Inactive users update email to win them back

An inactive users update is an email to people who signed up and drifted away, telling them what is new in the product and why it matters to them. It works when you have shipped something that fixes a reason people leave, or a feature many users never found. One feature, one benefit and one link back is the whole message. It is a cheap win if your list is clean and the feature is real.

How to do it

1. Define "inactive" in your data. For example: no login in 30 days, but activated at some point. Keep people who never activated in a separate segment, because they need onboarding help, not news.
2. Pick one thing to announce. Choose a new feature, or an old one the person never used. Match it to a reason you know they left, if you have one from a survey or support thread.
3. Write the benefit first. State what they can do now that they could not before, in one or two sentences. Put the feature name second.
4. Show it. A screenshot or short animation helps, and the email must still make sense when the image does not load.
5. Use one button that takes them straight to the feature, logged in if possible. Do not send them to a login page and a dashboard.
6. Send it from a person's name, with a plain subject line that says what changed, such as "Your reports now update daily".
7. Check results after a week: opens do not matter much, but returns to the product within 14 days, and unsubscribes and spam complaints do.

Examples

A roundup of SaaS reactivation emails by Userlist describes two that lead with product news. Close emails users to bring them back by telling them about the free tools it launched during the year. Nightwatch emails users who did not fully use their free trial. It says the product has improved and how those changes could help, and then gives next steps: restart the trial, watch a demo video or book a demo call. See Userlist's examples.

When it backfires

• Mailing dormant addresses hurts deliverability. Google's rules for bulk senders (5,000 or more messages a day to Gmail) require one-click unsubscribe on marketing messages and say to keep reported spam rates below 0.30%. Old lists produce complaints. Remove people who have not engaged in a long time before you send. See Google's sender guidelines.
• Marketing email law applies. In the US, CAN-SPAM requires a clear opt-out and gives you 10 business days to honor it. It covers all commercial messages, including a message to former customers announcing a new product line. See the FTC's guide.
• GIFs do not always play. Microsoft's support page says that if only the first frame of an animated GIF appears in Outlook, animations are turned off. Put the key message in the first frame and in the text.
• Nothing new to say. If the update is minor, the email reads like noise and teaches people to ignore you. Wait until you have something worth a click.
• Wrong audience. People who left because of price or a missing feature do not care about a cosmetic update.

If the email does not bring someone back, a last "should we close your account?" message is a reasonable follow-up. For people who are still active but under-using the product, see reduce activity churn.

Questions people ask

How do I bring back dormant users? Tell them one specific thing that is better now, link straight to it, and make leaving the list easy.

How do I re-engage inactive customers? Segment by why they left if you know, lead with value, and stop mailing people who never respond.

Sources

• Userlist: SaaS re-engagement emails, read Oct 8, 2026
• Google: Email sender guidelines, read Oct 8, 2026
• FTC: CAN-SPAM compliance guide, read Oct 8, 2026
• Microsoft: animated graphic doesn't work in Outlook, read Oct 8, 2026