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A mass email service lets you message your entire list for large-scale communication efforts such as promotional newsletters and company announcements.
Bulk emails reach the broadest possible audience and serve multiple purposes. While promotions are the most obvious use, they also help you clean your email list by identifying inactive subscribers and segmenting engaged users for more targeted messaging.
The best free mass email senders have sending limits that satisfy your list size, automations for trigger-based sending, and integration with your ecommerce platform to populate messages with shoppable products.
Join us below to discover seven free mass mailers that meet these criteria and tips on choosing the best software for your needs.
Try Omnisend today to create mass email campaigns and save time with automated workflows
Omnisend’s free plan lets you reach 250 contacts/month and send 500 emails/month. It’s the best choice for ecommerce stores and marketers wanting to send bulk campaigns and cover all stages of the customer journey with automated emails.
Key features
Send bulk email campaigns to all subscribers or segments
Drag-and-drop email builder with product recommender and discount items
Free plan limitations
250 contacts/month send limit (although there are no limits on your total contacts)
500 emails/month send limit
Emails have a “Powered by Omnisend” badge
Overall
Because there are no standard feature limits in Omnisend’s free plan, it is by far the most comprehensive email marketing tool for ecommerce. Use it to build your list, send bulk emails, create personalized campaigns, and automate transactional messages.
Rachel Riley increased its Black Friday sales by 77% with Omnisend. Its automated workflows generated 46% of revenue across email and SMS channels.
Sender supports 2,500 subscribers and 15,000 emails/month in its free plan. It’s suitable for small ecommerce and service-based businesses, with the option to purchase additional email credits for occasional blasts.
Key features
Bulk campaigns
Email templates with image library
Drag-and-drop template builder
Unlimited segmentation
Campaign reports, including heatmap/clicks
Free plan limitations
One user
No phone support
No auto resend to non-openers
Overall
A 15,000 email send limit makes Sender a worthwhile bulk email tool for small ecommerce stores. Its templates lack the professionalism of other tools, but are editable and include conversion elements like a product picker.
3. Brevo
Best for: Marketers with large daily sending requirements
Brevo stands out as one of the most generous bulk email services, offering a free plan that allows you to send 300 emails/day. It comes at the expense of a landing page builder, popups, A/B testing, and phone and chat support, but otherwise supports basic marketing requirements.
Key features
Send more daily emails than other tools
Drag-and-drop email builder plus template library
Visual automation builder
Transactional emails
Real-time email statistics
Free plan limitations
No web push notifications
No popups
No predictive sending
Email support only
Brevo branding
Overall
Brevo’s large sending limit suits mass email campaigns, but the free plan’s limited features make it unsuitable for comprehensive email marketing. Choose it for bulk emails, but consider using a more feature-rich tool for other activities.
4. Mailtrap
Best for: Businesses focused on email deliverability and inbox placement
Mailtrap is an email delivery platform great for marketing teams to send mass email campaigns focusing on high email deliverability rate. It offers a separate email infrastructure, Bulk Stream for mass email sending, which guarantees your emails will land in the recipient’s inbox.
Key features
Intuitive drag and drop email builder with AI
HTML email editor for template customization
In-depth analytics and reports for metrics such as open, click, bounce rates, and spam complaints
Straightforward contacts and list management, with custom fields and events included
Free plan limitations
1,000 emails/month (daily limit of 200)
Maximum email size of 10MB
1 inbox and project
100 contacts only
Overall
Mailtrap stands out for its high deliverability rates, intuitive analytics with visual dashboards, and quick support from deliverability experts. However, it falls short in certain areas, such as lacking a dedicated A/B testing feature, offering no pre-made email templates, and depending on Zapier for automations and integrations.
GetResponse’s free account supports 2,500 emails/month and lets you add up to 500 contacts during the first 30 days. You can use newsletter templates, the landing page builder, and limited automations to cover some workflows, such as welcome emails.
Key features
Email marketing campaigns
Visual email builder
Landing page builder
Signup and contact forms
Free plan limitations
No promo codes in emails
No abandoned cart triggers
No recommended products
No ecommerce tracking
Overall
The lack of dynamic newsletter features, such as promo codes and recommended products, means GetResponse’s free plan suits non-ecommerce email blasts. Consider it if you’re a small business wanting to send generic mass emails.
HubSpot is a marketing suite with a Free Tools plan for up to two users. It includes a marketing email sender, templates, and AI writing assistance. You can send 2,000 emails/month and personalize campaigns using data within the Customer Relationship Management (CRM) tool.
Key features
2,000 emails/month
CRM imports and exports
Supports up to 100 products
Email templates and editor
Free plan limitations
500 emails/day
10 active lists
HubSpot branding
No campaign reporting
No ecommerce automation workflows
Overall
Hubspot’s strength is its CRM with imports and exports. Its free email tools lack ecommerce features, A/B testing, and other goodies, but it’s a decent option to send bulk emails for general marketing purposes.
7. Mailchimp
Best for: Small businesses with basic marketing needs
Mailchimp’s free plan has a 500 contact and 1,000 emails/month sending limit. Its campaign-building tools are fast to master for small businesses, but significant feature restrictions in the free plan could outweigh the generous sending limit.
Key features
Email campaign builder
Landing pages and forms
Single-step automations
Basic reports
Personalized product recommendations in email builder
Free plan limitations
1,000 emails/month (daily limit of 500)
500 contacts
No email scheduling
Limited audience insights
Mailchimp branding
Single-step automations are not suitable for complex workflows
Overall
The advantage of Mailchimp is that it’s incredibly easy to use and provides basic tools for email marketing. If you want a tool to jump into for bulk emails, it works well, albeit at the expense of ecommerce features that can improve your customer experience.
How to choose the best mass email service
Follow these steps to pick the best-fit bulk email software:
Compare sending limits
Review each tool’s email and contact list limits. A massive allowance (such as 12,000 emails/month with Brevo) sounds fantastic, but your requirements might drop well below it, and generous tools might reduce your access to other features.
Another thing to check is price and feature change frequency to see if the tools you’re interested in offer reliable capabilities.
Check for deliverability rates
Some email marketing tools publish a deliverability rate you can compare to others. However, your sender reputation and the quality of your emails determine what rate you’ll get.
The bottom line is you shouldn’t give weight to quoted deliverability rates from the tool or a third-party tester, but they can assist in narrowing down your choice.
Think beyond bulk emails
Speaking of features, we haven’t come across an email marketing tool yet that doesn’t allow bulk emailing to all contacts. However, all platforms offer different design, segmentation, targeting, and personalization capabilities.
Consider the features you need now and in the future to nurture relationships, automate messages, grow your list, and integrate with other marketing channels.
For instance, Omnisend’s free plan provides access to all standard email marketing features, so you don’t have to pay more when you outgrow bulk messaging.
Prioritize reporting capabilities
Mass email campaigns generate mountains of data you can analyze, including sales, revenue, clicks, opens, and deliverability statistics. Your mass email software should track these metrics and ideally provide scannable reports.
Here’s an example of Omnisend’s Reports dashboard:
Image via Omnisend
As you can see, Omnisend presents clear metrics and uses bar charts to help you visualize data for sales and marketing activity performance.
The data you collect helps refine your approach, set benchmarks, and improve the effectiveness of your email blasts and drip campaigns over time.
How we tested mass email services
To choose the best software, we reviewed each tool’s bulk emailing capabilities, additional features in free plans, user reviews, support documentation, and screenshots.
Omnisend is an obvious entry as it’s ours. The other tools earned their place based on platform quality and suitability for mass campaigns. We had more candidates but wanted to whittle it down to the seven best options in 2025.
Here’s our criteria:
Sending limits must satisfy bulk emails without instant paid upgrades
Templates should look professional and render correctly across major email clients
Free plans need to include basic automation features like welcome emails
List management tools should allow segmentation based on engagement and behavior
User interfaces need to work for beginners without a technical background
How to comply with bulk email laws
The CAN-SPAM Act sets the rules for commercial emails in the US. It doesn’t stop you from sending bulk emails, but it does prohibit some practices.
Follow these steps to make your bulk emails trustworthy:
Add accurate information to your email headers. Double-check their accuracy periodically.
Use clear subject lines so your subscribers understand what awaits inside. Avoid clickbait tactics or deceptive phrases that promise content your email does not deliver.
Identify commercial messages as advertisements somewhere in your email. The law requires this disclosure without dictating placement or wording.
Every marketing email needs your physical mailing address. Post office boxes and commercial mail-receiving agencies work if registered properly with postal services.
Provide simple opt-out mechanisms lasting at least 30 days after sending. Honor unsubscribe requests within 10 business days and never charge fees or require extra information beyond email addresses.
Monitor third-party senders working on your behalf. You remain legally responsible for compliance even when using outside marketing firms to send messages.
Another law to comply with is the General Data Protection Regulation (GDPR), which has consent rules that require you to collect opt-in or affirmative action (such as checking an unchecked box) to send marketing emails.
Conclusion
Mass email services let you reach hundreds or thousands of people simultaneously without messing around with targeting options. It’s a scattergun approach for spreading news, making announcements, promoting products, and generating website traffic.
Can it give you an ROI? Yes, but it depends on the quality of your email list. We recommend cleaning your list to remove unengaged, unsubscribed, faulty, and outdated emails so you don’t waste sends on contacts that will never open them.
Omnisend provides the list cleaning tools you need and segments your subscribers to create smaller groups more receptive to your bulk emails. You can personalize the messaging for each group to achieve more sales, revenue, and engagement.
Send email blasts that generate sales with Omnisend
A few stand out — Omnisend’s free plan includes all standard email marketing features, letting you send bulk emails, grow your list, segment your audience, and automate workflows. Sender supports 15,000/month, and Brevo supports 300 emails/day with additional credits available.
Is there a free mass email service?
Check out Omnisend, Sender, Brevo, MailerLite, GetResponse, HubSpot, and Mailchimp. These have free plans with generous sending limits. However, they suit different business types, sizes, and marketing requirements.
How do I email 100 people at once?
Sign up for an email marketing tool, import your email list, create a campaign, customize a template, and configure it to send to all contacts (or a segment). Your email blast will then go out to your list.
How much does it cost to send mass emails?
Choosing an email marketing tool with a free plan and a sending limit suitable for your requirements can cost nothing. However, as your list grows, you may need to upgrade to a paid plan to increase your sending limit.
Bernard is the Sr. Director of Communications & Creative at Omnisend, with a passion for good research, helping ecommerce businesses with their marketing automation needs, and beating absolutely everyone in Mario Kart 64.
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