Automate Ecommerce Email Campaigns And Segment Shoppers With Omnisend

If you run an online store, you already know the email that earns money: the welcome note to a new subscriber, the campaign to people who bought last spring, the reminder to someone who left a cart. The hard part is keeping your subscriber list, your product catalog and your campaigns in step with what is actually happening in the store. Omnisend does that work, and it does it through an API, so your store, your other tools, or an AI assistant can add subscribers, build segments and send campaigns without anyone copying lists around.

What Omnisend does

Omnisend is an email and SMS marketing automation platform built for ecommerce, headquartered in Lithuania, with integrations into Shopify, BigCommerce, WooCommerce, Magento, Wix, Square Online and other storefronts. It brings together automation workflows, a campaign builder, segmentation, popups and forms, web push, product recommendations, A/B testing and reporting. It also runs hosted MCP servers, the connector standard AI assistants use to call tools. More on the Omnisend website.

What you can get done

Run campaigns and automations

Digital Marketing Management covers the two kinds of sending: campaigns you send once, and automations that run whenever a trigger fires, like a new signup.

• GET /campaigns lists your campaigns, including the drafts.
• POST /campaigns creates a new email campaign draft.
• GET /automations lists your automation workflows and which are enabled.
• POST /automations builds a new automation from a trigger and its steps.
• PATCH /automations/{id} edits an automation.

Keep subscribers up to date

Customer Data Management is your subscriber list, kept in step with the store.

• POST /contacts adds a new subscriber, or updates them if the email already exists.
• PATCH /contacts updates a contact using only their email address.
• GET /contacts lists contacts, such as everyone carrying a specific tag.
• DELETE /contacts/tags removes a tag from many contacts in one call.

Target the right shoppers

Customer Segmentation Management builds segments, saved rules that pick out a group of shoppers.

• POST /segments creates a segment from a set of conditions.
• GET /segments/{segmentID} shows the conditions behind a segment.
• GET /segments/{segmentID}/statistics tells you how many contacts match a segment right now.

Manage email templates

Marketing Management handles the content of the emails themselves.

• GET /email-templates lists your email templates.
• POST /email-templates creates a template from content sections.
• POST /email-content/{id}/render turns stored email content into HTML so you can preview it.

Workflows that put it together

A workflow is a recipe of several calls in order that finishes a real job. APIs.io catalogs 13 for Omnisend, including:

• Subscribe and Trigger Welcome adds a subscriber and fires the event that starts your welcome automation.
• Create and Send Campaign creates a campaign, confirms it, and queues it to send.
• Copy and Send Campaign reuses an existing campaign and sends the copy.
• Create Segment and Read Statistics builds a segment and reports how many people are in it.
• Refresh Product Catalog Entry replaces a product with its updated details.

Ask for it in plain language

Our conversational overlay for Omnisend maps everyday questions to the operation that answers them, so an AI assistant knows which call to make. These are the kinds of things you can ask:

• “How do I add a new subscriber, or update them if the email already exists?”
• “Which of my campaigns are still drafts?”
• “How many contacts match a segment right now?”
• “Which of my automation workflows are currently enabled?”
• “Can I remove a tag from many contacts in one call?”

You can see one in the Omnisend Automations phrasing overlay.

Getting started

Omnisend has a free tier with self-serve signup, and you call its hosted service. Start with the API documentation and the authentication guide; every request carries an API key or an OAuth token. On APIs.io, see the Omnisend profile, the Contacts API, the Campaigns API and the Products API. Wire up the welcome workflow first; it is the one every new subscriber sees.