No. 32 of 36 ·Email Verification Services

Impressionwise

Name: Impressionwise
Price: 87 USD

Web · API

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Freedom report

No signalScore 4.8

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedThinly documented

Impressionwise is ranked #32 of 36 in email verification services on Freedom251. It runs on API, Web. There is no free plan. A free trial is offered.

Impressionwise plans and pricing

All plans

Verification with Threat Removal $87 once $87.00 USD for 15,000 credits 15,000 credit minimum · 1 credit per email · credits never expire impressionwise.com · 9 Oct 2026

Enterprise Not published Contact us for volume-based pricing Over 50,000,000 emails impressionwise.com · 9 Oct 2026

Compared on email verification services

Free plan: No
Bulk list upload: Yes
API access: Yes
Real-time form checks: Yes
Disposable detection: Yes
Credit rollover: Yes

Best Impressionwise alternatives

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One bar VerifyAnyEmail Free tier No. 1$8.99/mo6.5 One bar Bounceless Free tier No. 2$19/mo6.4 One bar Email Verifier API Free tier No. 3Free6.4 One bar Emailable Free tier No. 4$32.30/mo6.4 No signal EmailOversight Paid plans No. 5$70/mo6.4 One bar emailverifier.dev Free tier No. 6Free6.4

The record

Product: Impressionwise provides deliverability intelligence and threat detection to help users decide which email addresses are safe to send to.
Signal analysis: The service says it analyzes more than 240 independent signals in email data.
Threat detection: Its threat checks include spam traps, honeypots, dormant accounts, disposable addresses, bots, and risky domains.
Verification: The maker says standard verification uses DNS and SMTP without sending messages to external mail exchangers; catch-all validation is an exception when specifically selected.
Bulk processing: The FAQ says users can upload files of up to 8 million emails, and a one-million-address batch typically takes about 3 to 4 hours.
Free evaluation: The complimentary evaluation processes a file of up to 100,000 emails and provides a summary report; results files are not included.
Integrations: The service offers a real-time API, FTP file transfer, and workflow integrations, with connectors for CRMs, ESPs, forms, spreadsheets, and ad platforms.
API capacity: The integrations page says a single API request can verify a single address or automated batches of up to 1 million email addresses.
Privacy: The FAQ says customer email data is used only for validation, is not shared with third parties, and is removed within 30 days or earlier on request.
Compliance: The maker describes the service as fully GDPR compliant.
Data retention: Documentation says uploaded files and results are automatically deleted from the account and FTP after 7 to 10 days.
Support: The contact page lists phone, email, and a contact form, with phone support Monday through Friday, 9am to 6pm EST.
Notable limits: The pricing FAQ says the service does not support verifying Yahoo and AOL addresses.
Intended users: The maker says the service is for businesses of all sizes, including individual operators, small and medium businesses, and large organizations.

Where it ranks on Freedom251

Best Email Verification Services in 2026#32 of 36

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Sources

impressionwise.com· checked 9 Oct 2026
impressionwise.com/pricing.html· checked 9 Oct 2026
impressionwise.com/documentation.html· checked 9 Oct 2026
impressionwise.com/integrations.html· checked 9 Oct 2026
impressionwise.com/contacts.html· checked 9 Oct 2026