Coming soon: Blocklist monitoring service
Get real-time alerts about your domain or IP’s blocklist activity, enabling you to catch issues early and protect your or your clients' sender reputation.
Automated blocklist monitoring in 2 clicks
Add your domains and IPs, and MailerSend will automatically perform regular blocklist checks so you don’t have to, notifying you in real time about any activity.
Checks against the most impactful blocklists
Save time by focusing on the listings most likely to harm your domain reputation, with a strategically curated checklist of the most influential active email blocklists.
Prioritization made easy
No guesswork needed: our impact scoring system helps you prioritize listings by risk, so you can start by directing your efforts where they matter most.
Flexible ways to monitor
Get maximum coverage while you monitor by adding domain names, IPv4 and IPv6 addresses, and CIDR notations for IP ranges.
Your early-warning system
Daily blocklist checks
Checks are ran every day and up to every 2 hours for high-volume senders.
Real-time alerts
Enable notifications to an email or endpoint URL for when a blocklisting is detected.
One-click delisting
Get actionable tips and insights on how to resolve issues and request removal with a single click from the report.
Email deliverability, handled
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Learn moreDMARC reporting made useful
Monitor all of your domain’s sending activity and easily identify authentication issues and unauthorized sending sources. -
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Learn moreReal-time email activity tracking
See the status of every single message you send, from the second it’s processed to the moment it’s opened. -
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Learn moreBuilt-in email verification
Upload your recipient email list to identify invalid email addresses, suppress them in a single click, and safeguard your deliverability.
Fast, responsive customer support
We won’t leave you in the dark! Our award-winning customer support team is on hand to assist you with everything from getting started to using advanced features and troubleshooting.
Smarter transactional messaging for modern businesses
Email API & SMTP
Fast, reliable email delivery you can integrate in minutes. With official SDKs, in-depth documentation, and inbox performance you can trust.
Transactional SMS API
Simple, high-volume, toll-free text messaging that you can effortlessly add to your workflows for a multi-channel approach that reaches more customers. (U.S & CA)
Analytics
Get a clear vew of overall performance or explore the metrics that shape your strategy. Generate custom reports for clients and stakeholders in seconds.
Inbound routing
Build 2-way messaging flows by capturing inbound messages and parsing their content directly to your support platforms, CRMs, products and other tools.
Explore all features
Dynamic email templates
Build one-to-one customer relationships on a mass scale using a single email template.
Multiple domains
Use multiple domains to manage different brands or products with one MailerSend account.
Webhooks
Get notified as email events happen so your integration can automatically trigger reactions.
Drag & drop builder
Our drag & drop email editor empowers you to create professionally-designed transactional emails.
User management
Invite your team members to collaborate on projects by assigning roles and granting permissions.
API logs
Easy access to detailed API and SMTP activity data and template error logs.
And much more to deliver, every single time
FAQs
What is MailerSend?
MailerSend is a transactional messaging service built for developers, teams and agencies to easily integrate email and SMS delivery into the apps, software and websites of their businesses and clients.
How does MailerSend pricing work?
MailerSend’s pricing is primarily based on email volume with different plan tiers that offer additional features and limits, as well as very high volumes of email traffic. If your plan exceeds the monthly included email quota, you can upgrade to a higher-volume for better cost per email pricing, or keep sending with a pay-as-you-go overusage fee per 1,000 emails.
How do I get my domain or IP delisted?
The delisting procedure varies by blocklist. In some cases, the blocklist requires actions to be taken and a delisting request to be submitted. In others, your blocklisted IP or domain may be delisted automatically when any issues are addressed, without needing to submit anything. MailerSend gives tips and advice, with direct links to delisting requirements and submissions for any blocklists your domain or IP appears on.
What are blocklists?
Email blocklists (sometimes known as DNS blocklists / DNSBL or Real-time blocklists / RBL) are databases of email servers, domains or IP addresses that are suspected of sending spam or malicious emails. They are used by mail servers, spam filters and internet service providers to filter out unwanted and potentially unsafe mail. While they are effective at protecting email users against abuse, it is possible for legitimate senders to be blocklisted, which impacts email deliverability and sender reputation.
Why does MailerSend monitor fewer blocklists than some competitors?
There are hundreds of email blocklists available but only a fraction of these are reputable (like Spamhaus, SpamCop or Barracuda) and have an impact on deliverability. At MailerSend, we’ve strategically curated the most significant blocklists so that any listings that have the potential to harm your email reputation and deliverability can be quickly addressed, without the distraction of less important blocklists that won’t have any effect.