Migration guide
Omnisend → Mailchimp
Inverse of the iteration-95 mailchimp-to-omnisend path. Omnisend is purpose-built for e-commerce: native email plus SMS plus push, pre-built Shopify / BigCommerce / WooCommerce flows for cart abandonment and browse abandonment. Mailchimp is a generalist platform with a much larger integration ecosystem, a broader customer-journey builder, and a multi-tier plan ladder ($13 / $20 / $350) vs Omnisend's two-paid-tier shape ($16 / $59 / Custom). Move from Omnisend to Mailchimp when your business has expanded beyond pure e-commerce, when you've outgrown Omnisend Pro's 2,500-contact ceiling without wanting a Custom contract, or when stakeholder pressure for a brand-name vendor is real. This migration is a feature-breadth upgrade, not a cost reduction; verify the price at your contact count before committing.
Published · By the TierGauge editorial team
When this migration makes sense
- Your business has expanded beyond pure e-commerce. You're now running content marketing, B2B nurture flows, or non-product-purchase audiences alongside the store. Mailchimp's customer-journey builder handles the broader trigger taxonomy; Omnisend's flow templates are e-commerce-shaped.
- You've hit Omnisend Pro's 2,500-contact ceiling and the only way up is the Custom contract. Mailchimp's published Standard / Premium tiers scale through 10k, 50k, and 100k+ contacts with predictable per-500-contact pricing.
- You need integrations beyond the e-commerce stack. Mailchimp connects to nearly every CMS, CRM, payment, service, and analytics tool; Omnisend's ecosystem is tighter and e-commerce-focused.
- You want multi-audience separation for distinct brands or product lines. Mailchimp's audience model (max 5 on Standard, unlimited on Premium) maps cleanly to multi-brand setups; Omnisend uses single-contact-list with tags.
- Stakeholder approval depends on a brand-name vendor. Mailchimp under Intuit has the recognition for compliance reviews and procurement processes that an independent vendor like Omnisend doesn't carry by default.
When it doesn't
- Single-channel email isn't enough; you need SMS bundled in the same tool. Mailchimp doesn't ship SMS natively. You'd add Twilio, Postscript, or Klaviyo SMS as a separate vendor and lose the unified-inbox experience.
- Pre-built e-commerce flows (cart / browse / post-purchase) are load-bearing for your revenue. Omnisend ships these as templates with Shopify product detail baked in; Mailchimp's customer-journey builder lets you build equivalent flows but the wiring is manual and the Shopify integration is shallower.
- Shopify integration depth matters: personalized product recommendations, browse-abandonment with full product detail, automated post-purchase upsell flows. Omnisend is structurally tighter to Shopify; Mailchimp is functional but feels like an external integration rather than a native one.
- You're heavily using Omnisend's web push notifications. Mailchimp doesn't have a native push channel.
- Cost is going up rather than down at your contact count. Run the math at your specific contact total before migrating; this isn't a cost-reduction migration and the feature breadth has to justify the price increase.
What you lose by leaving Omnisend
- Native SMS in the same tool. SMS becomes a separate vendor with its own auth, sender registration, and audience-segmentation overhead.
- Pre-built e-commerce flow templates (cart abandonment, browse abandonment, post-purchase upsell with Shopify product detail). Mailchimp can build equivalent flows but doesn't ship them as ready-to-use templates.
- Shopify integration depth: Omnisend's product-detail variables, automated abandonment-with-product-image, and pre-built segmentation by purchase behavior are tighter than Mailchimp's Shopify connector.
- Promotional 30%-off-3-month-upfront discount. Mailchimp's discount is a 15-20% annual-billing discount, structurally different.
- Web push notifications as a native channel.
- Free migration assistance from Omnisend's onboarding team (if you used it on the way in).
What you gain with Mailchimp
- Larger general integration ecosystem. Mailchimp connectors exist for nearly every CMS, CRM, payment processor, service tool, and analytics platform; Omnisend's ecosystem is e-commerce-focused.
- Customer-journey builder with broader trigger taxonomy beyond e-commerce events: signups, list joins, behavioral triggers, content downloads, custom events. Less rigid for non-e-commerce flows.
- Multi-audience model for distinct brands or product lines without tag-based workarounds. Cleaner separation for multi-brand setups.
- Brand-name vendor recognition for procurement and compliance reviews. Intuit ownership carries weight in B2B settings that an independent vendor doesn't.
- Multi-tier plan ladder ($13 Essentials / $20 Standard / $350 Premium) gives more granular cost control across small / mid / large contact volumes vs Omnisend's two-paid-tier shape ($16 / $59 / Custom).
- Mandrill for transactional email available as a Mailchimp add-on if you want to consolidate transactional and marketing email under one account roof. Omnisend doesn't ship a transactional product.
Plan mapping at the entry paid tier
The lowest non-free, non-custom tier on each side. Use this for the "if I'm on $X with Omnisend, what's the equivalent on Mailchimp?" gut check.
| Limit | Omnisend (Standard) | Mailchimp (Essentials) |
|---|---|---|
| Contacts | 500 contacts | 500 contacts (anchor; scales up) |
| Emails / month | 6,000 sends | 5,000 sends (10x contacts) |
| Team seats | · | 3 |
| Automations | · | 4 flow steps |
| Campaigns | · | 3 audiences |
Step-by-step migration
- 01
Export your list from Omnisend
Pull a fresh CSV of every active subscriber. Capture the fields you actually use downstream: email is required, name is standard, signup date and tier (free/paid) are useful when Omnisend provides them.
- 02
Provision Mailchimp
Sign up, set sender identity, and verify your sending domain (DKIM, SPF, DMARC). Do this before importing the list; sending from an unverified domain is the single fastest way to land in spam at the moment of cutover.
- 03
Import the list and map fields
Upload the CSV. Map email + name + any custom fields. Decide whether to import as one list or split into segments/tags. Omnisend-style organization rarely maps 1:1, so plan the split before the upload, not after.
- 04
Rebuild automations and templates
Mailchimp's automation builder is structurally similar but won't import Omnisend's flows directly. Rebuild only what you actively use; the move is a chance to delete the unused ones rather than lift-and-shift dead infrastructure.
- 05
Send a test broadcast
Pick a small segment and send a real broadcast (not just a preview). Verify deliverability, link clicks, and unsubscribe flow. If anything's off, you find it before the announcement, not after.
- 06
Announce the move and cut over
Send your last broadcast from Omnisend announcing the new sender domain and what to expect. Cut over DNS and sending from Mailchimp on the same day, not staggered. A dual-send week creates more confusion than it prevents.
Omnisend-to-Mailchimp specific gotchas
Universal steps cover most of the work. These are the failure modes unique to this exact pair.
-
#1
Single-list to multi-audience model: Omnisend uses one contact list with tags and segments. Mailchimp uses separate audiences (max 3 on Essentials, 5 on Standard, unlimited on Premium). If you have one Omnisend list, the migration is straightforward; if you've used Omnisend tags to represent what would be separate brands or product lines, plan how those map to Mailchimp audiences before importing. Each audience counts separately for billing.
-
#2
SMS channel separation: Omnisend's SMS is in-platform with credits stacking on the workspace fee. Mailchimp doesn't ship SMS. If SMS is part of your revenue mix, pick a separate SMS vendor (Twilio, Postscript, ManyChat, Klaviyo SMS) and run that migration BEFORE deactivating Omnisend, otherwise you'll have a multi-day SMS gap.
-
#3
E-commerce flow rebuild: Omnisend's pre-built cart-abandonment, browse-abandonment, and post-purchase flows are templates with Shopify product-detail variables. Mailchimp's customer-journey builder lets you build equivalent flows but you're wiring them from scratch using the e-commerce-trigger primitives. Plan a 1-2 week flow rebuild project with side-by-side testing before flipping.
-
#4
Product recommendations engine: Omnisend has personalized product recommendations on Pro; Mailchimp has them on Standard. The implementation differs (Omnisend pulls from Shopify-native product feed; Mailchimp uses its own product catalog import). Audit the existing recommendation rules and re-author them in Mailchimp; don't expect the imported product feed to drive the same recommendation behavior.
-
#5
Custom domain authentication: both use SPF and DKIM but the DNS records are vendor-specific. Add Mailchimp's records alongside Omnisend's, verify Mailchimp, and warm the new sender on a percentage of traffic for 7 to 14 days before flipping the from-address. Don't hard-cut a production sender.
-
#6
Promo-pricing alignment: Omnisend's 30%-off-3-month-upfront discount creates non-aligned billing dates. If you've prepaid for a 3-month cycle, you may have unused credit on Omnisend that doesn't refund cleanly. Plan the migration to coincide with the natural end of an Omnisend prepay cycle, or accept the residual cost.
Common questions
- Is Mailchimp cheaper than Omnisend?
- Both start at the same headline price (Free). The reason to migrate is the pricing model and feature scope, not the entry-tier number.
- Will I lose subscribers in the move?
- Email lists transfer as raw addresses; subscriber relationships transfer with you because the addresses haven't changed. What you can lose: re-engagement (some readers won't notice the new sender domain immediately), paid subscriptions if Omnisend handles billing differently from Mailchimp (the gotchas above call out the specific cases), and any "engagement" or warmth signals that Omnisend's deliverability inferred from your sending history. Plan a clear announcement and a deliverability warm-up week.
- How long does the migration take?
- For a list under 10,000 subscribers, a clean migration is one focused week: domain setup and verification, list import, automation rebuild, test broadcast, announcement, cutover. Larger lists or complex automations can stretch to 2 or 3 weeks. The constraint is rarely the import itself; it's the deliverability warm-up and the time to rebuild flows you actually depend on.
- Are Omnisend and Mailchimp direct competitors?
- Yes. Both are primarily email marketing tools, which is why this is a defensible head-to-head migration rather than a cross-category consolidation.
- Where can I see Omnisend vs Mailchimp side-by-side?
- The /compare/mailchimp-vs-omnisend page on TierGauge shows side-by-side plans, headline pricing, included features, and limit comparison at the entry paid tier. This migration guide is the long-form decision narrative; the compare page is the data-only dashboard.
Sources
- Omnisend: https://www.omnisend.com/pricing/
- Mailchimp: https://mailchimp.com/pricing/marketing/
Pricing verified . Migration mechanics are based on the public pricing pages and standard ESP migration patterns; verify destructive steps (DNS cutover, paid subscription transfer) against the vendor's current docs before executing.