▶What's the difference between Mailchimp and Klaviyo for ecommerce?
Mailchimp is general-purpose and best for SMBs starting out. Klaviyo is purpose-built for ecommerce with native product catalog integration, cart abandonment tracking, and customer lifetime value (CLV) metrics. Choose Mailchimp for content newsletters; Klaviyo for behavior-triggered ecommerce journeys.
▶How do I set up audience segmentation in Mailchimp?
Audience → Segment → Filter by purchase history, email engagement, location, custom fields, or survey responses. Save as dynamic or static. Dynamic segments update automatically as subscriber behavior changes; static snapshots at creation time. Use dynamic for re-engagement (inactive 60+ days), welcome series (new subscribers), or VIP (spent >$500).
▶What's A/B testing for subject lines and when should I use it?
Create two versions of the same email with different subject lines, send to 10-20% of your list, wait 1-2 hours, auto-send winner to the rest. Test ONE variable (subject line, send time, or content, not all three). A/B tests take ~4-8 hours to run; always test subject lines first (highest ROI). Average lift: 5-25% CTR.
▶How do I improve email deliverability and inbox placement?
Sender reputation matters: authenticate with SPF/DKIM/DMARC (Mailchimp does this by default), maintain >90% engagement rate (segment inactives monthly), use double opt-in, clean invalid addresses quarterly, monitor bounce rate (<3% good, >5% bad). Send from a consistent domain. Avoid spam trigger words. ISPs throttle senders with poor reputation; one bad campaign can tank your sender score.
▶What's an automation journey and how do I build one in Mailchimp?
Automation = triggered workflow. Welcome journey (Day 0: welcome → Day 3: intro offer → Day 7: social proof). Abandoned cart (Day 0: reminder → Day 1: add incentive → Day 3: final push). Re-engagement (6+ months inactive: win-back offer → segment to sunset if no open). Build in Automation → Journey → trigger (new subscriber, purchase, tag added, date-based) → email sequence → conditional branches (if opened, if clicked, if purchased).
▶How do I clean a messy email list and prevent future decay?
Remove undeliverable (hard bounces, spam complaints, unsubscribes immediately). Segment inactive: no opens in 180+ days. Send them a re-engagement campaign; remove if no open. Monthly cadence. Use Mailchimp's list hygiene tools. Enforce double opt-in on signup (reduces bad addresses 30-50%). Quarterly audit: bounced emails = sender score damage.
▶Should I use Mailchimp or migrate to HubSpot CRM?
Mailchimp for email-first workflows (newsletters, campaigns, SMB automation). HubSpot for CRM-first (contact management, deal tracking, sales + marketing alignment, enterprise workflows). Mailchimp integrates with HubSpot (sync contacts bi-directionally) so no migration needed unless you need full CRM. Many teams run both: HubSpot for B2B sales + marketing, Mailchimp for B2C email.