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Organize your list with segments and tags so the right people get the right email at the right time.
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Full audit of an email program's deliverability setup. Finds problems, explains fixes in plain English.
Run email A/B tests that produce measurable results and guide future campaign decisions.
Create, schedule, and manage HTML email campaigns through the SendX REST API.
Pick the right SendX campaign type for any email marketing situation.
Navigate email privacy laws and stay compliant worldwide.
Master email authentication, reputation, and list hygiene to keep emails in the inbox.
| name | smart-segmentation |
| description | Organize your list with segments and tags so the right people get the right email at the right time. |
| category | campaign-strategy |
| difficulty | beginner |
This skill gives generic advice by default. Fill in your details below and it will tailor engagement tiers, dormancy windows, and sunset timelines to your business.
You're the traffic cop of your email list. With thousands of contacts in your database, you can't send everyone the same email—your product people care about features you don't mention to your support team, and new subscribers need onboarding while long-time subscribers need to be re-engaged. Segmentation is how you organize your list so the right person gets the right message. Without it, you're sending irrelevant email to everyone and wondering why engagement is low.
Activate this skill when you:
These three tools do different jobs. Use them wrong and you'll waste time.
Lists: Think of a list as a subscription. When someone joins your email list, they opt in to receive emails from that list. You can have multiple lists (Main List, Blog Subscribers, Webinar Attendees, Premium Members). Each list has:
Use lists when you want separate audiences that don't mix. A "Blog Subscribers" list is different from a "Customers" list—different signup source, different content expectations.
Tags: Think of a tag as a label. It doesn't represent subscription; it represents a characteristic or action. You can have unlimited tags and assign them via CSV import, API, automation, workflows, or manually. Someone on your list can have 0 tags or 50 tags. Examples: "Viewed pricing page," "Downloaded guide," "Attended webinar 2024," "Customer – eCommerce," "High engagement," "Bounced email."
Use tags when you want to mark a specific behavior or attribute on a contact within a list. A customer can be tagged both "Purchased in 2024" and "High engagement" and "Attended webinar."
Segments (Smart Lists): These are dynamic, rule-based groups. You set conditions, and SendX automatically adds/removes people as they match those rules. A segment is live—it updates in real time.
Example segment: "Active customers who haven't opened email in 30 days." SendX finds everyone with the tag "Purchased in last 12 months" and zero opens in the last 30 days, and groups them together. Tomorrow, if someone from that group opens an email, they're automatically removed from the segment.
Use segments when you want to target based on behavior or combinations of data, not just static labels.
When you create a segment, you can filter by:
AND/OR logic: You can layer these. "Customers who opened the last email and downloaded the product guide" (AND). Or "People who viewed pricing or requested a demo" (OR). Combine them to get as specific as you need.
You don't need 50 segments. Start with these five—they cover 80% of email marketing needs:
1. Engagement Tier: High, Medium, Low (based on SendX's engagement score)
SendX automatically calculates an engagement score for every contact (usually a 0-100 number). It's based on opens, clicks, list tenure, and how recently they've engaged. Use it.
Build segments for each tier using the engagement score field. Adjust the thresholds based on your industry and volume.
2. Lifecycle Stage: Subscriber, Customer, Churned
Where is someone in their journey with your company?
3. Source Tracking: Where they came from
Tag people when they sign up. Ads? Blog? Referral? Organic? This matters because channels tell you something about expectations.
Build a segment for each source and adjust your messaging tone.
4. Interest/Product Area: What they care about
If you sell multiple products or cover multiple topics, use tags and segments to split them.
Use custom fields (dropdown) and tags to mark interests. Then build segments for each.
5. Re-engagement Candidates: People who've gone dormant
Define "dormant" based on your sending frequency:
Create a segment called "Inactive 90 days" that targets these people. Build a win-back email series: "It's been a while—here's what you missed," etc. If they don't engage within another 30 days, move them to a sunset list (see Limitations).
Week 1: Start with source and engagement. Tag people based on where they signed up. Use SendX's engagement score to build high/medium/low segments. This alone helps.
Week 2-3: Add custom fields. Set up 2-3 custom fields that matter to your business (company size, industry, budget, product interest). Collect these on signup forms or import via CSV if you have historical data.
Week 4: Build lifecycle segments. Tag customers when they purchase. Tag partners, fans, beta testers—whatever matters. Use these tags to build segments.
Ongoing: Track behavior with custom events. If someone abandons a checkout, trigger a custom event "Abandoned checkout." Build a segment around it. If someone requests a demo, tag it and send a demo-specific nurture.
This is advanced but surprisingly useful: Segment by email provider domain (Gmail vs. Outlook vs. Yahoo vs. corporate).
Why? Different providers have different spam filters. Gmail users are used to heavy promotional email. Yahoo users are more conservative. Corporate emails (yourcompany.com) might need different messaging.
SendX can segment by MX domain. You could send a test campaign to a small Gmail segment, then roll it out more widely once you know it lands in the inbox (not spam).
Use this for A/B testing sender reputation and deliverability troubleshooting.
When someone asks "How do I segment my list?":
Start with what you know: Ask: Do you know where each subscriber came from? Do you track purchases? Do you know what people are interested in? Start there. Don't over-engineer.
Recommend the three-tier setup:
Connect segments to campaigns: Ask: What are you trying to achieve? "Reactivate inactive people?" Build an inactive segment. "Upsell customers?" Build a customer segment. Don't build segments in a vacuum.
Show them the engagement score: SendX has a built-in engagement score. It's one of the best predictors of who'll convert. Start by segmenting high/medium/low. You'll see immediate results (higher open rates on the high segment).
Set a sunset policy: This is uncomfortable but necessary. Anyone unengaged for 6+ months should be suppressed or deleted (check your legal obligation first). Dead weight in a list hurts deliverability. Tell them: "We'll keep the highly engaged people, sunset the silent ones, and re-engage the middle."
Here's what nobody wants to say but everyone needs to do: People who don't engage should be removed.
If someone hasn't opened an email in 6+ months and doesn't fit a specific re-engagement campaign, they're hurting your deliverability. ISPs (Gmail, Outlook, Yahoo) track bounce rates and engagement rates. If you mail a bunch of people who ignore you, your sender reputation tanks and even your good emails end up in spam.
Typical sunset policy:
It feels like giving up, but it's not. These people aren't going to convert. They're costing you sending volume and reputation. Delete them and focus on people who actually care.
