Is Slingshot cheaper than Klaviyo?

Yes, for back-in-stock-only use. Slingshot Starter is $19/month for 1,000 alerts; Pro is $59/month for 10,000. Klaviyo Email at the equivalent contact count starts around $200/month because back-in-stock is bundled inside the full marketing CRM.

Does Slingshot have a free plan like Klaviyo?

Yes. Slingshot's free plan includes 100 alerts per month, email channel, all six templates, and basic revenue tracking. No credit card required.

Does Slingshot support SMS like Klaviyo?

Yes, on the Pro plan. Flex SMS is pay-as-you-go at $0.015/message, US and Canada only, capped at $300/month so a viral product cannot bankrupt you. Includes opt-in approval flow for TCPA compliance.

Will my emails land as well as they do on Klaviyo?

On the Pro plan, yes. Slingshot Pro includes a custom-from email domain with DKIM verification, so alerts come from your own domain. Business address is auto-injected for CAN-SPAM, GDPR, and CASL compliance. Slingshot sends through Resend.

Can I run Slingshot alongside Klaviyo?

Yes. Many merchants downgrade Klaviyo to a smaller plan for their core marketing flows and use Slingshot just for back-in-stock alerts. Slingshot does not interfere with other Klaviyo flows.

Will you help me migrate?

Yes. Annual Slingshot plans include free white-glove migration. We import your Klaviyo subscriber list, preserve their product preferences, and rebuild your email templates to match your brand.

Klaviyo alternative

The focused Klaviyo alternative for Shopify back-in-stock alerts.

Slingshot is a Klaviyo alternative built specifically for Shopify back-in-stock notifications. Where Klaviyo bundles back-in-stock inside a $200+ per month marketing CRM, Slingshot does the one job — email, SMS, and an on-site widget — starting at $19 per month, with built-in per-alert revenue attribution Klaviyo lacks.

Last updated: May 6, 2026

TL;DR

Klaviyo Email starts around $200/month at 10,000 contacts. Slingshot Starter is $19/month for 1,000 back-in-stock alerts. Slingshot Pro is $59/month for 10,000 alerts.
Slingshot ships per-alert revenue attribution by default. Klaviyo requires manual reporting.
Both support email, SMS, and an on-site widget. Klaviyo bundles them inside a full CRM. Slingshot ships them as a single back-in-stock app.
Annual Slingshot plans include free white-glove migration: CSV import from Klaviyo plus template rebuild.

Slingshot vs Klaviyo for back-in-stock alerts

Feature	Slingshot	Klaviyo Email
Back-in-stock alerts	Yes	gated to Email plan
Revenue attribution per alert	Built-in	Manual reporting
Email + SMS + on-site widget	Yes	bundled with full CRM
Custom-from email domain (DKIM)	Pro plan	Yes
6 templates included	Yes	Yes
Pay only for back-in-stock	Yes	Bundled with marketing
Starting price (10k contacts equiv.)	$59/mo	$200+/mo

When to switch from Klaviyo to Slingshot

Slingshot replaces Klaviyo for stores that only need back-in-stock alerts. It does not replace Klaviyo for full email marketing, segmentation, or post-purchase flows.

Switch if

You only use Klaviyo for back-in-stock notifications, not the full marketing suite.
You want per-alert revenue attribution without manual reporting.
You need a back-in-stock app on a budget under $100/month.
You run a Shopify store doing 100 to 10,000 orders per month.

Stay on Klaviyo if

You rely on Klaviyo for full email marketing and segmentation.
You run abandoned-cart, post-purchase, or welcome flows from Klaviyo.
You need Klaviyo's CDP and predictive analytics.
You have less than 1,000 contacts and Klaviyo's free tier covers your needs.

How to migrate from Klaviyo in three steps

1
Export your Klaviyo back-in-stock list
From Klaviyo, export the segment of subscribers who signed up for back-in-stock notifications as CSV. Include email, phone, and product preference fields.
2
Install Slingshot from the Shopify App Store
One-click install. Slingshot syncs your products and inventory automatically. Pick a template and match your brand colors.
3
Import your subscribers
Upload the CSV. Slingshot preserves product preferences so existing signups stay matched. Annual plans include white-glove migration — we do the import and template rebuild for you.

Frequently asked questions

Switch to a focused back-in-stock app.

Free up to 100 alerts a month. Annual plans include free Klaviyo migration.

Install Free on Shopify