Verify your Outreach prospects before a sequence
Outreach has no SimpleVerifier connector. For prospects already in Outreach, export, verify, and bulk-update. Outreach holds one prospect per unique email address, so the email column does the matching.
The workflow
- In Outreach click the Prospects icon in the left navigation, select the prospects, click More Options (three dots) > Export. Choose Email CSV for anything over 200 records (it goes to your user's email, up to 100,000 records) or Download now for smaller sets, then Export. Links expire after seven days.
- Upload the CSV on the verify page, signed in; the first 100 checks are free. The email column is found by its header or contents and every other column is kept.
- When the job finishes, download the valid, risky and invalid files. Each keeps all of your original columns.
- Pick a field for the result (a custom prospect field such as Email Status, or a tag) and make sure it exists in Outreach.
- From the Actions dropdown choose the bulk create option and upload the CSV (UTF-8, which Excel needs 'CSV UTF-8' for). Map the email column, map the result column, and choose how to treat existing prospects: skip, overwrite, or fill only blank fields.
- Pick the option that fills only blank fields, or overwrite only the Email Status field, so owner and stage are untouched. Then add a rule to your sequences to exclude prospects whose Email Status is invalid.
Menu names follow Outreach’s own help articles, checked 12 Nov 2026: export prospects, bulk create via CSV. Vendors rename menus, so trust what you see on screen if it differs. SimpleVerifier is not a Outreach partner and has no Outreach connector.
Columns to map
- Email, which Outreach uses to identify duplicate prospects.
- Map Account or Account name, not Company, if you attach prospects to accounts. Accounts must already exist.
- Result column to a custom field. Your Governance Profile must allow bulk CSV creation, or ask your admin.
What to do with risky and catch-all results
Risky prospects are frequently senior people at companies that accept all mail. Keep them in sequences, but start them on a lower daily send with a separate mailbox so a bounce does not hit the mailbox you use for your best accounts. Remove invalid prospects from every active sequence.
What people use it for
- Clean a prospect list before loading it into a high-volume outbound sequence.
- Check records that came from a data vendor or an old event list.
- Protect the mailboxes a team shares by removing addresses that will bounce.
Using the result
Each address comes back valid (the mail server confirmed the mailbox), risky (delivery could not be confirmed: a catch-all domain, a role address such as info@, or a provider that hides mailbox status) or invalid (it will bounce, or it is a throwaway address).
Full endpoint reference, error codes and an OpenAPI file are in the API docs. For lists of thousands of addresses, upload a CSV on the verify page instead.
Run your 100 free checks on one list before you switch anything
Export one list’s addresses as a CSV and upload it: the first 100 are checked free in the dashboard, no card needed. Compare the results with what you use now, then decide. Nothing in Outreach changes until you import a file back.
Common questions
- Which plans include API access for Outreach?
- API access comes with Pro, Business and Agency, listed on the pricing page; Starter covers CSV verification only. A key on a plan without API access gets a 402 that says so. Each key can make 120 calls a minute.
- Can I just verify new prospects as they are created in Outreach?
- Not natively. There is no connector. Pipelines that create prospects through the Outreach API could call the SimpleVerifier API first, but you would build and run that yourself.
- What is the file limit?
- Outreach's own help lists Download now at 200 prospects per file and Email CSV at up to 100,000 records for exports. The bulk create limits are not stated there, so check the uploader and split the file if it refuses.