If you are preparing outreach, you need to know whether the task requires finding a suitable site, locating a contact route or verifying an address. Hunter finds email addresses at a domain and checks whether they accept mail. OppAlerts finds opportunities across the web and returns the contact details a site publishes about itself. They provide contact details through different methods.
OppAlerts publishes this comparison. Hunter verifies addresses and OppAlerts does not, which is the reason most people buy Hunter.
Hunter verifies an address; OppAlerts reports a published one
Hunter verifies deliverability. It tests an address and reports whether mail sent to it is likely to arrive, and its pricing page states that verifying an email costs half a credit.
OppAlerts does not verify anything. Site Info searches records for around 40 million sites and returns the contact information published on a website, as stored when that site was collected: contact pages, email addresses, phone numbers and social profiles. Nothing is tested, no fixed refresh interval is promised, and no address is confirmed as current or deliverable.
That distinction decides which product answers your question. If you have a list of domains and need addresses that will not bounce, Hunter does that work and OppAlerts does not. If you have found a page worth pursuing and want the contact route the publisher provides, Site Info supplies it without a second subscription.
The two also look for different things. Hunter looks for a person at a company. Site Info looks for how a website invites contact, which is often a submissions page or an editorial address rather than a named individual.
How each is metered
Hunter sells credits by the month: 50 on the free plan, then 2,000, 10,000 and 25,000, with a custom tier above. Yearly plans are shown at 24,000, 120,000 and 300,000 credits. Verification consumes half a credit, so the same plan buys twice as many verifications as lookups.
OppAlerts does not meter contact lookups separately. Its weekly allowance counts tracking calls, where one call is one tracked prompt or keyword, on one provider, on one day.
Both products charge nothing for people. Hunter states unlimited users on all plans, and OppAlerts is not sold by the seat, so team size does not change either bill.
Where OppAlerts covers work Hunter does not
Hunter finds and verifies addresses. It does not find the opportunity in the first place, and nothing on its pricing page describes link data, prospect discovery by opportunity type, coverage monitoring, rank tracking or content scoring.
That earlier step is what OppAlerts is built around.
- Prospect Index, searched by meaning as well as keyword and filtered by opportunity type: guest contribution pages, resource lists, expert roundups, podcasts, industry directories, award programs and speaking submissions. Searching by meaning returns relevant pages that do not use your wording.
- Backlinks DB: Link Gap, listing sites with observed links to the competitors you name and no observed link to you.
- Brand Unlinked Mentions, listing pages that already name your business without an observed link to it.
- PageRank history, monthly link-graph measurements for a host, its www variant and its domain. You can judge whether a site is worth contacting before you spend a verification credit on it.
- News Index over indexed news, blog and podcast content, for brand and competitor coverage.
- Tracking of ChatGPT, Gemini and Google AI Mode answers and Google and Bing keyword positions, and Content Optimizer for comparing a draft with categories you select.
These reports share one campaign definition, so a prospect found in a link gap report is already described in the terms of your market rather than needing its own setup.
A sensible way to use both
Check the site's published contact details before paying for an address lookup.
Find the opportunity in the Prospect Index or in a link gap report. Check the site's history in PageRank history and decide whether it justifies the effort. Read what Site Info holds, because many publishers state exactly how they want contributions submitted and no address lookup is needed. Where you do need a named person at that domain, look them up in Hunter and verify the address before sending.
Used that way, verification credits are spent only on prospects that already passed a relevance and quality check, which is usually the cheaper order of operations.
Choosing between them
Choose Hunter when you have the target list and need addresses that will reach a person, or when bounce rates are the problem you are solving.
Choose OppAlerts when you need the target list itself, with the evidence to qualify it and the published contact route for each site, alongside tracking, monitoring and content work in one campaign.
These do not compete. Neither one does the other's job, and the overlap is only that both display an email address at the end.
After qualifying the opportunity, check the contact step your request requires. Use the appropriate service for that step before preparing the approach.
See whether contact details are always available, what Site Info returns, or Hunter alternatives.