Verify Prospeo Emails Before You Send a Cold Campaign
Run a Prospeo export through a live mailbox check on the day you send it, and keep rows on catch-all domains for a smaller second wave. Prospeo sells one verified business email per credit, but its pricing page doesn't say how the check works or what happens on catch-all domains, and the label is from the day you revealed the lead. Export the list, tag catch-all domains, verify every row, send valid rows first and suppress anything invalid.
What Prospeo says
From Prospeo's pricing page, read 8 November 2026:
- "One credit gives you one verified business email, while a direct mobile number costs 10 credits."
- "The Free plan provides 100 credits a month plus core filters and has no time limit."
- Unused credits roll over to the next billing cycle.
- "If you have no more credits, you won't be able to export or reveal new enriched contacts (emails/mobiles) until your credits reset at the start of your next billing cycle."
There's nothing on the page about catch-all handling or how long a verification is considered fresh. That's normal for finder pricing pages, and it's why the send-day check matters.
Why Prospeo leads can still bounce
- Catch-all domains. The server accepts any address during a check, so a finder can't confirm the mailbox exists. Some of these bounce after you send (what to do with catch-all emails).
- Saved leads. Contacts revealed weeks ago and exported later. People change jobs every month (email valid but person left the company).
- Mixed sources. A Prospeo export merged with Apollo, Sales Navigator or a scraped list. One file, several ages of data.
The pre-send routine
1. Export and tag
Export to CSV with email, name, company, domain and LinkedIn URL. Tag catch-all domains with the bulk catch-all checker.
2. Clean the file
- Remove repeats with remove duplicate emails.
- Clean LinkedIn URLs and dedupe people with the LinkedIn URL cleaner.
- Cap people per company with limit contacts per company.
3. Verify
Upload to the verify page. Each address gets a live SMTP check:
| Result | Action |
|---|---|
| Valid | Main sequence |
| Risky (catch-all) | Second wave, best grades first |
| Risky (role, disposable, full) | Drop for outreach |
| Invalid | Suppress |
| Unknown | Re-check tomorrow |
SimpleVerifier reports catch-alls as risky with a grade and the reason, never as valid (catch-all scoring).
4. Send in waves
Valid rows first. Catch-alls a day later, a few hundred at most; stop that wave if hard bounces pass 2%. Most sequencers have their own pause line; see bounce rate thresholds by platform.
5. Test a new source before you trust it
If Prospeo is a new source for you, send a sample first and measure its bounce rate before loading the whole list. Our guide to testing a new lead source explains how, and bounce rate by source compares sources side by side.
What checking costs
- Starter, $9 a month: 2,500 checks.
- Pro, $39 a month: Unlimited email verification.*
- Business, $99 a month: the first 300,000 checks a month at full speed, 5 seats.
- Agency, $249 a month: the first 750,000 checks a month at full speed, 15 seats, client workspaces.
*Pro fair use: the first 100,000 checks a month at full speed, then slower, never cut off. See pricing. Check your list free: 100 checks with a Google sign-in, no card.
More reading: best email finder tools, verify an Apollo export, verify a LeadIQ export, and verify your list before cold email.
Common questions
Does Prospeo verify emails?
Its pricing FAQ says each credit buys 'one verified business email'. The page doesn't explain the check or how catch-all domains are handled, so re-check before a cold send.
How many free credits does Prospeo give?
On 8 November 2026 its pricing FAQ said the Free plan provides 100 credits a month and has no time limit.
What happens when I run out of Prospeo credits?
Its FAQ says you can't export or reveal new enriched contacts until credits reset at your next billing cycle, unless you upgrade or buy a credits add-on.
Can I verify a Prospeo export for free?
SimpleVerifier's first 100 checks are free with a Google sign-in, no card, which covers a test batch from a Prospeo export.
Check your list before you send
Real mailbox checks over SMTP, and nothing is sent to the address. Sign in with Google and your first 100 email checks are free, no card. Plans for bigger lists are on the pricing page.