AI Email Marketing Tools

Top picks for effective, time-saving AI email marketing tools to boost engagement and ROI.

So, you've realized that AI is reshaping almost every industry out there, and now you're curious about how it can level up your email marketing game. Trust me, you're not alone. With the increasing buzz about artificial intelligence, I found myself diving into AI email marketing tools to see what all the hype was about.

Why AI? Well, AI can do wonders like personalizing emails, predicting behavior, and even optimizing send times. It's like having a mini-marketing wizard that takes the guesswork out of your campaign strategies. Intrigued yet?

What to Expect: In this article, I'll walk you through some of the best AI email marketing tools currently available. These tools are helping businesses—from startups to big brands—craft emails that not only get opened but also engage and convert.

I’m excited to share my findings, including key features, pros, and cons, so you can decide which tool might be the best fit for your needs. Let’s dive in and explore how these AI-driven platforms can supercharge your email marketing efforts!

The best AI Email Marketing Tools

  1. 31. Outboundlyai for automated email sequences

  2. 32. Warmy for boost email campaign success

  3. 33. Salesforge for ai-powered email personalization

  4. 34. Nureply for creating personalized cold email sequences

  5. 35. Moosend for crafting quick and effective email campaigns

  6. 36. Klaviyo for boost your email campaign engagement

  7. 37. Goemailtracker for optimizing email marketing campaigns

  8. 38. ittybrief for crafting concise email campaign summaries.

  9. 39. Campaigny for easy-to-use email campaign creation

  10. 40. UniqMail for personalized campaigns that boost engagement

  11. 41. GetResponse for boost open rates

  12. 42. Mailberry for ai-powered email generation

  13. 43. Mailforge for seamless cold email campaign management

  14. 44. Kundy for automate personalized email campaigns

  15. 45. Robin Ai for automated email personalization

168 Listings in AI Email Marketing Tools Available

31 . Outboundlyai

Best for automated email sequences

OutboundlyAI is an AI-assisted outreach tool tailored to enhance email marketing strategies by offering features like target identification, setting up email sequences, and scheduling campaigns with hyper-personalization capabilities. It is designed to cater to both newcomers exploring outbound strategies and established businesses with advanced outbound requirements, providing scalable solutions to meet various outreach needs. The tool assists in target identification by allowing users to choose a targeted customer list for email campaigns, and it aids in setting up email sequences by automating the process with a single click, facilitating effortless creation of email marketing campaigns. OutboundlyAI also enables scheduling of email campaigns for precise targeting, enhances email personalization using AI capabilities, and offers secure and robust inbox management to handle vital email data reliably. Moreover, it supports unlimited email accounts for scalability and integration with a wide variety of powerful tools to align with different tech stacks.

Pricing

Paid plans start at $29/month and include:

  • 2,000 Prospects
  • 2,500 Email Verification Credits /month
  • 5,000 Monthly Emails
  • 50 Monthly Scrapping Credits
  • 50 AI Template Generates
  • Unlimited campaigns
Pros
  • Target Identification feature
  • Automated email sequences
  • Campaign scheduling
  • Hyper-personalization capabilities
  • Audience persona identification
  • One-click Email sequence generation
  • Secure inbox
  • Numerous tech integrations
  • Geared towards newcomers and established businesses
  • Improves sender reputation
  • Prevents emails from spam
  • Unlimited email capabilities
  • Lead generation capabilities
  • CRM integration
  • Spam control
Cons
  • No A/B testing functionality
  • Inadequate targeting customization
  • Difficulty scaling campaigns
  • Lacks built-in CRM
  • Unspecified integration capabilities
  • Spam control limitations
  • Unclear pricing structure
  • No specific audience segmentation
  • Limited personalization features
  • No known reporting features

32 . Warmy

Best for boost email campaign success

Warmy is an AI-powered email warm-up tool designed to improve email deliverability by automating the warming up process. It aims to simplify email marketing and make it more efficient. The tool connects to your mailbox and uses an artificial intelligence engine named "Adeline" to optimize the warming up of your mailbox. Adeline analyzes numerous parameters daily, interacts with real people on your behalf, and ensures your emails consistently reach the inbox. Warmy offers features like Email Deliverability Checker, Email Health Checker, Email Activity Improvement, and ROI Calculator to enhance email campaigns. It also integrates with major email providers and popular apps to streamline workflows. Warmy provides users with a user-friendly and automation-driven solution to optimize email deliverability and improve email marketing campaigns.

Pros
  • The tool connects to your mailbox and utilizes an artificial intelligence engine called 'Adeline' to warm up your mailbox at an optimal pace.
  • Warmy provides full progress monitoring, offering a clear and transparent process so users can stay informed and in control.
  • Improves email activity by automatically opening, marking as important, and removing sent messages from the spam folder, thereby boosting your reputation as a sender.
  • Provides an ROI Calculator to estimate potential savings and return on investment for businesses.
  • Compatible with major email providers and offers integration with popular apps and tools, allowing users to streamline their workflows.
  • Quick setup process aims to save users weeks of frustration typically associated with email deliverability issues.
  • User-friendly and automation-driven solution to optimize email deliverability and enhance email marketing campaigns
  • Improves email deliverability
  • Automates warming up process
  • Utilizes artificial intelligence engine 'Adeline'
  • Provides full progress monitoring
  • Enhances email campaigns success
  • Boosts sender reputation
  • Offers ROI Calculator for businesses
  • Compatible with major email providers
Cons
  • No specific cons of using Warmy were found in the provided documents.
  • No specific cons or missing features mentioned in the document

33 . Salesforge

Best for ai-powered email personalization

Salesforge: 10X Pipeline offers a solution for email marketing tools that allows users to send unique emails at scale with personalized content through the use of AI technology leveraging seller and buyer data. This tool enables users to craft unique emails programmatically in various languages, using sources like LinkedIn profiles, websites, and AI-written messages to improve email reply rates and deliverability. It also provides warm-up email infrastructure to enhance deliverability and validates email addresses before sending, preventing spam issues. Users can manage all email-related activities in a unified view, enhancing efficiency in cold email outreach campaigns. The platform has received positive feedback from users who have praised its effectiveness in improving email deliverability, scalability, and response rates, making it a valuable tool for cold emailing at scale. Additionally, Salesforge offers features such as connecting multiple mailboxes, email warm-up, email address validation, and programmatically sending unique emails, all aimed at enhancing email outreach efficiency and success rates.

Pros
  • Salesforce helps customize emails at scale
  • Improved deliverability and sending capacity
  • Highly recommended for cold emailing at scale
  • 8x increase in response rate and open rates with AI-powered personalization
  • Validates email addresses before sending for better deliverability
  • Recommended for avoiding getting blocked by providers due to update
  • Easy to scale email output
  • Great support and regular addition of new features
  • No need to log into multiple mailboxes with Primebox™ for a unified view
  • Positive reviews and user-friendly platform
  • Toolsy platform with all features needed for personalized cold email outreach at scale
  • Highly recommended for cold emailing at scale with significant increase in response rates
  • Helps with deliverability by validating email addresses before sending out emails
  • AI-powered tech for super personalized emails leading to increased response and open rates
  • Allows crafting unique emails at scale in multiple languages
Cons
  • The main problem was that the software cost was not aligned to pipeline numbers.
  • The cost may not be justified based on the software cost not aligning well with pipeline numbers
  • No contact and company data provided, requiring users to upload their own lists
  • Limited language support for AI email generation compared to other tools in the industry
  • No database of contacts provided, must upload contact list manually
  • May require additional tools for lead generation as contact database not available
  • Limited language support for AI email generation
  • Annual subscription plans may limit flexibility for some users

34 . Nureply

Best for creating personalized cold email sequences

Nureply is an AI-powered platform designed to revolutionize the way businesses handle cold email outreach, offering personalized cold email sequences, a high inbox rate, and engagement in multiple languages. It simplifies connecting email accounts, crafting hyper-personalized messages, and driving sales through automation and drip campaigns. Nureply provides unlimited warmups, cold emails, lead uploads, and email accounts, along with real-time analytics for campaign monitoring. The platform is user-friendly and trusted by over 2500 users, including leading brands. Pricing plans range from $99 per month for the Starter plan to $30,000 for the Unicorn plan, offering various features like API access, Zapier integration, cold email writer, and priority support.

Pricing

Paid plans start at $99/month and include:

  • 1,500 AI Icebreaker Credits
  • Unlimited Cold Email Sequences
  • Unlimited Email Accounts
  • Unlimited Email Warmup
  • API Access
  • Zapier Integration
Pros
  • Unlimited Warmups and Cold Emails
  • Hyper-Personalized First Lines
  • Automation Platform
  • Real-time analytics
  • LinkedIn based personalization
  • Icebreaker Generate
  • AI Email Copywriter
  • Auto Generated Mails
  • Unlimited Inboxes
  • Unlimited Mails
  • Unlimited Email Account
  • Simple pricing, better cold emails
  • The Cold Email Software trusted by leading brands
  • Unlimited Personalization
  • Great reviews from great people
Cons
  • Lack of API Access with lower-tier pricing plans
  • Absence of Zapier Integration in lower-tier pricing plans
  • No Cold Email Writer in lower-tier pricing plans
  • No Priority Support in lower-tier pricing plans
  • No Account migration support in lower-tier pricing plans
  • Limited AI Icebreaker Credits in lower-tier plans compared to higher-tier plans
  • Some features like LinkedIn-based icebreaker personalization are not available in all plans
  • Variable-based personalization feature availability may vary across plans
  • Comparatively high price for the Unicorn plan at $30,000/lifetime
  • Potential difficulties in justifying value for money in relation to the price of the higher-tier plans
  • API Access is not available in the Starter plan
  • Zapier Integration is missing in the Starter plan
  • Cold Email Writer feature is absent in the Starter plan
  • Priority Support is not included in the Starter and Growth plans
  • Account migration support is lacking in the Starter and Growth plans

35 . Moosend

Best for crafting quick and effective email campaigns

Moosend is an email marketing and automation software that simplifies the process of delivering email marketing campaigns and automation experiences to drive revenue growth. It offers features such as a drag-and-drop newsletter editor, subject line A/B testing, content A/B testing, AI subject line optimizer, countdown timers, list segmentation, premade automation templates, a visual workflow builder, 100+ triggers, website activity tracking, and user action tracking. Moosend also provides tools for creating professional-looking landing pages, customizable templates, ultrafast loading pages, pixel tracking codes, and forms for email signups with advanced display rules.

Pros
  • Email marketing optimization
  • Personalized content generation
  • Data-driven user engagement
  • Aligns with marketing goals
  • Contextually relevant content
  • Leverages creative strategy
  • Unique content creation
  • Tracks user interests
  • Advanced data analysis
  • Precision marketing tool
  • Potential improved marketing returns
  • Capable of adapting dynamically
  • Capable of learning from data
  • Creativity and strategy integration
  • Provides competitive edge
Cons
  • No multi-channel support
  • No real-time data analysis
  • Requires creative input from users
  • No predictive analytics
  • Limited to email marketing
  • No integration with CRM
  • Limited to defined marketing goals
  • No adaptive learning capability
  • Doesn't support A/B Testing
  • Lacks campaign performance tracking
  • No real-time data analyzes

36 . Klaviyo

Best for boost your email campaign engagement

Klaviyo SMS Assistant is a feature of the Klaviyo email and SMS marketing platform that offers several functionalities:

  1. Customer Understanding: It provides comprehensive profiles of customers, including their past, present, and future behavior.

  2. Product Recommendations: Utilizes customer data to recommend products tailored to individual preferences.

  3. Cross-Channel Tracking: Allows for accurate attribution and conversion tracking across different channels.

  4. AI-Powered Campaigns: Enables the use of AI for automated SMS and email campaigns, segment creation, and responses to reviews.

  5. Targeted Audience Reach: Real-time segment building based on predictive, profile, and activity data from various sources.

  6. Performance Benchmarking: Offers insights through peer benchmarks to compare performance against similar brands.

Klaviyo was founded in 2012 by Andrew Bialecki and Ed Hallen to address the challenge of leveraging customer data for personalized marketing. The platform now serves over 151,000 brands globally, empowering creators with tools and strategies to enhance control and drive success in their respective industries .

37 . Goemailtracker

Best for optimizing email marketing campaigns

GoEmailTracker is a Google Mail extension designed for email marketing purposes. It tracks recipient engagement metrics such as opens, clicks on links, click-through rates, and geolocations to optimize email campaigns. The tool also includes AI email writing capabilities with chatGPT and OpenAI, along with advanced security features for data protection. It offers both free and premium plans with advanced tracking features available in the premium plan.

The tool works by monitoring and analyzing email performance in Google Mail, providing detailed reports and real-time notifications when emails are opened. To install GoEmailTracker, users need to download and install the extension from the Google Chrome store and activate it in the browser settings. While primarily designed for Google Mail, it also works with the new Chromium-based Microsoft Edge.

GoEmailTracker tracks various metrics from emails such as the number of opens, clicks on specific links, and the geolocation of recipients. It ensures data privacy compliance and does not share data with third parties.

The AI email writer feature in GoEmailTracker allows users to create email templates using AI, leveraging technologies like chatGPT and OpenAI. The premium plan of GoEmailTracker includes features such as complete email opens tracking history and statistics, saving multiple email templates, and full link click tracking history and statistics, costing $1 per month per email account billed annually. It also offers real-time notifications, 24/7 support, and geolocation tracking of recipients.

Pricing

Paid plans start at $1/month and include:

  • Unlimited emails tracking
  • Email open history & statistics
  • Link click history & statistics
  • Show badge not opened after 24 hours
  • Show badge on link clicked
  • Live notification on email open/click
Pros
  • Detailed reports and analytics
  • Real-time email tracking
  • Tracks email opens
  • Tracks link clicks
  • Recipients' geolocation tracking
  • Advanced security features
  • Real-time notification pop-ups
  • Improves email campaign performance
  • Identifies engaged recipients
  • Increases conversions
  • Open rate tracking
  • Link tracking
  • CTR tracking
  • 24/7 support system
Cons
  • Only for Google Mail
  • Limited email templates
  • Charges for comprehensive tracking
  • Limited to Chrome and Edge
  • No mentioned mobile support
  • Real-time notifications can be intrusive

38 . ittybrief

Best for crafting concise email campaign summaries.
Ittybrief is an innovative email marketing tool designed to deliver personalized newsletters directly to users’ inboxes. Tailored to individual interests, this platform provides daily briefings on current affairs, allowing subscribers to stay updated on the topics that matter most to them. By curating relevant content, Ittybrief ensures that users receive news that aligns with their passions, effectively transforming their email experience. In addition to personalized content, Ittybrief emphasizes the importance of email deliverability, offering practical tips to prevent newsletters from landing in the spam folder. Users can enhance their experience by marking messages as “not spam,” adding the sender to their contacts, and reaching out to support if issues arise. With Ittybrief, staying informed has never been more tailored or accessible.

39 . Campaigny

Best for easy-to-use email campaign creation

Campaigny is a sophisticated email marketing tool designed to simplify the management of newsletter communications. It offers an intuitive platform for creating, sending, and tracking newsletters efficiently, without requiring extensive technical knowledge. Campaigny provides a user-friendly interface and powerful features to help organizations of all sizes maintain effective communication channels with subscribers. With tools for simplified newsletter creation, subscriber management, effortless sending, tracking and analytics, and customization options, Campaigny ensures that businesses and nonprofits can engage subscribers with well-crafted newsletters that reflect their brand identity. It is suitable for all sizes of businesses, including non-profits, and offers features to measure the success of newsletters and customize them to fit brand identity.

40 . UniqMail

Best for personalized campaigns that boost engagement
UniqMail is an innovative email marketing tool designed to enhance the personalization of email campaigns through advanced AI technology. It empowers users to effortlessly create, manage, and distribute tailored email campaigns while maintaining complete oversight of their projects. By integrating API keys from platforms like OpenAI or Google Gemini, UniqMail adds a unique personal touch to each message, ensuring they resonate with recipients. This intuitive platform accommodates unlimited project creation, enabling users to craft messages that truly reflect their brand’s voice. Additionally, by allowing direct sending from users' email accounts, UniqMail significantly reduces the likelihood of emails being flagged as spam. Its versatility is evident in its compatibility with both MacOS and Windows, with upcoming support for Linux. What sets UniqMail apart is its commitment to offering robust features at no cost, eliminating subscriptions or hidden fees, while also prioritizing user privacy by storing all data locally on the user's device. With UniqMail, marketers can elevate their email strategies without compromising on quality or security.

41 . GetResponse

Best for boost open rates

GetResponse Email Generator is an affordable and easy-to-use platform for sending emails, growing your email list, and automating communication. It offers features such as AI-powered email marketing, automated email scenarios, landing pages, websites, signup forms, and popups. Additionally, GetResponse provides 24/7 support from a 5-star rated Customer Success Team and has a 99% deliverability rate for over 160 countries. The platform also allows users to easily connect with other tools to keep data up-to-date, automate workflows, and enhance customer experience. Pricing starts from $19 per month and includes various features like unlimited monthly emails, AI-powered email marketing, and more. GetResponse aims to empower businesses with intuitive email marketing software tailored to the diverse needs of customers, as demonstrated by its growth and development over the years.

Pricing

Paid plans start at $19/month and include:

  • Unlimited monthly emails
  • AI-powered email marketing
  • Automated email scenarios
  • Landing pages and websites
  • Signup forms and popups
Pros
  • Affordable email platform
  • Easy to use for sending emails and growing lists
  • Automate communication
  • High deliverability rate
  • 24/7 customer support
  • Wide range of customers worldwide
  • Integrations with other tools for data synchronization and workflow automation
  • Affordable platform for email sending, list growth, and communication automation
  • 99% deliverability rate for 160+ countries
  • 24/7 support from a 5-star rated Customer Success Team
  • Easily connect other tools with GetResponse
  • AI-powered email marketing features
  • Automated email scenarios
  • Landing pages and websites included in plans
  • Signup forms and popups for lead generation
Cons
  • No specific cons or missing features were identified in the document.
  • No specific cons or missing features were found in the provided documents.

42 . Mailberry

Best for ai-powered email generation

Mailberry is an AI-powered email marketing platform that provides a fully managed email marketing solution. It automates email creation, audience segmentation, personalization, and analytics to cater to businesses of all sizes and individuals with varying levels of marketing expertise. The platform allows users to paste prompts like tweets, offers, or product descriptions, and then generates professionally written, conversion-focused emails with subject lines. Mailberry also offers comprehensive support, access to a team of email marketing experts, and resources to help maximize email marketing results.

The founder and CEO of Mailberry, Alec Beglarian, has over 2 decades of experience in the email space and has managed nearly 10 billion emails for clients. Mailberry is designed with the right infrastructure, knowledge, and expertise to give users an edge in email marketing while saving time. The platform is backed by many years of consulting and email marketing experience, providing powerful and fully managed email marketing services with world-class email deliverability.

Mailberry's platform is distinguished from traditional email platforms like MailChimp or Klaviyo by offering a fully 'done-for-you' email marketing solution. It handles everything from email creation to analysis, essentially putting email marketing on autopilot. Mailberry's platform is ideal for startups, Inc 5000 companies, and businesses looking for a streamlined and efficient email marketing solution.

Pricing

Paid plans start at $195/month and include:

  • Email Software
  • Email Designer
  • Email Copywriter
  • Email Automation
  • Email Analyst
  • All-in-one platform
Pros
  • Trusted by brands ranging from startups to Inc 5000 companies
  • Handles email marketing, allowing focus on business growth
  • All-in-one solution to optimize email marketing
  • Expert team maximizes email performance and revenue
  • Assistance in overcoming time and resource constraints
  • Help with audience management and maintaining email lists
  • Support with content creation for engaging and relevant emails
  • Assistance in measuring ROI and analytics
  • Guidance on email strategy and best practices
  • Expertise in improving email deliverability and inbox placement
  • Partner with over 20 years of experience in email marketing
  • Combines technology and experience for optimal results
  • Comprehensive approach including email strategy and copywriting
  • Platform pre-optimized for email deliverability
  • Guaranteed actionable insights from strategy call
Cons
  • No specific cons or missing features mentioned for Mailberry in the provided documents.
  • Possible missing features compared to other AI email marketing tools in the industry
  • May not offer all the advanced features present in other AI tools
  • Price may not be justified depending on the available features
  • May have limitations in customization options
  • Integration capabilities may be limited
  • User interface may not be as intuitive as competitors
  • Customer support quality could be a potential concern
  • Performance in specific email marketing scenarios may be subpar compared to other tools
  • Reporting and analytics features may be lacking in depth
  • Could have restrictions in terms of email template varieties
  • High starting price of $195 compared to other email marketing platforms
  • Missing features compared to other AI tools in the industry
  • May not justify value for money when considering the price
  • Potential for lack of control over email content

43 . Mailforge

Best for seamless cold email campaign management
Mailforge stands out as a robust platform tailored for cold email outreach, offering an efficient infrastructure for managing email campaigns. With the ability to swiftly establish multiple email domains and mailboxes, it significantly boosts deliverability rates. Starting at a budget-friendly $3 per mailbox and dropping to as low as $1.75, Mailforge ensures that users can scale their outreach without financial strain. Its advanced Overdrive AI model enhances the performance of email campaigns, allowing for rapid deployment and management. For those looking to understand its features better, Mailforge provides a demo video that showcases its user-friendly interface and automated capabilities, making it an ideal choice for anyone serious about their email marketing strategy.

Pricing

Paid plans start at $3/month and include:

  • Premium Deliverability
  • Automated Setup
  • Scalability
  • Cost-Effectiveness
  • Overdrive AI Model
Pros
  • Premium Deliverability: Ensures high delivery rates for cold email campaigns.
  • Automated Setup: Free and easy automatic configuration of domains and mailboxes.
  • Scalability: Enables the creation of hundreds or thousands of mailboxes and domains quickly.
  • Cost-Effectiveness: Competitive pricing starting at $3, with the possibility of going as low as $1.75 per mailbox.
  • Overdrive AI Model: An advanced AI model to optimize the cold email infrastructure setup process.
Cons
  • No specific cons or missing features were mentioned in the document for Mailforge.

44 . Kundy

Best for automate personalized email campaigns

Kundy: Revolutionizing Email Marketing with AI-Powered Solutions

Kundy is an innovative AI-powered customer contact and CRM system that is transforming the landscape of email marketing. By harnessing the power of AI technology, Kundy automates a personalized approach to email marketing, enhancing engagement and visibility for businesses.

This cutting-edge tool enables users to identify and study the online behavior of ideal customers, allowing for the creation of personalized emails that resonate with recipients and drive customer engagement. Through advanced AI techniques, Kundy targets specific customer segments based on company location, branch, and size, ensuring a tailored approach to email campaigns.

One of Kundy's standout features is its ability to bypass spam filters by crafting emails that mimic regular person-to-person communication, increasing the likelihood of reaching recipients effectively. With a database of over 750,000 Swedish companies across 1400 categories, Kundy offers extensive targeting capabilities for businesses looking to reach their desired audiences.

Furthermore, Kundy generates detailed reports that provide valuable insights into recipient reactions, email campaign performance, and customer behavior. By offering visibility enhancement, personalized email marketing, and CRM system integration, Kundy stands out as a comprehensive solution for businesses seeking to enhance their email marketing strategies.

In conclusion, Kundy's AI-driven approach offers a unique and effective way to optimize outbound email marketing efforts, empower sales teams, and achieve remarkable response rates of over 50%. By leveraging Kundy's smart marketing platform, businesses can streamline their marketing initiatives, deliver superior results, and experience the transformative power of AI in their campaigns.

Pros
  • Personalized direct email marketing
  • Automates personal approach
  • Identifies ideal customers
  • Studies customer online behavior
  • Bypasses spam filters
  • Targets based on company details
  • Database of 750K+ Swedish companies
  • 1400 categories of companies
  • Email delivery management
  • Generates detailed reports
  • Tracks email campaign performance
  • Insights into recipient reactions
  • Enhances customer engagement
  • Drives sales
  • Boosts sales team productivity
Cons
  • Targets mainly Swedish market
  • Limited to email marketing
  • Risk of over-personalization
  • Relies on quality database
  • Lack of integrations
  • No mobile application
  • Limited customer support
  • Potential privacy issues
  • No omnichannel support

45 . Robin Ai

Best for automated email personalization

Robin AI is an innovative platform categorized under "Email Marketing Tools" that leverages advanced artificial intelligence to streamline the sales process. It automates the top of the sales funnel by reaching out to leads, conducting research, and handling initial outreach without the need for human intervention. The platform is designed to craft emails based on lead information and can generate objection emails when needed. Robin AI aims to facilitate the booking of sales calls efficiently. Additionally, it offers features like personalized sales advice, real-time insights, and expert support to enhance sales performance and drive better results for businesses. The platform integrates with major CRMs, SMS, chat, and voice, making it a comprehensive tool for targeted outreach, email campaigns, customer retention, and top-of-funnel lead generation .