A bulk email sender is a software tool that helps businesses send large volumes of emails—such as newsletters, promotional campaigns, transactional updates, and announcements—to thousands of recipients at once, while ensuring high inbox delivery and compliance with email regulations.

Whether you’re a startup, SaaS company, ecommerce brand, or enterprise marketer, choosing the right bulk email sender can directly impact open rates, conversions, and sender reputation.

In this guide, you’ll learn:

• What a bulk email sender is and how it works
• Key features to look for in a bulk email sending tool
• Common use cases for businesses
• Why Mailercloud is a reliable bulk email sender for scalable email campaigns

What Is a Bulk Email Sender?

A bulk email sender is a software tool that allows businesses to send large volumes of emails—such as newsletters, promotional campaigns, and transactional updates—to targeted contact lists at scale.

Unlike regular email clients, bulk email senders are built to improve deliverability, automate campaigns,
and provide detailed analytics to optimize email performance.

Must-Have Features of a Bulk Email Sender

A reliable bulk email sender typically includes the following features:

• Contact segmentation and tagging
• Free plan or trial availability
• Drag-and-drop email builder
• Email tracking and performance analytics
• Automation workflows for campaigns

These features help businesses manage bulk email campaigns efficiently while maintaining inbox placement and engagement.

How Does a Bulk Email Sender Work?

A bulk email sender works by allowing businesses to send a single email campaign to thousands of recipients through a specialized email infrastructure designed for scale and deliverability.

Here’s how bulk email sending typically works:

• Upload or sync your contact list into the bulk email sender
• Segment contacts based on behavior, tags, or demographics
• Create an email using a drag-and-drop builder or templates
• Authenticate your domain to improve inbox placement
• Schedule or send the campaign to your audience
• Track opens, clicks, bounces, and engagement metrics

This process helps businesses send bulk emails efficiently while maintaining sender reputation and compliance.

Why Businesses Use Bulk Email Sending Software

Businesses use bulk email sending software to communicate with large audiences efficiently
while maintaining control over deliverability, engagement, and compliance.

Bulk email senders are commonly used for:

• Sending newsletters and product updates to subscribers
• Running promotional and seasonal email campaigns
• Sharing transactional and account-related emails
• Nurturing leads and onboarding new customers
• Re-engaging inactive contacts at scale

By using bulk email sending software, businesses can scale email communication without relying on manual or unreliable email methods.

Key Features of a Good Bulk Email Sender

A good bulk email sender should do more than just send emails at scale. It should help businesses improve deliverability, manage contacts efficiently, and optimize campaigns for better engagement and results.

1. High Deliverability Infrastructure

A reliable bulk email sender uses dedicated sending infrastructure, domain authentication, and reputation monitoring to ensure emails land in inboxes instead of spam folders.

2. Contact Management, Segmentation, and Tagging

Advanced contact management allows businesses to organize subscribers using tags, lists, and behavioral data, making it easier to send targeted and relevant emails.

3. Automation and Workflow Capabilities

Automation features enable businesses to create workflows for welcome emails, follow-ups, lead nurturing, and re-engagement campaigns without manual effort.

4. Drag-and-Drop Email Builder and Templates

A user-friendly email builder with pre-designed templates helps teams create professional emails quickly, without requiring coding skills.

5. Email Tracking and Performance Analytics

Detailed analytics such as open rates, click-through rates, bounces, and unsubscribes help businesses measure campaign performance and optimize future sends.

6. SMTP Relay and Email API Access

For developers and growing businesses, SMTP relay and Email APIs allow bulk emails and transactional messages to be sent programmatically and at scale.

7. Compliance and Security Support

A good bulk email sender supports compliance with regulations like GDPR and CAN-SPAM, offering features such as unsubscribe management, consent tracking, and secure data handling.

These features help businesses run bulk email campaigns efficiently while protecting sender reputation and improving engagement.

Best Bulk Email Sender Software for Businesses

Below is a comparison of popular bulk email senders and email marketing platforms, including tools that offer free plans for sending emails at scale.

Bulk Email Sender	Best For	Standout Feature	Free Plan
Mailercloud	High deliverability & automation	AMP support & segmentation	1,000 subscribers & 12,000 emails/mo
Sender	Affordable bulk emailing	Workflows & segmentation	2,500 subscribers & 15,000 emails/mo
Brevo	Transactional emails & SMS	CRM & SMS marketing	300 emails/day
Mailchimp	Beginners	A/B Testing & Templates	500 contacts & 1,000 emails/mo
SendGrid	Developers	Email API & validation	100 emails/day
Constant Contact	Events & SMBs	Event tools	60-day free trial
GetResponse	AI-based automation	AI email optimization	500 contacts
Campaign Monitor	Reporting & templates	Behavioral targeting	Trial only
AWeber	Newsletters & SMBs	Responsive templates	500 subscribers & 3,000 emails/mo
Moosend	Budget users	Unlimited emails on paid plans	250 subscribers

Best Bulk Email Sender Software for Businesses

1. Mailercloud (Best for Deliverability and Automation)

Mailercloud is a bulk email sender designed for businesses that need reliable deliverability, email automation, and scalable campaign management. It supports both marketing and transactional email use cases, making it suitable for startups, SMBs, and growing businesses.

Key strengths:

• Drag-and-drop email builder – Create campaigns without coding
• Automation workflows – Set up lead nurturing and engagement sequences
• AMP email support – Enable interactive email experiences
• Deliverability-focused infrastructure – Improves inbox placement
• Segmentation and contact tagging – Supports targeted campaigns
• Free plan available – Suitable for startups and small businesses

Limitations:

• Advanced automation features are better suited for growing teams
• High-volume senders may need to upgrade to paid plans
• Not designed specifically for cold email outreach

Mailercloud supports automation workflows for common email use cases such as welcome emails, cart abandonment, and drip campaigns. Businesses can segment audiences based on behavior and track engagement in real time to improve campaign performance.

The platform also integrates with popular CRM, ecommerce, and productivity tools, helping teams manage subscribers and execute campaigns more efficiently.

Mailercloud Pricing:

Free for up to 1,000 subscribers and 12,000 emails per month. Paid plans unlock advanced features like additional automation steps and higher sending limits.

2. Sender (Best for Budget-Friendly Bulk Emailing)

Sender is a cost-effective bulk email sender suitable for businesses that want to send mass emails
while maintaining reasonable deliverability and ease of use.

It is commonly used by small businesses and startups looking for basic email marketing
and automation features without a high upfront cost.

Key strengths:

• Drag-and-drop email editor – Easy to design professional emails without technical skills
• Pre-built automation workflows – Supports basic email sequences and lead nurturing
• Advanced segmentation – Enables personalized email campaigns
• Popup and lead generation tools – Helps grow email subscriber lists
• Ecommerce and CRM integrations – Works with platforms like Shopify and WooCommerce

Limitations:

• Limited email template variety on the free plan
• Advanced automation features are restricted compared to premium platforms
• Reporting and analytics are more basic for large-scale campaigns

Pricing:

Free plan supports up to 2,500 subscribers and 15,000 emails per month. Paid plans provide additional automation features and customization options.

3. Brevo (Best for Email, SMS, and Transactional Messaging)

Brevo (formerly Sendinblue) is an all-in-one bulk email sender that supports both marketing and transactional email use cases, along with SMS messaging.

It is commonly used by businesses that need multi-channel communication and built-in CRM capabilities to manage customer interactions.

Key strengths:

• Email and SMS marketing – Supports bulk emails and text messaging
• Automation workflows – Enables behavior-based email triggers
• Built-in CRM – Helps store and manage customer data
• Transactional email support – Suitable for order confirmations and notifications
• Deliverability-focused infrastructure – Helps improve inbox placement

Limitations:

• Free plan includes daily email sending limits
• Some advanced reporting and automation features require paid plans
• Interface may feel complex for beginners

Pricing:

Free plan allows up to 300 emails per day. Paid plans start at approximately $25 per month, depending on usage and features.

4. Mailchimp (Best for Advanced Email Marketing)

Mailchimp is a widely used email marketing platform known for its beginner-friendly interface and broad feature set for managing email campaigns.

It is commonly chosen by small businesses and teams that are new to email marketing and want an easy way to create, send, and test email campaigns. You must always remember to send test emails before you publish your campaign.

Key strengths:

• Drag-and-drop email editor – Easy to design emails without technical expertise
• Pre-built automation – Supports basic automated email sequences
• Audience segmentation – Helps deliver targeted and relevant content
• A/B testing – Allows optimization of subject lines and campaign content
• Ecommerce and CRM integrations – Works with multiple third-party platforms

Limitations:

• Automation capabilities are limited on the free plan
• Pricing increases significantly as contact lists grow
• Advanced features are restricted to higher-tier plans

Pricing:

Free plan supports up to 500 contacts and 1,000 emails per month. Paid plans start at approximately $13 per month, depending on features and list size.

5. SendGrid (Best for Developers and API-Based Email Sending)

SendGrid is a developer-focused bulk email sender designed for businesses that require high-volume email sending through API-based integrations.

It supports both transactional and marketing email use cases, making it suitable for applications that rely on automated messaging and custom workflows.

Key strengths:

• API-first approach – Enables seamless integration for developers
• Transactional and marketing email support – Suitable for automated notifications and campaigns
• Advanced analytics – Provides real-time tracking and performance insights
• Email validation tools – Helps maintain list quality and deliverability

Limitations:

• Requires technical knowledge to fully utilize API features
• Advanced tools and higher sending limits require paid plans
• Limited visual campaign builder compared to marketing-focused platforms

Pricing:

Free plan allows up to 100 emails per day. Paid plans start at approximately $15 per month, depending on usage and features.

6. Constant Contact (Best for Small Businesses and Event Marketing)

Constant Contact is a bulk email sender commonly used by small businesses, non-profits, and organizations that focus on event-based and newsletter-driven email campaigns.

It offers a range of customizable email templates and basic automation tools, along with features designed to support event promotion and audience engagement.

Key strengths:

• Customizable email templates – Suitable for professional-looking campaigns
• Event management tools – Helpful for webinars, workshops, and product launches
• List segmentation – Enables targeted email communication
• Social media integrations – Supports multi-channel engagement

Limitations:

• No permanent free plan available
• Automation capabilities are limited compared to more advanced platforms
• Pricing increases as contact lists grow

Pricing:

Paid plans start at approximately $12 per month. A 30-day free trial is available for new users.

7. GetResponse (Best for Automation, Webinars, and Lead Generation)

GetResponse is an all-in-one email marketing platform designed for businesses that need advanced automation along with built-in tools for lead generation and audience engagement.

It is commonly used by marketers, SaaS companies, and educators who want to combine email campaigns with landing pages and webinar-based marketing.

Key strengths:

• AI-powered email optimization – Helps improve open and click rates
• Automation workflows – Supports drip campaigns and lead nurturing
• Webinar hosting – Enables live and automated webinars
• Landing page builder – Allows creation of conversion-focused pages
• Multi-channel marketing tools – Combines email, forms, and webinars

Limitations:

• Free plan access is limited to basic features
• Advanced segmentation and automation require higher-tier plans
• Interface may feel complex for beginners

Pricing:

Free plan availability is limited. Paid plans start at approximately $9 per month, depending on features and list size.

8. Campaign Monitor (Best for Design-Focused and Data-Driven Campaigns)

Campaign Monitor is a bulk email sender commonly used by businesses that prioritize email design, personalization, and detailed campaign reporting.

It is suitable for marketing teams that want visually consistent emails and actionable insights to optimize engagement and performance.

Key strengths:

• Drag-and-drop email designer – Supports highly customizable templates
• Behavioral targeting – Enables personalized emails based on user actions
• Detailed reports and analytics – Provides insights into opens, clicks, and engagement
• Transactional email support – Useful for ecommerce-related messaging

Limitations:

• No permanent free plan available
• Pricing is based on email volume, which can increase costs for high-volume senders
• Limited automation features compared to all-in-one platforms

Pricing:

Paid plans start at approximately $9 per month. A free trial is available for new users.

9. AWeber (Best for Small Businesses and Email Newsletters)

AWeber is a bulk email sender commonly used by small businesses and entrepreneurs who want a straightforward platform for creating and sending email campaigns.

It focuses on ease of use, responsive email design, and basic automation tools to help businesses manage subscriber communication effectively.

Key strengths:

• Responsive email templates – Mobile-friendly and professionally designed
• List management and segmentation – Supports targeted email communication
• A/B testing – Enables optimization of subject lines and content
• Landing page builder – Helps capture leads and grow subscriber lists

Limitations:

• Automation features are limited on the free plan
• Does not include built-in SMS marketing
• Advanced workflows require higher-tier plans

Pricing:

Free plan supports up to 500 subscribers and 3,000 emails per month. Paid plans start at approximately $19.99 per month, depending on features and list size.

10. Moosend (Best for Affordable Automation and High-Volume Sending)

Moosend is an AI-powered bulk email sender designed for businesses that need
advanced automation and segmentation at a cost-effective price point.

It is commonly used by small to mid-sized businesses that send frequent newsletters
or promotional campaigns and want unlimited email sending on paid plans.

Key strengths:

• Drag-and-drop email builder – Easy creation of professional campaigns
• Advanced automation – Supports behavior-based and AI-driven workflows
• Unlimited emails on paid plans – Suitable for high-volume sending
• Landing page and form builder – Helps capture leads and grow email lists

Limitations:

• Free plan offers limited customization and features
• Integration options are fewer compared to larger platforms
• Reporting tools may feel basic for advanced analytics needs

Pricing:

Free plan supports up to 250 subscribers. Paid plans start at approximately $9 per month, depending on features and list size.

How to Send Bulk Emails Without Deliverability Issues

Sending bulk emails at scale can lead to deliverability challenges if best practices are not followed.
Many businesses experience issues such as emails landing in spam folders or delivery failures
when using basic email clients or poorly configured sending tools. Learn more about What is Mailer Daemon and How to Fix It.

To send bulk emails successfully and maintain inbox placement, follow these best practices:

Authenticate your emails – Configure SPF, DKIM, and DMARC to establish sender credibility and protect your domain reputation.

Optimize your email content – Avoid spam-triggering words, excessive capitalization, and misleading subject lines to improve engagement and deliverability.

Use a reliable bulk email sender – Dedicated bulk email software provides proper sending infrastructure, reputation management, and compliance support.

Set up email sequences – Automate follow-ups and nurture campaigns to improve open rates and maintain consistent engagement.

Monitor deliverability metrics – Regularly track bounce rates, spam complaints, open rates, and clicks to identify and fix issues early.

Choosing the Best Bulk Email Sender for Your Business

Choosing the right bulk email sender depends on your business goals, email volume,and the level of automation and deliverability support you need.

Whether you’re sending newsletters, promotional campaigns, or transactional messages, a reliable bulk email sender helps automate workflows, improve engagement, and maintain inbox placement at scale.

What to look for in a bulk email sender:

• Easy-to-use email templates or HTML editor for fast campaign creation
• SMTP relay or Email API for transactional messaging
• Automation workflows for drip campaigns and segmentation
• Deliverability-focused infrastructure and authentication support
• Scalable sending limits suitable for business growth

Choosing the Best Bulk Email Sender for Your Business

Choosing the right bulk email sender depends on your business goals, email volume, and the level of automation and deliverability support you need.

Whether you’re sending newsletters, promotional campaigns, or transactional messages, a reliable bulk email sender helps automate workflows, optimize engagement, and maintain inbox placement at scale.

What to look for in a bulk email sender:

• Easy-to-use email templates or HTML editor for fast campaign creation
• SMTP relay or Email API support for transactional messaging
• Automation workflows for drip campaigns and audience segmentation
• Deliverability-focused infrastructure and authentication support
• Scalable sending limits that grow with your business

For businesses that want a balance of usability, automation, and deliverability, platforms like Mailercloud provide bulk email sending capabilities without requiring advanced technical expertise.

Final Thoughts on Bulk Email Marketing

Bulk email marketing remains one of the most effective ways for businesses to communicate with their audience when executed strategically.

By using the right bulk email sender, businesses can automate campaigns, optimize engagement, and send emails at scale without deliverability issues.

Whether you’re a startup or an enterprise, choosing a reliable bulk email platform helps ensure consistent communication, better inbox placement, and long-term email marketing success.

Frequently Asked Questions

What is the best bulk email sender?
Some of the best bulk email senders include Mailercloud, Brevo (formerly Sendinblue), Mailchimp, Constant Contact, Moosend, and Omnisend. These platforms offer features like high deliverability, easy-to-use templates, automation tools, and detailed analytics to support your email marketing campaigns.

How can I send 1000 emails for free?
Many bulk email tools offer free plans that allow you to send up to 1000 emails per month. Mailercloud, for example, offers a free plan that supports thousands of email sends with essential features included. Always check the sending limits and verify your email list quality to avoid delivery issues.

How to send 100 emails at once?
You can send 100 emails at once by using a bulk email platform like Mailercloud. Simply create your email content, upload your recipient list, and use the platform’s mass send feature. Make sure your email follows anti-spam regulations and includes an easy way for recipients to unsubscribe.

How can I send 10,000 emails a day?
To send 10,000 emails a day, you’ll need a scalable bulk email service with high daily sending limits. Mailercloud’s scalable plans allow businesses to send high volumes daily while ensuring excellent deliverability. For best results, authenticate your domain with SPF, DKIM, and DMARC settings, and warm up your IP if needed.

Can I send bulk emails for free?
Yes, some bulk email platforms like Mailercloud offer free plans that allow you to send a limited number of bulk emails per month. However, for higher sending limits and advanced features, upgrading to a paid plan is recommended.

How do I choose the best bulk email sender for my business?
Look for features like deliverability rates, automation, ease of use, scalability, reporting tools, pricing, customer support, and integrations with other tools you use. Always start with a free trial before committing to a paid plan.