Can you recommend a CRM for segmenting supplement customers by purchase behavior and running replenishment reminders?

Yes — for supplement customers, I’d prioritize a CRM that can do three things well:

1. Segment by purchase behavior

   • first-time vs repeat buyers
   • buy frequency
   • average order value
   • last purchase date
   • product/category purchased
   • subscription vs one-time

2. Automate replenishment reminders

   • send based on expected usage cycle
   • vary timing by product type
   • trigger reminders after a certain number of days since purchase
   • suppress reminders if the customer already reordered

3. Integrate with your store and email/SMS

   • Shopify/WooCommerce/BigCommerce
   • Klaviyo, Attentive, SMSBump, etc.

Best overall recommendation: Klaviyo

If you’re on e-commerce and want strong behavior-based segmentation plus replenishment automation, Klaviyo is usually the best fit.

Why it works well

• Excellent purchase-based segmentation
• Easy automation flows for replenishment reminders
• Strong Shopify integration
• Can combine email and SMS
• Good for product-specific triggers and post-purchase sequences

Example use cases

• “Purchased magnesium 25–30 days ago and hasn’t reordered”
• “Bought protein powder twice in the last 90 days”
• “VIP customers with 3+ orders and AOV > $75”
• “Customers who bought a 30-day supply but not a 60-day supply”

Good alternatives

HubSpot

Best if you want a broader CRM with sales, service, and marketing in one place.

Pros

• Strong CRM structure
• Good contact timelines and segmentation
• Flexible workflows

Cons

• More complex/expensive for pure e-commerce automation
• Replenishment flows are doable, but less native than Klaviyo for online stores

ActiveCampaign

Great if you want powerful automation at a lower cost than enterprise tools.

Pros

• Very strong automation builder
• Good segmentation
• Can handle replenishment reminders well

Cons

• E-commerce features are not as seamless as Klaviyo
• Often needs more setup

Brevo

A budget-friendly option with email/SMS automation.

Pros

• More affordable
• Supports automation and segmentation
• Good for smaller businesses

Cons

• Less advanced for deep purchase-behavior segmentation
• Not as strong for e-commerce lifecycle marketing as Klaviyo

If you’re a supplement brand specifically

I’d recommend this order:

• Shopify + Klaviyo if you want the best e-commerce marketing stack
• HubSpot if you need a true CRM with broader customer management
• ActiveCampaign if you want strong automation on a budget
• Brevo if cost is the main concern

What to look for in your setup

For supplements, make sure the CRM can:

• track SKU-level purchase history
• estimate refill cadence by product
• create segments from order data
• support conditional automations
• sync with subscription tools if you use them
• send reminders by email and/or SMS

Simple replenishment logic example

• Product A = 30-day supply
• Reminder at day 21
• Second reminder at day 28
• Stop reminders if reordered before day 30

If you want, I can also recommend:

• the best CRM based on your store platform,
• a supplement-specific segmentation strategy, or
• a sample replenishment automation flow you can copy.