';
+import { ContactQueryResponse } from '../../types';
 
 type Props = {
   detailQuery?: any;
@@ -52,6 +53,7 @@ type FinalProps = {
   currentUser: IUser;
   emailTemplatesQuery: any /*change type*/;
   emailTemplatesTotalCountQuery: any /*change type*/;
+  contactsMainQuery: ContactQueryResponse;
 } & Props;
 
 class MailFormContainer extends React.Component<
@@ -82,6 +84,7 @@ class MailFormContainer extends React.Component<
       closeModal,
       emailTemplatesQuery,
       emailTemplatesTotalCountQuery,
+      contactsMainQuery,
       currentUser,
       mails,
       messageId
@@ -254,6 +257,35 @@ class MailFormContainer extends React.Component<
       });
     };
 
+    const contacts = !contactsMainQuery.loading
+      ? [
+          ...contactsMainQuery?.customers?.list,
+          ...contactsMainQuery?.companies?.list,
+          ...contactsMainQuery?.leads?.list
+        ]
+          .filter(contact => {
+            return contact.primaryEmail !== null;
+          })
+          .map(contact => {
+            const {
+              _id,
+              firstName,
+              lastName,
+              primaryName,
+              primaryEmail,
+              avatar
+            } = contact;
+
+            return {
+              primaryName:
+                primaryName || `${firstName || ''} ${lastName || ''}`,
+              primaryEmail: primaryEmail,
+              avatar: avatar,
+              id: _id
+            };
+          })
+      : [];
+
     const updatedProps = {
       ...this.props,
       sendMail,
@@ -265,7 +297,8 @@ class MailFormContainer extends React.Component<
       mails,
       messageId,
       verifiedImapEmails: verifiedImapEmails || [],
-      verifiedEngageEmails: verifiedEngageEmails || []
+      verifiedEngageEmails: verifiedEngageEmails || [],
+      contacts: contacts || []
     };
 
     return <MailForm {...updatedProps} />;
@@ -293,6 +326,19 @@ const WithMailForm = withProps<Props>(
         fetchPolicy: 'cache-first'
       }),
       skip: !isEnabled('emailtemplates')
+    }),
+    graphql<Props, any>(gql(queries.contacts), {
+      name: 'contactsMainQuery',
+      options: ({ queryParams }) => ({
+        variables: {
+          page: 1,
+          perPage: 20,
+          leadType: 'lead',
+          customerType: 'customer'
+        },
+        fetchPolicy: 'cache-first'
+      }),
+      skip: !isEnabled('contacts')
     })
   )(withCurrentUser(MailFormContainer))
 );
diff --git a/packages/ui-inbox/src/settings/integrations/containers/utils.tsx b/packages/ui-inbox/src/settings/integrations/containers/utils.tsx
index 0ebf1a8fde..7346afa8b5 100644
--- a/packages/ui-inbox/src/settings/integrations/containers/utils.tsx
+++ b/packages/ui-inbox/src/settings/integrations/containers/utils.tsx
@@ -6,7 +6,9 @@ import { queries } from '../graphql';
 import sanitizeHtml from 'sanitize-html';
 
 export const formatStr = (emailString?: string) => {
-  return emailString ? emailString.split(/[ ,]+/) : [];
+  return emailString
+    ? emailString.split(/[ , ]+/).filter(email => email !== '')
+    : [];
 };
 
 export const formatObj = (emailArray: IEmail[]) => {
diff --git a/packages/ui-inbox/src/settings/integrations/graphql/queries.ts b/packages/ui-inbox/src/settings/integrations/graphql/queries.ts
index c9a186ca3e..767bcc77ef 100644
--- a/packages/ui-inbox/src/settings/integrations/graphql/queries.ts
+++ b/packages/ui-inbox/src/settings/integrations/graphql/queries.ts
@@ -220,6 +220,39 @@ const imapIntegrations = `
   }
 `;
 
+const contacts = isEnabled('contacts')
+  ? `
+    query contactsMain($page: Int, $perPage: Int, $customerType: String, $leadType: String) {
+      leads: customersMain(page: $page, perPage: $perPage, type: $leadType) {
+        list {
+          _id
+          primaryEmail
+          firstName
+          lastName
+          avatar
+        }
+      }
+      customers: customersMain(page: $page, perPage: $perPage, type: $customerType) {
+        list {
+          _id
+          primaryEmail
+          firstName
+          lastName
+          avatar
+        }
+      }
+      companies : companiesMain(page: $page, perPage: $perPage) {
+          list {
+            _id
+            primaryName
+            primaryEmail
+            avatar
+          }
+        }
+    }
+  `
+  : ``;
+
 export default {
   users,
   brands,
@@ -237,5 +270,6 @@ export default {
   integrationsGetTwitterAccount,
   integrationsGetFbPages,
   integrationsVideoCallUsageStatus,
-  imapIntegrations
+  imapIntegrations,
+  contacts
 };
diff --git a/packages/ui-inbox/src/settings/integrations/styles.ts b/packages/ui-inbox/src/settings/integrations/styles.ts
index c487045690..0139256231 100644
--- a/packages/ui-inbox/src/settings/integrations/styles.ts
+++ b/packages/ui-inbox/src/settings/integrations/styles.ts
@@ -423,6 +423,48 @@ const SearchInput = styledTS<{ isInPopover: boolean }>(styled.div)`
   }
 `;
 
+const MailSuggestionContainer = styled.div`
+  margin-top: 5px;
+  position: absolute;
+  top: calc(100% + 5px);
+  left: 0;
+  width: 100%;
+  overflow: hidden;
+  background-color: white;
+  border: none;
+  border-radius: 0.25rem;
+  box-shadow: 0 5px 15px 1px rgba(0, 0, 0, 0.15);
+  z-index: 10;
+  padding: 5px 0;
+  outline: none;
+`;
+
+const MailSuggestionItem = styled.div`
+  display: flex;
+  padding: 8px 14px;
+  align-items: center;
+  gap: 5px;
+  cursor: pointer;
+  transition: background-color 0.2s ease-in-out;
+
+  p {
+    margin: 0;
+  }
+
+  &:hover {
+    background-color: #f0f0f0;
+  }
+
+  &.selected {
+    background-color: #f1f1f1;
+  }
+`;
+
+const MailColumn = styled.div`
+  flex: 1;
+  position: relative;
+`;
+
 export {
   MessengerPreview,
   IntegrationName,
@@ -455,5 +497,8 @@ export {
   ShowReplyButtonWrapper,
   ShowReplies,
   PopoverLinkWrapper,
-  SearchInput
+  SearchInput,
+  MailSuggestionContainer,
+  MailSuggestionItem,
+  MailColumn
 };
diff --git a/packages/ui-inbox/src/settings/integrations/types.ts b/packages/ui-inbox/src/settings/integrations/types.ts
index 4a9d41cee6..b1a98c7d6e 100644
--- a/packages/ui-inbox/src/settings/integrations/types.ts
+++ b/packages/ui-inbox/src/settings/integrations/types.ts
@@ -195,6 +195,21 @@ export interface ISkillData {
   }>;
 }
 
+export type IContact = {
+  _id?: string;
+  firstName?: string;
+  lastName?: string;
+  primaryName?: string;
+  primaryEmail: string;
+  avatar: string;
+};
+
+export type ContactQueryResponse = {
+  customers: { list: IContact[] };
+  companies: { list: IContact[] };
+  leads: { list: IContact[] };
+} & QueryResponse;
+
 export interface IMessengerData {
   botEndpointUrl?: string;
   botShowInitialMessage?: boolean;