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56% offDealifyexpired-dealemail-verificationbulk-email-validationemail-list-cleaningsmtp-validationlifetime-dealemail-deliverability
MailSentry
MailSentry is the instant bulk email verification solution that monitors emails in real time.
About this deal
MailSentry is the robust email validation and verification tool that verifies the authenticity and validity of email addresses.
It uses powerful algorithms to determine whether an email address is legitimate, correct, and active by evaluating the domain, syntax, and server.
MailSentry is designed to conduct bulk email verification quickly and efficiently, ensuring that every email address on your list is valid and current.
Maintain optimal list cleanliness, interact seamlessly with your systems, and achieve direct inbox delivery to transform how you manage email campaigns.
MailSentry delivers results instantly
Improve list integrity and delivery rates with MailSentry’s extensive email validation tools:
- Regular expression tests to ensure proper email format
- Typographic error detection to identify and repair address errors
- SMTP validation ensures that email servers are actively receiving messages
MailSentry ensures that every email sent is successfully tracked, revealing progress and outcomes in real time, allowing you to see if an email is valid as soon as you click send.
Comprehensive Reports and Insightful Analytics
Examine extensive data using MailSentry to confirm the validity of an email. The status of each verification request is provided by our analytical tools, which also give you insight into how each email address on your list was validated.
API Integration Made Easy
With MailSentry’s sophisticated API connection, you can revolutionize email management and increase flexibility.
Experience rapid performance as queries are handled in milliseconds.
Enjoy versatility with support for multiple APIs, allowing for tailored solutions across different applications.
More Great Feature
- Improve your email strategies with the sophisticated webhook options
- Streamline your outreach with bulk email verification
- Scale up and improve your email validation
- Get real-time insights into your email validation procedure to make sure each stage is in control and clear
Plan & pricing·Lifetime access
Pick the plan that fits your stack
Plan A
$39$88
- Receive 3,500 weekly credits, up to 14,000 monthly (max of 500 emails per submission)
- **Get 1,000 monthly credits for life by keeping the MailSentry badge on your site
- **Receive 100 free credits daily
- **Up to 11 layers of validation
- **Detect email errors in real-time: typos, disposables, MX, duplicates, regex, roles accounts,
- **(cont.) catch all, full, disabled, SMTP
- **Unknown statuses are free
- **Access Swift API for seamless integration
- **Receive comprehensive reports for analysis
- **Easily export data in CSV, TXT, and JSON formats
- **Emails auto-masked after one month for privacy
Most popular
Plan B
$78$746
- Up to 120 usersReceive 9,000 weekly credits, up to 36,000 monthly (max of 1000 emails per submission)
- **Get 1,000 monthly credits for life by keeping the MailSentry badge on your site
- **Receive 100 free credits daily
- **Up to 11 layers of validation
- **Add 1 team member
- **Detect email errors in real-time: typos, disposables, MX, duplicates, regex, roles accounts,
- **(cont.) catch all, full, disabled, SMTP
- **Unknown statuses are free
- **Access Swift API for seamless integration
- **Receive comprehensive reports for analysis Easily export data in CSV, TXT, and JSON formats
- **Emails auto-masked after one month for privacy
- **Integrations access (HubSpot, Mailchimp, and more to come)
Plan C
$117$1119
- Receive 10,000 weekly credits, up to 40,000 monthly (max of 500 emails per submission)
- **Get 1,000 monthly credits for life by keeping the MailSentry badge on your site
- **Receive 100 free credits daily
- **Up to 11 layers of validation
- **Add up to 3 team members
- **1 webhook access
- **Detect email errors in real-time: typos, disposables, MX, duplicates, regex, roles accounts,
- **(cont.) catch all, full, disabled, SMTP
- **Unknown statuses are free
- **Access Swift API for seamless integration
- **Receive comprehensive reports for analysis
- **Easily export data in CSV, TXT, and JSON formats
- **Enhance privacy by masking emails at any time or delete them permanently
- **Integrations access (HubSpot, Mailchimp, and more to come)
- **Premium support
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FAQ
Questions buyers ask before they click
Is this deal still available?+
No. The MailSentry lifetime deal at $39 is no longer available — it was an archived AppSumo offer that has since expired. The deal page now shows 'Sold out.' MailSentry.io itself is still active as a subscription product, and subscription alternatives like ZeroBounce are available if you need email verification today.
What is MailSentry used for?+
MailSentry is an email verification and validation tool built for marketers and businesses. It cleans email lists by removing invalid, temporary, and unsafe addresses using up to 11 layers of validation — including syntax/regex checks, typo detection, MX record lookup, SMTP validation, disposable address detection, and blacklist status checks.
What features did the MailSentry lifetime deal include?+
The AppSumo lifetime deal included bulk email verification, real-time email validation, API integration with webhook support, CSV/TXT/JSON export, detailed analytics reports, and integrations with tools like HubSpot and Mailchimp. Higher-tier codes added team members, SMTP validation layers, and premium support.
Does MailSentry have an API?+
Yes. MailSentry provides a Swift API for programmatic email verification, allowing developers to validate emails in milliseconds and manage multiple API keys. Webhook support is also available for real-time validation event triggers.
What is bulk email verification?+
Bulk email verification lets you upload a large list of email addresses (as CSV or TXT) and validate all of them at once. The tool checks each address against multiple layers — format, domain, MX records, SMTP handshake, disposable address databases — and returns a cleaned list with per-address status codes you can export.
Why should I clean my email list?+
Sending to invalid or inactive email addresses raises your bounce rate, which damages your sender reputation and can get your domain blacklisted by email providers. Regular list cleaning improves deliverability, protects your sending infrastructure, and ensures your campaigns reach real inboxes.
What subscription alternatives exist for email verification?+
The leading subscription alternatives to MailSentry are ZeroBounce, NeverBounce, Bouncer, Hunter.io, and Snov.io. ZeroBounce is widely regarded as the most feature-complete option, offering email validation, inbox placement testing, blacklist monitoring, and email warmup under one subscription.
Alternatives
91% OFF
81% OFF
SendgoMail
SendgoMail is email marketing on your own SMTP and domain: templates, automations, segmentation, and tracking, priced by subscriber count. License Tier 1 $19 for 5,000 subscribers.
$19
$99
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