Clean the list before you send to it. Credits that never expire.

A bounce spends the reputation your warming built. Validate the list first, with real catch-all verification instead of a guess.

Get StartedBook a DemoFrom $32 for 10,000 credits.
Validation · q4-prospects.csv12,232 addresses
Checking every unique address
Deliverable102Undeliverable0Risky0Invalid0
4.9
Rated on G2

Every bounce is paid for. Three things it costs.

  1. The reputation the warming built.

    Google and Microsoft count every bounce against the domain.

  2. The seat, the list and the rep.

    They cost the same for an address that bounces as for one that reads.

  3. The next send.

    The people who exist are judged alongside the bounces.

A catch-all guess is not an answer. Other verifiers mark the whole domain risky. MailStrike checks each address.

Deliverable or Undeliverable where it can confirm the address. Risky only where it cannot.

Catch-all domain · rivermark.io5 addresses
anna.kuipers@rivermark.io
not checked
Risky
j.santos@rivermark.io
not checked
Risky
sales@rivermark.io
not checked
Risky
elena.novak@rivermark.io
not checked
Risky
d.osei@rivermark.io
not checked
Risky
0 of 5 confirmedEvery address handed back as Risky.

What you get back. Four results.

Deliverable
Safe to send.

The mailbox exists and accepts mail.

Undeliverable
Remove it.

It will bounce.

Risky
Your call.

On a catch-all domain, not confirmed.

Invalid
Drop it.

Not an email address. Never charged.

From $32 for 10,000 credits. Buy once. They never expire.

A monthly plan bills whether you send or not. A pack waits until you do.

Three ways in. Pick the one that fits the moment.

BULK
The list before a campaign.

Drop a CSV or Excel file. Every unique address is checked, and the report comes back with your other columns untouched, ready for the sequencer.

SINGLE
The one address that matters now.

A reply you are about to answer, a lead a rep just found. One credit, the result in the app, and a history of past checks.

MCP
The assistant you already work in.

Connect the MailStrike MCP server once. Ask the assistant to check an address or a list, and the result comes back in the conversation.

Questions about validation.

Credits, catch-all domains, the file.

Can't find it here? Ask the team.

One check of one unique address. Duplicates and rows that are not an email address are never charged.

No. A pack is yours until you have used it. There is no monthly plan behind it.

Packs start from $32 for 10,000 credits. Larger packs are on the Buy credits screen in the app.

No. Validation is sold in credit packs only. Book a demo and we will run a list with you on the call.

A catch-all domain accepts mail for any address, so most tools mark every address on it as risky. MailStrike checks the address itself and returns Deliverable or Undeliverable where it can confirm it. Only what it cannot confirm comes back as Risky.

A CSV or Excel file up to 10 MB and 50,000 rows, with an email column and no more than 10 columns. The file and the report are deleted after 7 days.

Validate the list. Then send to people who exist.