DeliveryTruth
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Verification guesses. Confirmation knows.

Email verification guesses.
DeliveryTruth confirms.

Traditional email cleaning infers mailbox validity from SMTP signals and heuristics. DeliveryTruth confirms inbox outcomes using Microsoft Exchange delivery results so you clean lists with delivery truth, not probability scores.

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Deterministic confirmation
Based on real delivery outcomes.
Inbox aware results
Accepted, rejected, or rule handled.
Lower cost by design
Confirmation removes guesswork overhead.

How it works

Simple on purpose. The key difference is method: confirmation by delivery outcomes, not verification by inference.

1

We send, not probe

Instead of pinging servers or guessing from signals, we process each address through Microsoft Exchange delivery.

2

Exchange decides

Exchange returns a delivery outcome: accepted, rejected, or blocked by rules or policies.

3

You get the truth

Your list is classified from real delivery decisions so you remove bad addresses with confidence.

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Why we are different

The difference is not features. It is the method.

Most email cleaning tools try to predict whether an inbox exists. DeliveryTruth confirms how the inbox actually responds.

Verification (common approach)

  • Pings mail servers
  • Interprets SMTP signals
  • Applies heuristics and probability scoring
  • Labels addresses as likely valid or risky

Confirmation (DeliveryTruth)

  • Processes each address through Microsoft Exchange
  • Observes the actual delivery outcome
  • Reports accepted, rejected, or rule handled
  • Classifies from real delivery decisions
Verification guesses. DeliveryTruth confirms.

Simple, transparent pricing

Pay as you go or save 20% with a monthly subscription. Credits never expire.

Free: 100 credits/month Start free

Number of email confirmations:

Minimum purchase: 1,000 credits

…or choose a volume tier and pay less:

…or for more than 1,000,000 Contact Us

Credits5,000
Per email$0.0070
Total$35
  • ✓ Credits never expire
  • ✓ No credit card required to start
  • ✓ Cancel subscription anytime
Enterprise
Custom pricing
For high volume or custom requirements
Contact Sales
  • ✔Dedicated account manager
  • ✔Volume discounts beyond published tiers
  • ✔API access and integrations
  • ✔Custom SLAs and priority processing

Confirmation vs Verification

See how deterministic confirmation differs from probabilistic verification.

Email VerificationDeliveryTruth Confirmation
MethodSMTP probing and heuristicsMicrosoft Exchange delivery
Result typeProbability scores, risk labelsDeterministic: accepted, rejected, rule handled
Data sourceInferred from server responsesObserved from actual delivery
Catch-all handlingOften marked "risky" or "unknown"Delivery outcome confirms actual response
Best forQuick bulk screeningHigh-value lists requiring certainty

Frequently asked questions

Get answers about how DeliveryTruth works and what makes it different.

What does "deterministic" mean? ⌄

Deterministic means each result comes from an actual delivery decision by Microsoft Exchange, not from probability scores or inference. You get accepted, rejected, or rule handled based on real delivery outcomes.

How long does confirmation take? ⌄

Processing time depends on list size and Exchange response times. Typical jobs complete within hours. Large lists may take longer. You can track progress in the console.

Do credits expire? ⌄

No. Purchased credits never expire. Use them whenever you need to confirm a list.

What is the subscription discount? ⌄

Monthly subscription customers receive 20% off the pay-as-you-go prices. You can cancel anytime.

Does this guarantee future deliverability? ⌄

No. DeliveryTruth confirms delivery outcomes at the time of processing. Future inbox placement depends on sender reputation, authentication, content, and sending behavior.

Is this email verification? ⌄

No. Email verification infers results from SMTP signals and heuristics. DeliveryTruth is deterministic confirmation based on Exchange delivery outcomes.

What file formats do you support? ⌄

CSV, Excel (.xlsx, .xls), and plain text files. We automatically detect the email column.

What is included in the free tier? ⌄

100 confirmations per month, reset monthly. Intended for testing and evaluation. For production volumes, purchase credits or subscribe.

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