Data Append Services to Complete the Customer Records You Already Own
Data Append Delivered in Real Time
- 98%+ Deliverability
- No Minimums
- No Contracts
22M+
Business Records
200M+
Consumer Records
18+
Years in Business
Inc.
5000 Honoree
A+
BBB Rating
NCOA
Processed & DNC-Scrubbed
24/7
Support
Complete Your Customer Records With Data Append
Your customer database is one of your company’s most valuable assets, but only if the information is complete, accurate, and up to date. Missing email addresses, outdated phone numbers, incomplete business details, and inaccurate mailing addresses make it harder to reach customers, personalize campaigns, and generate revenue.
Jared’s Leads provides professional data append services that enhance the records you already own with valuable contact and business information. Instead of purchasing a new prospect list, data appending enriches your existing database to improve CRM performance, strengthen marketing campaigns, and maximize the value of your customer data.
Ready to see what’s possible? Send us a sample of your file for a free Match Test. We’ll show you how many records we can match, which fields we can append, and what the project would cost, with no charge and no obligation.
- 3x Inc. 5000 honoree
- A+ BBB rated
- Founder-Led Since 2008
- Specialist Reviewed
— Jared Knapp, Founder of Jared’s Leads
What Is Data Append?
Data append services, also known as data appends, add missing information to records you already own, so you don’t need to purchase a new list of prospects. Instead, you provide your existing database, and we match your records against trusted data sources to append additional details such as email addresses, phone numbers, mailing addresses, company information, demographic data, or firmographic attributes.
Data append is often confused with data hygiene and data enrichment, but these services serve different purposes and are frequently used together to improve database quality.
Service | What It Does |
Data Append | Adds missing information to existing records. |
Data Hygiene | Cleans, standardizes, and removes inaccurate or duplicate data. |
Data Enrichment | Expands customer profiles with additional demographic, firmographic, or technographic insights. |
Data Services Comparison
Three essential services. Stronger, smarter data.
DATA APPEND
- Adds missing information to your records
- Fills gaps like email, phone, and address
- Improves data completeness and usability
DATA HYGIENE
- Cleans and validates data to ensure accuracy
- Standardizes formats and values
- Removes duplicates and outdated records
DATA ENRICHMENT
- Expands profiles with valuable company and contact insights
- Adds demographics, firmographics, and technographics
- Enables better targeting, personalization, and decision-making
Data append adds missing fields; data hygiene cleans what you have; data enrichment expands the profile.
Why Businesses Use Data Append
Even the best CRM loses value if your records are incomplete, outdated, or missing key contact information. Data append services enrich the records you already own with valuable contact and business information, helping you improve outreach, personalize marketing campaigns, and make better business decisions.
Many businesses already know who they want to contact but don’t have all the information needed to reach them effectively. Most data appends fall into one of two categories:
Forward Email Append
You provide business names and mailing addresses, and we append the missing email addresses, phone numbers, and other available contact information. This is the most common type of data append project.
Reverse Email Append
You provide email addresses, and we identify the associated company name, mailing address, and, where available, a top-level executive's first and last name.
A record with nothing but a company name and a postal address can come back with a verified email address, a direct phone number, an executive contact, and the firmographic detail your team needs to prioritise it. The value shows up in what you can do next. Complete records let you segment rather than blast by industry, company size, location, or whatever parameters matter to your campaign. A blanket email announcing a new product does far less than a message that reaches the right part of your list with something relevant to them.
Geo-coding is a good example of these data appends in action. Appending geographic data lets you decide where your marketing effort is worth spending. For example, you wouldn’t promote winter coats to customers in Hawaii or roofing materials to neighborhoods dominated by apartment buildings. Geographic data can help you identify trends by region, state, city, or ZIP Code.
Personalization works the same way. Even adding a customer’s first name makes communication feel more relevant. With additional company, location, or industry data, your team can create more meaningful campaigns that improve engagement and deliver better results. Engagement follows relevance, and relevance depends on having the fields to work with in the first place.
Two questions before we start
How many file records do you want appended, and what input fields do you have available?
Types of Data Append Services
Every business has different data challenges, which is why we offer multiple data appending services designed to enrich existing customer records.
Email Append Services
Our email append services help you identify missing email addresses for existing customer or prospect records. Many clients provide business names and mailing addresses, and we append corresponding business email addresses whenever reliable matches are available.
We also perform Reverse Email Append projects. You provide existing email addresses, and we identify available business information such as company name, mailing address, and executive contact details when applicable.
Business email append is ideal for improving CRM completeness, supporting outbound sales and marketing, or reconnecting with existing prospects. We also offer consumer email append services for qualifying projects when appropriate data sources are available.
Because every database is different, we begin by reviewing your file rather than providing a one-size-fits-all estimage. For pricing details, see Accuracy, Pricing & Turnaround below.
It’s important to understand that an appended email address isn’t the same as an opt-in marketing contact. You remain responsible for complying with all applicable email marketing regulations and obtaining any permissions required for their intended use.
Before You Send to Appended Email Addresses
- Check your email platform’s terms of service. Some providers restrict sending to appended or third-party email lists.
- Verify appended email addresses before launching a campaign to reduce bounce rates and protect your sender reputation. Unverified appended lists can carry invalid or spam-trap addresses that push your bounce rate high enough to damage your sender reputation.
- Begin with a brief introductory email explaining how you obtained the recipient's email address and why you're reaching out, and provide a clear, easy way to opt out before sending promotional campaigns.
- Start with a small segment before reaching out to your entire database.
- If you're contacting recipients outside the United States, remember that an appended email address does not establish consent. Make sure your outreach complies with applicable laws, such as GDPR or CASL, and seek legal guidance when necessary.
We would rather tell you this up front than have you learn it from your bounce rate.
Need verified email addresses? Ask your data specialist about adding Email Validation Services when requesting your Free Match Test.
Phone Append Services
Our phone append services help you add missing telephone numbers to existing customer and prospect records, making your CRM more complete and giving your team additional ways to communicate.
Clients often submit business names and mailing addresses for business phone appending, allowing us to append phone numbers where reliable matches are available. Depending on the project, we may append business phone numbers, direct numbers, mobile numbers, or landline numbers.
We also offer reverse phone append services for projects where a client starts with an existing phone number. Where reliable matches are available, we can use that number to identify associated business information or contact details.
Our phone appending services are available for both business and consumer records. Telephone appending can include landline and mobile numbers where available, with match rates depending heavily on the completeness and accuracy of the source file.
For telephone append projects, the more identifying information you can provide, the better the opportunity for a reliable match. A file containing a company name and full postal address will generally produce stronger results than one containing only a partial name. Like all data append projects, phone append results depend on the quality of the information you provide, and more complete input files generally lead to stronger match rates.
Mailing Address Append Services
Accurate mailing information remains essential for direct mail marketing, customer communications, and maintaining a healthy CRM. Our address append services help you complete missing postal information and improve the overall quality of your customer databases.
We also perform reverse address append projects, where you provide a mailing address and we identify the associated business or contact details. Postal appending services like these are usually the starting point for a direct mail campaign if you need to append address data to records that have a name but nowhere to send mail, that is where we begin.
Whether you’re missing a business mailing address or need to update an existing record, our team can append available postal data to qualified records. We also perform mailing address append projects that support customer retention campaigns, sales outreach, and ongoing database maintenance.
When appropriate, address append projects can be combined with USPS address standardization to improve deliverability and mailing efficiency. Many clients also pair address appending with NCOA processing and CASS certification to help identify address changes, standardize mailing records, and reduce undeliverable mail.
Geographic and Geo-Coding Append
Geo-coding appends geographic data to your existing records so you can segment by location. That might mean prioritising the regions where your product actually makes sense, routing leads to the right sales territory, or spotting patterns that only show up at state or ZIP code level.
Geographic append works alongside mailing address append: one completes the address, the other makes it usable for targeting.
Social Media Append
Social media appending services are available for qualifying business records. Social media details can be appended where reliable matches are available.
Social profile appending gives sales and marketing teams another channel to research and reach a contact alongside email and phone.
Business and Consumer Data Append
Not every business data appending project focuses solely on contact information, and you may want to build richer customer profile appends that improve targeting, segmentation, and sales intelligence.
Our B2B data append services can enhance your business records with valuable firmographic and technographic information, including SIC and NAICS codes, company revenue, employee count, industry classification, executive names and job titles, technographic information, and company profile details.
For organizations serving individual consumers, our consumer data append services can enrich customer records. This is done through available demographic data append services for information like age ranges, household composition, estimated income, homeownership indicators, lifestyle characteristics, and additional demographic append services.
Our Data Append Process
We are a data appending service, not data appending software. You are not buying a tool to run yourself, whether you need to append database records for a single campaign or maintain them continuously, a specialist handles the work and tells you what your file can realistically return.
Our data append process is designed to be simple, transparent, and efficient. From your initial upload to final delivery, our team keeps the process straightforward while providing personalized support every step of the way. Here’s how it works.
- Step 1: Upload Your File: Start by sending us your existing customer or prospect database.
- Step 2: We Match Your Records: Our specialists compare your records against trusted data sources to identify available matches.
- Step 3: We Append Missing Data: Once matching is complete, we append the requested information to qualifying records.
- Step 4: Review the Results: Before delivery, we review the completed file to ensure it aligns with the requested append services.
- Step 5: Receive Your Completed File: Most projects are completed within 24 hours. Files submitted on a Friday are delivered by close of business the following Monday.
Accuracy, Pricing & Turnaround
The success of any data append service depends largely on the quality of the information received. The more complete and accurate your input file, the more opportunities we have to identify reliable matches.
An accurate append depends less on our data sources than on what you send us. That is not a disclaimer, it is the single biggest factor in your result. A file of business names with full postal addresses gives us a great deal to match against. A file of personal email addresses at consumer domains gives us very little, because those addresses are not tied to a company, so asking us to append business names to them will not return many matches no matter how good the data sources are.
While many projects achieve typical match rates between 25% and 40%, some databases perform considerably better. Rather than making assumptions, we evaluate each project individually based on the fields included in your file and the type of information you’re requesting.
If you have seen data append companies promising 80% or 90% match rates, it is worth asking what they are counting. A match is not the same as a usable, deliverable record. We quote the range we actually deliver, and we tell you what your file is likely to return before you pay for anything.
Data append pricing is straightforward: $60 per thousand matched records, with a $500 minimum project charge. You are billed on the records we actually append, not on everything you send us.
That minimum covers a specialist reviewing your input file before we run anything, the match work itself, and a review of the completed file before delivery. The process is the same whether you send five thousand records or fifty thousand, which is why larger files get better value per record.
The best way to determine expected match rates, pricing, and turnaround is to let us review your database. We’ll evaluate your input file, explain what information is likely to be appended, and recommend the most effective approach based on your goals.
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[FAQs]
Frequently Asked Questions
Have a question about Jared’s Leads and our lists? Let us help!
Pricing is $60 per thousand matched records with a $500 minimum project charge, so you pay for the data we actually find rather than for every record you send. The final cost depends on the size of your database and the type of information you want appended. We’ll review your input file and discuss your goals before recommending an approach.
Because of the $500 minimum, smaller files cost the same as larger ones up to a point. If you have more records than that threshold, it usually makes sense to send them all in one project rather than splitting into several runs.
Two things tell us almost everything: how many records are in your input file, and which fields you already have. A file of business names with postal addresses behaves very differently from a list of email addresses alone, and knowing which you have lets us give you a realistic answer before you commit.
Most projects are completed within 24 hours after we receive your file. Projects submitted on Fridays are typically delivered by the close of business on the following Monday. If your project requires multiple append types or additional processing, we’ll discuss the expected timeline with you before work begins.
Many projects achieve match rates between 25% and 40%, while others perform significantly better. Rather than promising unrealistic results, we evaluate each project individually and provide honest expectations based on your existing data.
The completeness and accuracy of your input file, more than anything else. Records with several usable fields match far better than sparse ones, and the type of data matters too — a file of personal email addresses will not produce many business name matches, because those domains are not tied to companies.
Yes. Our email appending services can identify business email addresses for qualifying customer and prospect records when reliable matches are available. We also perform reverse email append projects, where clients provide an email address and request additional information such as the associated company name, mailing address, and executive contact information.
Yes. We offer phone append and reverse phone append services for both business and consumer databases, depending on the project requirements and available data sources. Appended phone numbers are intended to enrich your existing customer records. They shouldn’t be assumed to be verified for outbound calling or screened against Do Not Call (DNC) registries.
Yes. Social media details can be appended for qualifying business records where reliable matches are available.
Appended email addresses can be verified before delivery, so you receive addresses that have been checked rather than just matched. Ask about adding validation when you request your Free Match Test.
It usually isn’t. it is counted differently. If you have seen data append companies promising 80% or 90%, it is worth asking what they are counting. A match is not the same as a usable, deliverable record. We quote the range we actually deliver.
Data append adds information that is missing from your existing records, such as email addresses, phone numbers, mailing addresses, or business attributes. Data hygiene focuses on improving the quality of the data you already have by correcting errors, removing duplicate records, standardizing formats, and updating outdated information.
Get a Free Match Test
Your existing customer database may contain far more value than you realize. By enriching the records you already own, you can increase CRM performance, use marketing data append to strengthen campaigns, support your sales team, and create meaningful customer relationships.
To get started, we only need two things from you:
1. How many records are in your input file?
2. Which fields do you already have?
Those two answers let us tell you what is realistically achievable before you commit to anything. If you’re ready to turn incomplete records into a more valuable business asset, contact us at Jared’s Leads today to request your Free Match Test. You can expect a trusted data append company with 18+ years of experience, a three-time Inc. 5000 honoree, an A+ BBB Rating, and the support of a real data specialist rather than a ticket queue.
