Know which recipients are safe to send to.
Verify email addresses before they reach your sending infrastructure. Sendzovo checks syntax, domains, MX records, SMTP responses, disposable addresses, role accounts and catch-all behavior to help reduce preventable bounces.
Low-risk recipient
Syntax valid · MX found · SMTP accepted
Not disposable · Not catch-all · Not role-based
Verify addresses before they affect your sending reputation.
Invalid and risky recipients can lead to bounced messages and unnecessary delivery problems. Verify addresses before sending so your application can make an informed decision about each recipient.
Single email verification
Verify an individual address from signup forms, checkout flows, account creation, contact forms or your application backend.
Bulk email verification
Upload an email list, process addresses asynchronously and identify deliverable, risky, invalid and unknown recipients at scale.
Developer-first API
Integrate verification directly into your application and make verification decisions before accepting or sending an address.
More than checking whether an email looks valid.
Sendzovo combines multiple signals to give your application a more useful picture of an email address before you send.
Syntax validation
Detect malformed email addresses and common formatting problems before processing the recipient.
Domain validation
Check whether the domain exists and can be resolved before moving further through verification.
MX records
Check whether the recipient domain publishes mail exchange records capable of receiving email.
SMTP verification
Use SMTP-level signals to determine whether the destination appears able to accept mail.
Disposable addresses
Identify known disposable or temporary email domains so you can decide whether to accept them.
Catch-all detection
Detect domains that accept mail for arbitrary addresses and therefore require additional caution.
Role-based addresses
Identify addresses such as info@, support@ and admin@ that may behave differently from individual recipients.
Risk signals
Combine available verification signals into a result your application can use to decide whether an address should be accepted or reviewed.
Recipient intelligence
Where available, combine verification signals with Sendzovo delivery history, bounces and complaints for a broader view of recipient health.
Get a result your application can act on.
Verification should not leave you interpreting a collection of technical checks. Sendzovo turns those signals into useful recipient classifications.
Deliverable
The available signals indicate that the address is suitable for delivery.
Risky
The address or domain has characteristics that may require additional caution before sending.
Undeliverable
Verification indicates that the address should not be treated as a valid recipient.
Unknown
Verification could not confidently determine the recipient status. Your application can choose how to handle these addresses.
Structured API response
Receive machine-readable verification results that can be used directly inside your application logic.
Fresh verification
When enabled for sending workflows, recipients can be checked again before a message is accepted for delivery.
Add verification to your application in a few steps.
Use the verification API anywhere your application collects, imports or sends email addresses.
Submit an address
Send an email address to the verification endpoint from your backend or application workflow.
Run verification
Sendzovo evaluates the address using the available syntax, DNS, MX, SMTP and risk signals.
Make a decision
Accept, reject or review the recipient based on the verification result returned by the API.
Clean your lists before you send.
Have an existing customer, subscriber or prospect list? Upload it for bulk verification and separate addresses into useful deliverability categories before sending your next campaign or import.
Verification can be part of your sending workflow.
For applications that need additional protection, verification can be used as a pre-send decision point instead of relying only on historical delivery data.
Application submits a message
Your application sends a transactional message through Sendzovo.
Recipient is evaluated
When Verify Before Send is enabled, Sendzovo performs the configured recipient verification checks.
Sending decision is made
The recipient can be allowed through or flagged according to your configured verification policy.
One platform from recipient validation to delivery.
Verification becomes more useful when it is connected to the system that actually sends your email. Sendzovo brings recipient verification, transactional sending, delivery events, bounces and complaints together.
Verify
Check recipients before they enter your sending workflow.
Send
Deliver transactional email through the same platform using API or SMTP.
Protect
Use delivery outcomes, bounces and complaints to understand recipient health over time.
Build cleaner sending workflows.
Verify individual recipients, process lists in bulk or integrate verification directly into your application with the Sendzovo API.