You have several thousand contacts in your email database, but a large portion of them no longer open your emails and your open rate is low?
That doesn’t mean you’ve lost those contacts.
Some contacts have changed their interests, some have stopped using the email address they provided, some have simply become tired of your messages, while others may still be interested in your brand but may no longer find the content you send relevant enough.
The problem arises when you keep inactive contacts in the same database for years and continue sending campaigns as if all contacts are equally interested.
That’s why it’s important not to look at inactive contacts simply as a number in your email database, but as a segment that requires a different strategy.
In this guide, we’ll explain:
- why contacts become inactive
- how to identify inactive contacts
- how to create a reactivation strategy
- when to stop reactivation efforts
- how to clean your email database
- how to maintain a healthy and engaged database in the long term
Why Do Contacts Become Inactive?
Inactivity in an email database can happen for many different reasons. It’s important to understand that a contact who doesn’t open your emails isn’t automatically a bad contact.
Before removing them from your database, you need to understand what has changed.
1. The Content Is No Longer Relevant
One of the most common reasons is a change in interests.
For example, someone subscribed to your newsletter because they wanted a guide to digital marketing. Several months later, they are no longer interested in that topic but are still on your list.
If you continue sending them the same content, engagement will gradually decline.
That’s why segmentation is important. Contacts shouldn’t receive the same messages simply because they are in the same database.
2. You’re Sending Too Many Emails
If you have gone from sending one email per week to four or five campaigns per week, your database can become saturated.
Even people who initially wanted to receive your messages may start ignoring them if their inbox is constantly overloaded.
3. You’re Sending Too Few Emails
The opposite situation can also cause a problem.
If you collected someone’s contact details a year ago and then sent them only a few emails, there’s a good chance they don’t even remember who you are anymore.
4. The Contact Is No Longer Interested in the Product
Interests change.
Someone who was considering purchasing your product six months ago may have already bought an alternative, changed jobs, or simply no longer have a need for that product.
That doesn’t necessarily mean your email marketing is bad.
It simply means that the person is no longer at the same stage of the customer journey.
5. The Email Address Is No Longer Active
People change jobs, companies, email providers, or simply stop using a particular address.
This issue is particularly common with B2B databases.
For example, an employee who provided a business email address two years ago may now work for a completely different company.
6. The Contact Subscribed Only for a Specific Piece of Content or Offer
Lead magnets are excellent for building a database, but they can also attract contacts who only want what you offered at the time they subscribed.
This is a common example with PDF guides, checklists, or ebooks.
A person downloads the guide but was never actually interested in receiving your regular newsletters.
If you don’t segment these contacts, they can eventually make up a significant portion of your database.
7. Emails Are Ending Up in Spam or the Promotions Tab
Sometimes the problem isn’t that a contact doesn’t want to read your emails, but that your email isn’t reaching the right place.
Deliverability depends on numerous factors, including sender reputation, domain authentication, spam complaints, and recipient behavior.
Google, for example, emphasizes the importance of authentication, easy unsubscribing, and a low spam complaint rate for marketing email senders.
That’s why it’s important to distinguish between a contact who didn’t open an email and a contact whose email didn’t successfully reach the inbox.
What Does It Actually Mean for a Contact to Be Inactive?
There is no universal definition of an inactive contact.
A contact who hasn’t opened an email for 30 days isn’t necessarily inactive if you send a newsletter once a month.
On the other hand, if you send three emails per week, 30 days without any activity can be a serious signal.
That’s why the criteria should be adapted to your sending frequency, industry, and length of the sales cycle.
One practical approach is to divide contacts into several groups.
Active contacts are those who have opened or clicked on one of your emails within the last 30 days. You can continue sending them regular campaigns.
Mildly inactive contacts have had no significant activity for 30 to 90 days. For this group, you can try offering more relevant content or changing the way you communicate.
Inactive contacts have shown no engagement for 90 to 180 days. This is a good time to launch a reactivation campaign.
Long-term inactive contacts have shown no activity for more than 180 days. After attempting reactivation, you can consider removing or archiving them.
These are not universal rules. The timeframes should be adapted to your business.
How to Create a Reactivation Strategy for Inactive Contacts?
Before deleting inactive contacts, try to win them back.
But don’t send just one email with the subject line: We Miss You!
Reactivation should be a planned process, similar to the process of nurturing leads.
1. First, Create a Segment of Inactive Contacts
Don’t put your entire database into one segment.
Create criteria based on:
- last open
- last click
- number of emails sent without a response
- previous purchase
- product they showed interest in
- source they came from
- date they subscribed
- previous purchase value
This is important because two inactive contacts are not necessarily the same.
A customer who spent €500 last year and hasn’t opened a single email in the past six months is not the same as someone who signed up yesterday for a free ebook.
2. Try to Understand the Reason for Inactivity
Instead of immediately offering a discount, try to find out what the contact wants.
For example: Would you like to continue receiving our emails?
And offer several options:
- Yes, I want more tips
- I only want special offers
- I want to receive emails less frequently
- I no longer want to receive them
This approach can give you much more information than simply looking at the open rate.
3. Create a Reactivation Email Sequence
Instead of sending one email, you can create a series of several messages.
Remind them why they subscribed, what they get from you, and why they initially wanted to receive your emails.
Offer something relevant—something that provides a concrete reason to return. For example, a useful guide, an exclusive offer, a free consultation, a new product, or a gift.
It’s important that the offer is connected to the contact’s previous interests.
If the contact hasn’t responded to previous messages, be direct and ask whether they want you to stop sending them emails.
If there is still no response, the contact can be moved to a segment for database cleaning.
How Many Emails Should You Send in a Reactivation Campaign?
There is no universal number.
For most databases, three emails are a good starting point for testing:
- Reminder
- Relevant value or offer
- Last chance to stay subscribed
More important than the actual number of emails is leaving enough time between them and ensuring that each email has a different purpose.
What Should You Do with Contacts That Still Don’t Respond?
This is the part many email marketers skip.
If you have tried to reactivate a contact and they still don’t open, click, or show any other signal of activity, it may no longer make sense to treat them as an active subscriber.
This brings us to the second part of the strategy: Email Database Cleaning.
Cleaning your database doesn’t simply mean deleting contacts.
The goal is to remove or isolate contacts that no longer have real value for email communication.
How to Clean Your Email Database?
1. Remove Invalid Email Addresses
Hard bounce addresses represent a permanent deliverability problem.
Reasons may include:
- non-existent address
- incorrectly entered address
- deactivated mailbox
- non-existent domain
You should immediately stop sending emails to these addresses.
2. Separate Inactive Contacts from “Stale” Contacts
This is an important distinction.
An inactive contact is someone you regularly send emails to but who doesn’t show engagement.
A stale contact is someone you haven’t sent anything to for a long time.
These two groups shouldn’t be treated identically.
Stale contacts should first be re-engaged or have their interest confirmed before you continue including them in regular campaigns.
3. Don’t Clean Your Database Based Only on Open Rate
Open rate can be a useful signal, but it shouldn’t be the only criterion.
Also look at:
- clicks
- purchases
- website visits
- email replies
- product usage
- other first-party signals
- recency of the last activity
It’s especially important to take customers into account.
A contact who doesn’t open your newsletter but purchased a product last week is not the same as a contact who hasn’t shown any activity signal for a year.
When Should You Delete Inactive Contacts?
The best question isn’t how long it has been since a contact opened an email, but whether there is a real reason to believe that this contact will become active again.
If you have:
- properly segmented the contact
- sent a reactivation sequence
- offered relevant content
- provided the option to change email frequency
- provided an easy unsubscribe option
and the contact still shows no activity, it’s time to consider removing them from your active email database.
Why Is Email Database Cleaning Important?
A large database doesn’t automatically mean a good database.
If you have 100,000 contacts but 60,000 are completely inactive, the number of contacts itself doesn’t represent much value.
It’s much more important to have a database of people who want to receive your emails and show interest in your brand.
In addition, managing inactive and outdated addresses can help maintain better deliverability and reduce unnecessary bounces and spam complaints.
How to Prevent Contacts from Becoming Inactive?
The best strategy isn’t just reactivation, but preventing inactivity in the first place.
You can achieve this by segmenting your database from the beginning.
Don’t send the same content to all contacts. Use data such as:
- interests
- previous purchases
- website behavior
- engagement
- customer journey stage
- purchase frequency
The more relevant the content, the greater the chance that the contact will continue to engage.
A preference center can help contacts choose the type of communication that works for them instead of simply unsubscribing from everything.
Automate Reactivation
You don’t have to wait until your database is full of inactive contacts.
You can create an automation that automatically identifies contacts who haven’t engaged for a certain period and adds them to a reactivation flow.
This way, database cleaning becomes an ongoing process rather than a project you carry out once a year.
How Can You Automate This in Sales Snap?
If you use Sales Snap for email marketing, you can set up reactivation logic so that contacts are automatically segmented based on their behavior.
For example:
Contact has had no engagement for 60 days → enters the reactivation segment → receives the first email.
If they click: Contact is active again → returns to regular campaigns.
If they don’t respond: Receives the second and third emails.
If there is still no activity: Moves to the database cleaning segment.
This way, you don’t have to manually check thousands of contacts.
A Simple Framework for Database Reactivation and Cleaning
If you want to turn this process into a concrete procedure, you can use the following six steps:
1. Identify
Find contacts who haven’t engaged for an extended period of time.
2. Segment
Divide them based on interests, purchases, and previous behavior.
3. Reactivate
Send several relevant emails using different approaches.
4. Measure
Track clicks, purchases, and other activity signals—not just opens.
5. Clean
Remove or archive contacts who still show no interest after reactivation.
6. Automate
Create an automated process that will identify and handle inactive contacts on its own in the future.
Inactive Contacts Are Not Necessarily Lost Contacts
Before deleting them, try to understand why they stopped engaging and give them a relevant reason to come back.
At the same time, the goal isn’t to keep every contact that has ever been in your database forever.
A good email strategy requires balance: reactivate those who still have potential and remove those who no longer want to hear from you.
Ultimately, the goal isn’t to have the largest possible email database. The goal is to have a healthy database of people who want to hear from you.
If you want to automate segmentation, reactivation, and communication with your contacts, see how Sales Snap can help make email marketing more effective and easier to manage.