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iWave Appends

Cleaner data and smarter outreach with data appends

Stop wasting time on outdated information. Introducing Appends—our new data enhancement feature that cleans, completes, and enriches your donor records.

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How data enrichment with appending works

  • Fundraiser using data enrichment

    Donors are constantly on the move—new homes, new jobs, new emails. Within 12–18 months, up to 30% of your database is outdated. Many nonprofits patch this with costly one-off file cleanups or multiple vendors, which impacts data quality.

    Appends works with iWave’s trusted data sources to fill in the gaps in your existing records, giving you a complete view of your donors in a single step. For example: you know a donor’s name and mailing address. Appends fills in their phone and email, and verifies addresses through USPS NCOA and standardization.

  • Fundraiser frustrated by traditional data appending processes

    Steps to data appending the traditional way

    Here’s how data appending information typically works:

    • Donor data is downloaded from your your donor management system or CRM, and uploaded to a third-party appending service
    • A third-party service appends your donor data at an added fee
    • Missing or additional information is added to your records
    • You review and validate the appended results to ensure accuracy
    • Appended data is re-uploaded to your donor management system or CRM
  • iwave appends product shot 2

    Steps to data appending with iWave

    In iWave, our data append service is baked right into the screening process:

    • Upload a screening file
    • Select which append options you want
    • iWave’s appending service matches your donor data to our in-depth database of addresses, emails, and phone numbers
    • Missing or additional information is automatically added to your records

Benefits of iWave’s data append service

  • Seamless integration within your prospect research solution

    Seamless integration within your prospect research solution

    Appends is built directly into iWave, eliminating the need for extra tools or manual processes. Access clean, complete donor profiles without leaving your prospect research workflow.

  • iwave appends product shot

    Trusted, verified sources to enrich your donor data

    Powered by USPS-verified NCOA data and address standardization. Every address and contact is accurate, current, and deliverable, giving you confidence in every outreach.

  • Automated data enrichment for your donor records

    Automated data enrichment for your donor records

    Whether you're managing a small team or a large database, Appends automates donor data enrichment, saving hours of manual work. Focus on what matters—building relationships and driving results.

Data append services offered with iWave

  • Change of Address (NCOA) data appends

    Address Standardization

    Improve your mailer deliverability and campaign accuracy. Appends automatically cleans and standardizes address information before you screen, ensuring your donor records are ready for outreach.

  • Address Standardization data appends

    Change of Address (NCOA)

    Avoid sending mail to the wrong place. This feature automatically updates records with USPS-verified moves from the last 48 months, keeping your database current.

  • Phone Number Appends

    Phone Number Appends

    Expand your contact pool with verified mobile and landline phone numbers. Improve connect rates and secure more successful donor conversations.

  • Email Appends

    Email Appends

    Don’t let a missing email hold you back. Appends adds email addresses with high accuracy, boosting the success of your digital campaigns and communications.

  • Happy fundraisers looking at dashboard

    How to get started with Appends

    Appends is trusted by fundraising professionals to save time, improve data quality, and boost campaign results. And the process is seamless and embedded right in iWave!

    It’s simple. No exporting, no juggling multiple vendors. Just one streamlined process to keep your data accurate and campaign-ready.

    Here's how it works:

    • Upload your screening file
    • Select which append options you want
    • Run screening + enrichment in one pass
    • Receive updated data in your screening results + append report

Ready to add the power of data append to your iWave toolkit?

With iWave Appends, your team can keep donor data clean, accurate, and campaign-ready— without extra tools or manual work. Join thousands of nonprofits that trust iWave to power stronger connections and better fundraising results.

Book an iWave demo to learn more