Answers

Should a small business buy an email list?

Ascent Vision · Published October 24, 2026

Usually not. People on a bought list often never asked to hear from you. Google's sender guidelines for Gmail accounts say not to purchase addresses from other companies and not to email people who did not sign up, and they warn that spam reports can lower your domain's reputation. The FTC's CAN-SPAM guide says the law covers all commercial email, and that hiring a company to handle your email marketing does not remove your responsibility. This is a plain summary, not legal advice.

What Google's sender guidelines say

Google's guidelines for sending to personal Gmail accounts tell anyone who manages a mailing list to send email only to people who want to get messages from them. They list sending practices to avoid, including purchasing email addresses from other companies and sending to people who did not sign up, and they say people who did not sign up might mark your messages as spam. The related answer on why business emails go to spam covers the rest of Gmail's guidelines.

The guidelines add that if messages from your domain are frequently reported as spam, future messages from you are more likely to be marked as spam, and that spam reports can lower your domain's reputation over time. Reading that plainly, complaints about a bad list can hurt the email you send to customers who did ask for it. These are a mailbox provider's rules, not a law.

What the FTC's guide says

The FTC's CAN-SPAM compliance guide says the law covers all commercial messages, not only bulk email; the related answer on email marketing lists its main requirements.

The guide says each separate email that breaks the law is subject to penalties. It says that if you hire a company to handle your email marketing, you "can't contract away your legal responsibility to comply with the law".

It separately lists harvesting email addresses, or generating them by dictionary attack, among conduct with criminal penalties. As general advice, that is a reason to ask where a seller's addresses came from; this answer does not claim that any particular list was gathered that way.

What this answer does not decide

This answer does not decide whether buying a particular list is lawful. That may depend on the full law, on the list and on where its addresses came from, and a lawyer can advise. This is a plain summary, not legal advice.

Better ways to grow a list

• Ask at the end of a job whether the customer would like occasional emails, and record when they agreed.
• Add a short sign-up to your website and contact form. Google's guidelines say to avoid opt-in forms that are checked by default, and note that some countries and regions restrict automatic opt-in.
• Confirm each address before adding it. Google's guidelines say to confirm each recipient's email address before subscribing them, and to periodically check that people want to stay subscribed.
• Ask people who already trust you, such as past customers and referral partners, to pass your sign-up on to someone who might want it.

Sources

1. Federal Trade Commission, "CAN-SPAM Act: A Compliance Guide for Business" (edited January 2024)
2. Google, "Email sender guidelines" (Gmail Help)

Related answers

• Is email marketing worth it for a small service business?
• How do you win back customers who have not come back?
• Why are my business emails going to spam?