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Email verification
Keep your domain reputation safe and increase deliverability by filtering out invalid email addresses with the email verification tool. Reduce bounce rates and improve transactional email performance.
Verify email addresses in bulk
Simply upload a CSV list of email addresses and MailerSend’s advanced bulk email verification tool will identify which emails are safe for sending and which ones will soft or hard bounce, so you can send with confidence.
Advanced verification with multiple checks
MailerSend’s email checker validates your email addresses via an advanced verification process that involves detecting typos, syntax, catch-all emails, disposable emails and full inboxes.
Only send to valid email addresses
Minimize expenses and increase deliverability by only sending to real recipients. Download your email validation results and add bad emails to your suppression lists so no future messages will be sent to them.
Increase inbox placement
Clean up your email list and improve deliverability to drive better inbox placement rates. Ensure your customers’ most important emails receive maximum visibility and increase open rates.
Verify emails in real-time
The email verification API endpoint enables you to verify email addresses on the fly, directly from your app. See and report invalid email addresses and easily add them to the rest of your stack.
Experts in email deliverability
Our team is backed by 10+ years of deliverability excellence as a marketing/transactional emailing and email verification service provider. You can rest assured your recipient list is in good hands.
Why email validation is important
Maintain a good sender reputation and increase deliverability by filtering invalid emails and potential spam traps.
Save money by only sending emails to real recipients—don’t waste your emails on invalid email addresses.
Preserve the accuracy of your sending data and analytics for a more realistic overview of your performance.
More features to explore
MailerSend is packed full of features that help you save time and grow your business.
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.
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.
Suppression list management
Protect your sending reputation by adding email addresses and domains that you should not send to.
Track the results
Create emails
Custom HTML template 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.
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.
Ready to send fully optimized transactional emails?
Keep your recipient list clean and optimize your transactional email performance with MailerSend. There are no long-term commitments—see the magic for yourself.