Email Services
Let Northwest Database Services do the work. Send your email file to us and we will do a thorough check of all the addresses on it. For each address, we’ll verify the syntax, that the domain of the address exists and can receive email, and that the mailbox exists at that domain. Our service uses advanced validation techniques and provides the quickest, easiest, and most accurate way to check an email list without tying up any of your own resources.
Email Address Verification (aka Validation)
Verify Email Addresses
Northwest Database Services’ email validation service determines which of your email addresses are valid and can receive email.
Use validation for email list hygiene to verify email addresses and:
- Identify which email addresses in your customer file are deliverable or not.
- Reduce email marketing costs due to emailing undeliverable addresses.
- Recover valid email addresses that were incorrectly classified as dead.
- Improve data quality.
- Increase the accuracy of your marketing metrics.
How Email Verification Works
Northwest Database provides the fastest and most accurate email address validation available and fully complies with Internet standards. Not only does our system fully recognize all forms of valid email addresses, but it can also verify the domain of the address and whether the user exists at that domain.
Northwest Database can perform the following escalating series of checks to verify an email address:
- Detect general format and syntax errors in email addresses.
- Ensure addresses use a valid top-level domain (e.g. .com, .net, .jp, .biz, etc.).
- Detect improper email address formats for common domains such as Hotmail and AOL.
- Block users, domains, and entire addresses that you define as illegitimate.
- Verify whether the domains of email addresses exist.
- Confirm that the domains can receive email.
Determine whether the email addresses can receive email.
Northwest Database Services Provides More Results
Northwest Database Services provides more results than competing services, which have single-digit match rates to business addresses. Northwest Database Services will first append as many matches as possible using our proprietary B2B Email Append service, and, if we do not obtain a work address for a contact, we’ll match to our consumer database. This two-pronged approach not only provides you the best data possible, but it also maximizes your results. Northwest Database Services has obtained match rates as high as 45%!

B2B Email Append
Find Your Business Contacts’ Email Addresses
Northwest Database Services Business Email Appending service uses your business customers’ names, company names, and postal addresses to derive their email addresses and append them to your list.
Email is increasingly the preferred method for business communications. By adding email to your marketing efforts, you’ll save time and money and increase your ability to communicate with your customers.


The Value Of A Business Email Address
Your customers’ work addresses are more valuable than personal email addresses. People check their work email five days a week; therefore, your mail is more likely to be received and read. A personal address is usually one of several your contact has and may not be actively used.
How B2B Email Append Works
Step 1: We receive your customer data.
Your customer file, including company name, will be received and standardized by Northwest Database Services. We’ll remove duplicate records and apply standard address hygiene including CASS (Coding Accuracy Support System) processing. We work with most data formats, and your information will always be protected within our secure system environment.
Step 2: The match is performed.
We locate the domain used for email by your contact’s company. (e.g., @us.ibm.com for IBM). The naming convention (e.g., firstname.lastname) for that domain is determined by consulting our database of ninety million unique email addresses. The contact’s email address is then derived by following the pattern for the domain.
Step 3: A permission request is sent.
We create and send a customized permission request message that will direct your customer to a web site with your logo. There, your customer can either opt-out of future email messages from you, update their contact information, or provide an alternate contact. If our first derivative of the contact’s email address is unsuccessful, we will attempt other possible nicknames (e.g., William to Bill) or other common naming conventions. If the address remains undeliverable, it is discarded.
Step 4: We return your file with email addresses appended.
All undeliverable matches are omitted, and people who unsubscribed are flagged. A final file containing only deliverable matches is returned to you. The complete process takes about 4 to 6 weeks. This allows for us to give the recipient the chance to opt-out.
Required Fields: First Name, Last Name, Company Name, Street Address, City, State, Zip
Consumer Email Append
Add Email Addresses To Your File
Northwest Database Services specializes in Email Append, which uses your customers’ names and postal addresses to quickly find their email addresses.
You can boost sales and reduce costs by marketing to your current customers through email. We maximize the accuracy and quantity of email addresses you’ll receive by using our in-house database of over 250,000,000 opt-in consumer records in combination with our industry leading technology.
Why Northwest Database Services?
- Results that work – You get accurately matched email addresses all verified with our validation service.
- 100% Opt-in – All emails are permission-based and CAN-SPAM compliant.
- Fast Turnaround – Receive your match report within 48 hours!
- High match rates – 20% on average!
Before you rent lists from someone else, first use our residential email appending service to build an email list from your own customer files. One of Email Append’s many benefits is that in a matter of days, the reach of your email marketing program can be significantly extended. Need business email addresses? Use our business email appending service.
Email Append For Consumer Data
Email Append uses your customers’ names and postal addresses to append accurate, deliverable email addresses to your customer database in four straightforward steps:

Step 1. We receive your customer data.
All we need to start the process is your list of customer names with their postal addresses. We work with most data formats, and your information will always be protected within our secure system environment. We’ll remove duplicate records and apply standard postal address hygiene including CASS & NCOA.
Step 2. The match is performed.
Your customer file is matched against our database of over 150,000,000 consumer records to retrieve the corresponding email addresses. We consistently find email addresses for 10 – 20% of all records that are submitted to us.
Step 3. A permission request is sent.
We create and send a customized permission request message that will direct your customer to a website with your logo. There, your customer can either opt-out of future email messages from you, update their contact information, or provide an alternate contact. See a sample permission email.
Step 4. We return your database with email addresses appended.
All undeliverable matches are omitted, and opt-out responders are flagged. A final file containing deliverable matches is returned to you.
Required Fields: First Name, Last Name, Street Address, City, State, Zip
A Sample Consumer Permission Email
Subject: Marketer requests your permission
You are receiving this e-mail as a customer of Marketer. If you no longer wish to receive e-mail communications from Marketer, please see below.
————————————————————-
At Marketer, we appreciate your business. Occasionally, we would like to communicate with you via e-mail and send you exciting and up-to-date information on special promotions, new products, or services. We value you as a loyal customer, and we are presently seeking your permission and the privilege to serve you as efficiently as possible.
If you prefer not to receive e-mail from Marketer (or if you would like to update your e-mail address), please click here.
If at any time in the future you wish to stop receiving e-mails from us, a means to do so is made available on every e-mail we send.
We thank you for the opportunity to be of service – and for your continued business.
Sincerely,
Your friends at Marketer
100 Main Street
Small Town, MI 10000
Reverse Email Append: Add Postal Address to your Email File
Northwest Database Services’ reverse email appending service will enhance your email database by adding names and postal addresses to it. With this information, you’ll be able to:
- Communicate with your customers through direct mail.
- Better segment your database based on geography.
- Personalize your communications.
- Append demographic information.
Our reverse append service matches 25% to 50% of most input files with the fastest turnaround, and all results are certified by the United States Postal Service’s Coding Accuracy Support System (CASS) for accurate postal delivery at discount rates. In addition, we also use the National Change of Address System (NCOA) to ensure that your data is current.
Email Change Of Address (ECOA)
Email Update helps you retain your customers by replacing old, undeliverable email addresses with the new, current addresses for your customers.
Over 30% of email addresses change each year – much faster than postal addresses – and Northwest Database Services’ ECOA solution can help you stay in touch with your customers; even if they move, change jobs, or change ISPs. With the average email list having a 13% bounce rate, undeliverable email is a pervasive problem representing reduced response rates, lost sales opportunities, and increased costs.
Your customers are valuable, and industry statistics show that it is much more cost effective to retain your existing customers than acquire new ones:
- Email customer acquisition costs average $114 – Jupiter Media Metrix
- Acquiring a customer costs 5 to 10 times more than retaining one – eMarketer
- A 5% increase in retention yields profit increases of 25% to 100% – Bain and Co.
- Repeat customers spend an average 67% more – Bain and Co.
- Use Northwest Database Services Email Update service to keep in contact with your customers.
How Email Change Of Address Works
Northwest Database Services utilizes a database of over 15 million email address changes within the past 2 years. We can typically update 5% to 10% of an email list within two weeks and over 20% of a list on an annual basis. The Email Update process takes a few simple steps:
- Send us a list of your undeliverable email addresses.
- Northwest Database Services matches your list to our ECOA database.
- Your customers are sent emails inviting them to share their current addresses.
- Your updated database is returned to you with a summary report.
Phone Number Append
Add Phone Numbers to Your List
With access to nearly half a billion phone listings, Northwest Database Services uses one of the most comprehensive and unique data sets in the industry. Our Phone Number Hygiene service will help you efficiently manage your contact and customer data. Whether you need consumer, mobile, business or reverse phone append services, we’ve got you covered! Please see below for more details on our full phone number hygiene services:
Composite Consumer Phone Append:
Phone Number to Name/Postal Address
Our Composite Consumer Phone Append uses a two-step process that adds compiled landlines to all input names and addresses, and then appends Directory Assistance landlines to all input names and addresses keeping all unique Directory Assistance appends.
- Indication: Appends land line to name and postal address using compiled data.
- Requires: First Name, Last Name, Street Address, City, State and ZIP Code.
- Data Sources: Compiled, Directory Assistance, Mobile Vital.
- Statistics: Average match rate is 60%, Covers United States and Puerto Rico.
- Reverse Consumer Phone Append:
Name/ Postal Address to Phone Number
- Indication: Appends name and phone number of last reported occupant at input Address.
- Requires: Street Address, City, State and ZIP Code.
- Data Sources: Compiled, Directory Assistance, Mobile Vital.
- Statistics: Average match rate is 60%, Covers United States and Puerto Rico.
Whether you need a business phone or address, our data can also provide you with SIC Codes, revenue, number of employees and other relevant information about the businesses you need to reach.
Composite Business Phone Append
Phone Number to Company/Postal Address
Our Composite Business Phone Append matches your file against two major databases to provide you with a more thorough result:
- Appends compiled business landlines to all input names and addresses, including appending contact name where available, time zone and fax number as available (up to three records returned),
- Append Directory Assistance landlines to all input names and addresses and keep all unique Directory Assistance records (does not append contact name, time zone or fax number).
- Indication: Appends phone to business name and postal address.
- Requires: Business Name, City and State.
- Data Sources: Compiled, Directory Assistance Vital.
- Statistics: Average match rate is 50%, Covers United States and Puerto Rico.
- Reverse Business Phone Append:
Business Name/Postal Address to Phone Number
- Indication: Appends business name and postal address of currently listed occupant.
- Requires: Street Address, City, State and ZIP Code.
- Data Sources: Compiled, Directory Assistance Vital.
- Statistics: Average match rate is 50%, Covers United States and Puerto Rico.
We Are Here To Help!
Office
Sandersville, GA 31082
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Call Us
(478)412-2156