Home / Retention extras
Best retention extras in 2026, ranked by data
Last verified 2026-08-29
Back in Stock leads this category
at 4.9 ★ across 828 reviews
, followed by PostPilot and Rise.ai.
— ranking computed from tracked data; methodology below.
4.9 ★ (828) from free Free tier
7% — detected on 276 of 3,797 tracked DTC brands
Turn out-of-stock moments into waitlists. Auto-send restock alerts via email, SMS & push. Preorders, wishlists & demand insights. Trusted since 2011.
Best for: These reviews suggest the app fits Shopify merchants that frequently sell out products and want managed, support-backed back-in-stock or preorder workflows.
Watch out: Merchants who expect full self-service control may find some setup or management tasks require contacting support.
4.8 ★ (136) from free Free tier
Send personalized, triggered postcard campaigns to customers & prospects. Full funnel from retention to prospecting. As easy as email. Done-for-you service.
Best for: These reviews suggest the app fits ecommerce merchants that want managed, measurable direct-mail campaigns tied to Shopify customer data and supported by strategic account help.
Watch out: Prospective users should clarify cancellation terms and process upfront, since the only substantive negative review focused on difficulty canceling.
4.8 ★ (707) from $19.99/mo
4% — detected on 143 of 3,797 tracked DTC brands
Enhance customer loyalty and retention with Rise.ai’s Store Credit rewards, Gift Cards, and automated solutions. Streamline rewards into a single digital wallet
Not ranked (no App Store rating available): Swym Wishlist Plus
Methodology: score = App Store rating × 10 + log₁₀(review count) × 6
+ confirmed features × 0.75 + free tier × 3. All inputs are shown on each product's
profile page with verification dates. No vendor pays for placement; we currently
have no affiliate relationships in this category.
Back in Stock 
PostPilot 
Rise.ai