Authenticate Emails with SPF, DKIM, and SenderID Auto forward your emails to Vtiger Managing User Profiles Automate Outgoing Emails in Email Settings Automation - Approvals Automation - Assignment Rules Set up Multi-path Workflows Creating a Scheduled Workflow Automation - Scheduler Creating a Workflow Webforms in Vtiger CRM Set up a Workflow Action to Create Event Set up a Workflow Action to Create Records Set up a Workflow Action to Create Task Set up a Workflow Action to Invoke Custom Function Set up a Workflow Action to Create an SMS Task Set up a Workflow Action to Send Mails Set up a Workflow Action to Update Fields Automation - Workflow Action - Webhook Automation - Workflows - Vtiger Expressions Configuration - Business Hours Configuration - Company Details Configuration - Consents Configuration - Customer Portal Maps in Vtiger CRM Configuration - Usage Details Configuring Encrypted Data Fields in Vtiger CRM Configure Picklist Dependencies Considerations for Deactivating Vtiger Users Control Fields and Record Displays using Configuration Editor Create Reminders for Records and Inbox Create a field of a Grid type Dealing with Currencies and Taxes Enable Desktop Notifications on Chrome Web Browsers Vtiger CRM Add-ons IMAP Configuration - 2-way sync between Vtiger and IMAP providers Setting up Autopay & Payment Gateways Inventory - Tax Management Inventory - Terms and Conditions Login to Vtiger on SSO SAML using ADFS Mailroom Functionality for Different Scenarios Manage Multiple Currencies Marketing and Sales - Deal to Project Mapping Marketing and Sales - Lead Conversion Data Mapping Marketing and Sales - Profile Scoring Module Management - Labels Editor Module Management - Module Numbering Configure My Preferences Feature My Preferences - Calendar Settings Tags in Vtiger My Preferences - Notification Preferences SAML Support in Vtiger CRM Vtiger Mailroom Settings - Configure Module Settings Settings - Create Dynamic Fields and Layouts Module Management - Creating a Relationship Between Modules Settings - Customize Records and Fields for your Business Settings - Left Menu Settings - Manage Global Picklists in Vtiger Settings - Set up your Support Team Settings - Start Up Page Settings - Working with Picklist Values Module Management - Module Builder Support - SLA Policies Troubleshooting Login Issues Add-Edit Unsubscribe Links in your Email Template User Management - Authentication User Management - Encrypted Field Access Logs User Management - Groups User Management - Login History User Management - Profiles User Management - Roles User Management - Settings Log User Management - Sharing Rules User Management - Users User Management - Vtiger Support Access Vtiger Buzz - Chrome Extension for Notifications Vtiger Implementation wizard Vtiger Language Support Configuring Websense Trackers Websense - Widgets Module Management - Module Layouts & Fields Generate and Manage Third-party App Passwords in Yahoo Configuring App Passwords for Gmail Outgoing Server and Yahoo Mail Configuration - Storage Guard Customizing your Self-Service Portal Theme Using CSS Styles Automation - SMS Reply Actions Adding Hidden Fields to a Webform Configuring Dependent Fields and Blocks for Modules Auto forward Emails from Microsoft Office 365 Adding Custom Module Login Page Customization Settings - Personalize Module Layouts Module Management - Modules Duplicate Prevention in Modules Formula Fields Creating Custom Filters Adding a local DNS Entry

Autorespond with a thank you note to Leads that are generated through Webform (websites).

1. Click the User Menu on the top right of the screen 
2. Click Settings > Automation > Workflows > Add Workflow
3. Select Lead from Target Module
4. Click Lead Creation radio button in Trigger workflow on
5. Add Condition Source is Website
6. Click Send Mail from Workflow Action
7. Create Email Template, enter details
8. Click Save

Refer: Send Mail