Nonprofits lead verification
Nonprofits manage donor relationships that span years or decades, making contact database quality a direct line item in fundraising ROI — an invalid email on a major donor record translates to missed cultivation touches and potentially lost gift revenue. The challenge is that nonprofit databases are built through many channels simultaneously: event attendance, online giving platforms, volunteer sign-ups, peer-to-peer fundraising, and board member referrals. Each channel captures contact data under different standards, and a database that has never been systematically verified will contain overlapping records, outdated addresses, and a meaningful proportion of non-deliverable contacts.
What's hiding in your list
Major donor records maintained in Raiser Edge, Bloomerang, or similar CRMs are often updated through manual data entry by development staff, creating inconsistency in email format standardization and increasing the probability of entry errors that are not caught until a communication fails.
Event-sourced contacts — volunteers, gala attendees, auction participants — enter the database with the contact details they provided on a one-time basis, which may be a secondary personal email or a work address they rarely check for personal correspondence.
Lapsed donor contact records that have not received a communication in two or more years are subject to the full range of email decay: abandoned addresses, domain changes for employer-tied emails, and phone numbers relinquished during major life transitions.
Email and phone — cleaned in one pass
Email verification
Syntax, domain, MX and live-mailbox checks catch hard bounces before they ever touch your sender score.
Phone validation
Confirm every nonprofits contact's number is live, with line type and carrier — the feature email-only tools don't have.
Flat pricing
Protect deliverability so appeals get seen. One flat monthly price your nonprofits team can actually budget for.
Clean leads in three steps
No setup, no integrations, no learning curve. Upload a file, download a better one.
Upload your CSV
Drag in any contact list. We auto-detect email, phone, name and company columns.
We verify everything
Every email checked for deliverability, every phone validated, duplicates flagged — with a live quality score.
Download clean leads
Export a verified, deduplicated list your team can actually call and email.
Email and phone, cleaned in a single upload — see exactly how many bad contacts are hiding in your list before you pay a cent.
100 free verifications · no credit card · results in under 2 minutes
Frequently asked
How does verifying our donor email list help our year-end fundraising campaign?
Year-end giving campaigns are the most revenue-critical email sends most nonprofits make each year. A list that generates hard bounces on 8-10% of sends not only fails to reach those donors — it also progressively damages your sending domain reputation, reducing deliverability even to valid donor addresses. Verifying before the year-end send ensures your most important campaign reaches the highest possible proportion of your donor base.
We have corporate donors and foundations alongside individual donors. Can BounceBlock validate both types?
Yes. Individual donor email addresses and phones are validated at the contact level. For corporate donors and foundation program officers, the company enrichment layer confirms the business domain is active and the organization type matches your records. A single upload handles both individual and institutional contacts simultaneously, with each record receiving a 0-to-100 quality score regardless of contact type.
Our budget is limited. How do we justify the cost of contact verification to leadership?
The most direct framing is the cost of a bounce versus the cost of a verification. A major gift solicitation that never delivers because of an invalid email address represents a loss that is multiples of any verification cost. BounceBlock flat monthly pricing means the entire database can be verified regularly rather than just before the largest campaigns, and the free 100-row preview at /signup requires no financial commitment to evaluate the tool.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.