Suppression list management
Effortlessly protect your sender reputation and preserve your sending quota with automatic email exclusions and user-friendly suppression list management.
Simple and effective tools for optimum sending
Automatic suppression handling
Send with confidence knowing that hard bounces, spam complaints, and unsubscribes will be automatically added to your suppressions. Recurring soft bounces are temporarily added to your on-hold list.
Manual entry of known email addresses
Easily add a list of known email addresses or domains you’d like to block. Enter the email addresses manually, import a list from a file, or enter a word pattern to create a filter.
Multi-domain suppression management
Seamlessly add, view, and manage suppressions for your whole account or filter by specific domain.
Simple data export
Protect your deliverability across all platforms by sharing data. Easily export a CSV file of your email suppressions and upload it to your email marketing and CRM platforms’ blocklists.
Why effective suppression list management is important
Improved email deliverability
Removing hard bounces, spam complaints and unsubscribes protects your sender reputation and ensures you reach more inboxes.
Compliance with privacy regulations
Comply with regulations like the GDPR and CAN-SPAM act by honoring opt-out requests and spam complaints and excluding them from future emails.
Optimized email management
Automated suppressions and intuitive tools make managing your email more efficient. Focus on more important tasks while suppressions are taken care of in the background.
Award-winning customer support
Whether you need help getting started, want advice about advanced features or require assistance with troubleshooting your account, our friendly customer service team is available 24/7 and just a click away.
Related features
-
![]()
Detailed activity logs
Get quick and easy access to SMTP and API request data where you can troubleshoot sending issues. Find the error code, endpoint, IP address and more for each event. -
![]()
Inbuilt email verification
Easily maintain healthy sending practices and avoid emailing to invalid addresses by verifying your lists of emails in the app. Then, download the invalid and risky emails and upload.
Pricing
Hobby
Starter
Professional
Enterprise
FAQs
What is the difference between a suppression list and an exclusion list?
In MailerSend, a suppressions list refers to a list of emails that have hard bounced, soft bounced, or resulted in a spam complaint or unsubscribe. These are emails that could negatively impact your sender reputation and email delivery if you continue to send to them.
How do email suppression lists improve deliverability?
By adding bounced emails, unsubscribes and spam complaints to your email suppressions list, you show ISPs (Internet Service Providers) that you actively maintain your recipient list and carry out healthy email sending practices. As a result, sending reputation is maintained or improved which allows your emails to reach more inboxes and avoid spam folders. You can learn more about how suppressions improve deliverability in our article.
What is a suppression list in GDPR?
A suppression list can help you adhere to GDPR guidelines by excluding recipients who have opted out or made a spam complaint from receiving future emails.
How do I set up and manage an email suppression list with MailerSend?
MailerSend automatically sets up and adds hard bounces, unsubscribes, and spam complaints to your suppressions list, while recurring soft bounces are added to the on-hold list for 72 hours. The suppressions list page allows you to easily view and manage these email addresses, as well as manually add email addresses or emails that follow a specific word pattern. Learn more about managing suppressions in MailerSend.
More features to explore
Send emails
Email delivery
Enjoy the flexibility of sending a few emails or scaling quickly to send a few million.
Transactional emails
Intuitively-designed tools allow anyone to contribute, while an advanced infrastructure lets you scale fast.
SMTP relay
Use Simple Mail Transfer Protocol when you want to quickly send emails using a reliable Internet standard.
Email API
Start sending and tracking your emails with our easy API integration process and clean documentation.
Dynamic email templates
Build one-to-one customer relationships on a mass scale using a single email template.
Email verification
Verify a single email address or upload an entire email list to verify in bulk.
Email address validation API
Keep your recipient list clean and maintain great deliverability by automatically verifying incoming email addresses with the email address validation API.
Control your sendings
Webhooks
Get notified as email events happen so your integration can automatically trigger reactions.
Advanced email tracking
Every email is a learning experience. Monitor your email performance to find what works best.
Manage the unsubscribe page
Whether people are unsubscribing, give them a compelling reason to stay.
Activity and performance logs
Easy access to detailed API and SMTP activity data and template error logs.
Track the results
Create emails
Custom HTML email builder
Interested in writing your own HTML code? Our HTML email template editor gives you the flexibility to build exactly what you want.
Drag & drop email template builder
Our drag & drop email editor empowers you to create professionally-designed transactional emails.
Rich-text email editor
Create plain text emails with the formatting capabilities of HTML. Add links, images, bullet points and style text with ease.
Email split testing
Email split testing will improve engagement with your transactional emails by helping you learn what your customers want more.
Send surveys
Understand your customers and users on a deeper level and gain valuable insights to help you improve your product and customer experience with surveys.
Control your account
User management
Invite your team members to collaborate on projects by assigning roles and granting permissions.
File manager
Streamline your workflow by organizing and keeping all your files in one place in the cloud.
Multiple domains
Use multiple domains to manage different brands or products with one MailerSend account.
Dedicated IP
Take control of your sending reputation with your own dedicated IP address and optimize your sendings for improved deliverability.
MailerSend iOS app
Access email activity, domain settings, and analytics on the go with MailerSend iOS app.
Start collaborating on transactional emails now
Try MailerSend for free for up to 100 emails with a trial domain. Add your own domain to get 3,000 emails/month free and start sending.