Klaviyo
Email and SMS marketing platform for online stores, with flows, segments and AI writing help.
- Free plan or free version
- Shopify app
- Developer API
SMS and email marketing platform for retail brands, focused on text message campaigns and sign-up forms.
Attentive is a messaging platform that grew out of SMS marketing for retail brands. Its sign-up units collect phone numbers and email addresses on the site, and its journeys send texts and emails triggered by browsing, carts and orders.
Text messages get read quickly, which is why stores use them for launches, restocks and abandoned carts. Two-way replies let shoppers ask a question by text and get an answer from the team. The same speed makes them easy to overuse, and unsubscribes are one tap away.
In the US, marketing texts need prior express written consent, a clear opt-out and attention to quiet hours. Check how the tool handles consent records before you import any existing list, and keep a record of where each number came from.
Not enough info yet on free plan or free version, writes copy, images or answers with AI. Check the tool's own site.
Listing written by HackCommerce, checked 2026-11-03. Report a correction or request removal. Back to email and sms.