Check at signup
Catch mistakes while the person entering the address is still there to correct them.
A ZeroBounce alternative for a better-prepared campaign list.
Check recipient addresses, test the message and investigate delivery. MailSlurp connects email verification with the checks around your next send.
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Catch address problems before they become missed messages.
Check email addresses at signup, during a contact import or before an important send. Review syntax, domain and mailbox-related findings, then decide which records to accept, investigate or reject.
Explore email verification
Review imported contacts
Screen a list before sending and keep uncertain records visible for a closer look.
Make the rule fit the message
Use the findings to set your own handling for account recovery, invoices and campaign contacts.
Go from a checked address to a tested journey.
A valid address is one part of a working email flow. Use a controlled MailSlurp inbox to test the signup, reset or receipt and inspect the message your application actually delivered.
Test the complete email flow
Check the sender as well as the list.
Pair recipient checks with inbox placement testing and domain monitoring. See where a test campaign lands and investigate SPF, DKIM, DMARC or blocklist findings when delivery changes.
Test campaign placement
How to add verification to your workflow
Choose the checkpoint
Check an address when it is entered, recheck contacts during an import or verify a list before a high-value send. Use the email validation API for repeat checks.
Review the findings
Separate clear errors from uncertain results. Decide which records need correction or review rather than treating every result as a yes-or-no promise of delivery.
Test the email that follows
Confirm the message flow in a controlled inbox and run a placement test for campaigns. Address quality, message content and sender reputation answer different questions.
Review the list before committing to the campaign.
Separate corrections from uncertain contacts
Start your ZeroBounce comparison with a representative contact import. Use MailSlurp verification findings to identify clear errors and set review rules for uncertain addresses. Keep existing consent and suppression records in your sending platform as you decide which contacts are ready for the campaign.
Check the campaign after checking the contacts
A cleaner list is one part of a reliable send. Run a placement test through your actual ESP and inspect the campaign on the clients your audience uses. Investigate sender-domain or content findings before the next launch, with the address checks and campaign evidence available to your team.
Questions before you switch?
What should I do with uncertain addresses after a list check?
Keep uncertain findings visible for review instead of treating them as confirmed recipients. Apply your contact-quality rules alongside consent and suppression records before sending. Use a controlled inbox to test the message itself, then run a separate placement check through your provider. Each check answers a different question about the next campaign. Check the campaign's inbox placement.
Can I check addresses through an API?
Yes. Add MailSlurp verification to signup, contact import or pre-send workflows through the API. Review the findings and apply acceptance rules that fit the message and its importance.
Is address verification the same as inbox placement testing?
They answer different questions. Verification checks the recipient address. A placement test sends a message through your real provider and records where it lands in controlled test mailboxes.
Give the next send a better starting point.
Check addresses and test the email that follows.
