Switch Platforms.
Keep Everything.
Move your lists, flows, templates, and revenue to a better platform — without losing subscribers, breaking automations, or tanking deliverability. We handle the entire migration so you don't miss a single send.
Klaviyo · Mailchimp · HubSpot · ActiveCampaign · Constant Contact · Brevo · Drip
A bad migration doesn't just lose data — it tanks your sender reputation.
Most Migrations Are Botched
Switching email platforms should be an upgrade. Instead, most businesses lose subscribers, break automations, and spend weeks cleaning up the mess. That's because most migrations are treated as a data export — not a strategic operation.
Your Email List Is a Revenue Asset.
Your email list isn't just a collection of addresses — it's segmented audiences, behavioral data, purchase history, and years of engagement signals. A careless migration can wipe all of that context, leaving you starting over with a flat CSV and zero intelligence.
Deliverability is fragile. When you move to a new platform, you're sending from new IP addresses. If you blast your entire list on day one from an unwarmed domain, inbox providers flag you as spam. Recovery takes weeks — sometimes months — and every day in the spam folder is lost revenue.
Automations are architecture. Your welcome series, abandoned cart flows, post-purchase sequences, and re-engagement campaigns didn't build themselves. Recreating them on a new platform without a detailed audit means broken logic, missed triggers, and revenue leaks that go unnoticed until the damage is done.
We don't just move your data. We migrate your entire email program.
From Anywhere, to Anywhere
We've migrated businesses between every major email platform. We know the quirks, the export limitations, and the gotchas of each — so nothing slips through the cracks.
Klaviyo
Deep Shopify integration, predictive analytics, and revenue attribution built in. The go-to for e-commerce brands serious about lifecycle marketing. We migrate to and from Klaviyo more than any other platform.
Klaviyo services →Mailchimp
The platform most businesses start on — and eventually outgrow. We handle Mailchimp exports cleanly, preserving audience data, tags, and campaign history that Mailchimp makes notoriously hard to extract.
Mailchimp services →HubSpot
CRM-native email with powerful workflow automation. Ideal when email needs to sync with sales pipelines. Migrations involving HubSpot require careful CRM data mapping — we handle both sides.
HubSpot services →ActiveCampaign
Sophisticated automation builder with CRM and scoring. Great for businesses with complex customer journeys. Migrations to and from ActiveCampaign need careful workflow translation — logic doesn't always map 1:1.
ActiveCampaign services →Constant Contact
Straightforward email and event marketing. Many businesses are ready for more power but worry about the transition. We make Constant Contact migrations painless and preserve everything that matters.
Brevo (Sendinblue)
Affordable marketing and transactional email in one platform. Migrations from Brevo require special attention to transactional email routing and API-triggered sends that other platforms handle differently.
Every Migration Includes
This isn't a CSV upload. Every Ritner Digital migration is a full-scope transfer of your email program — the data, the logic, the design, and the deliverability infrastructure that keeps it all working.
Full List & Segment Transfer
Subscriber profiles, custom fields, tags, segments, suppression lists, and engagement history. We clean the list during transfer — removing bounces and long-dormant contacts so your new platform starts healthy.
Automation Rebuild
Every flow — welcome series, abandoned cart, post-purchase, win-back, browse abandonment — audited, documented, and rebuilt on the new platform. Not copied blindly; optimized during the move.
Template Recreation
Your email templates rebuilt to match your brand on the new platform's editor. We don't just screenshot and recreate — we improve rendering, mobile responsiveness, and dark mode support in the process.
DNS & Authentication
SPF, DKIM, DMARC, and custom sending domain configuration on the new platform. Proper authentication is the single biggest factor in deliverability — we verify everything before a single email goes out.
IP & Domain Warming
A structured sending schedule that gradually increases volume over 2–4 weeks, starting with your most engaged subscribers. This builds sender reputation with inbox providers and prevents spam folder placement.
Integration Reconnection
E-commerce platform, CRM, forms, landing pages, analytics, and any third-party tools reconnected and tested. Every data pipeline that fed your old ESP gets mapped to the new one.
Signup Form Migration
Pop-ups, embedded forms, landing page forms, and footer signups updated to point to the new platform. We audit every entry point on your site so no new subscribers fall through the cracks.
Historical Data Preservation
Campaign performance data, open/click history, and revenue attribution exported and documented. Not every platform imports historical analytics — but we make sure you have the records regardless.
Post-Migration QA
Full audit after go-live: automations firing correctly, segments populating accurately, deliverability holding steady, and integrations syncing data. We monitor for two weeks minimum before handoff.
A Migration Is a Chance to Upgrade Everything
Because we also run email strategy, SEO, and paid ads, your migration isn't just a platform swap — it's an opportunity to rebuild your email program stronger.
Audit Before You Move
Before touching a single record, we audit your current flows, segments, and performance data. We identify what's working, what's dead weight, and what's missing. You don't just migrate what you have — you migrate what you should have.
List Hygiene Built In
Migration is the best time to clean house. We scrub bounced addresses, remove long-unengaged contacts, and segment by engagement level. Your new platform starts with a clean, healthy list — not years of accumulated dead weight.
Flows Rebuilt, Not Just Copied
When we rebuild your automations, we don't just replicate the old logic — we improve it. Better timing, better segmentation, better content, and better conversion points based on what the data actually shows.
Connected to Your Full Funnel
Your email doesn't exist in isolation. We make sure the new platform connects properly to your website, your ad platforms, and your CRM — so data flows correctly and attribution stays intact across every channel.
The Cost of a Bad Migration
Email generates $42 for every $1 spent — a broken migration puts that ROI at risk
Automated email flows drive the majority of email revenue — broken automations mean broken revenue
Average time to recover sender reputation after a botched migration with no warming plan
Email lists degrade ~30% annually — migration is the right time to clean, not just transfer
From Old Platform to Go-Live
Every migration follows a structured four-phase process. You'll know exactly what's happening, what's been moved, and when it's safe to send from the new platform.
Audit & Document
We map every list, segment, automation, template, integration, and form on your current platform. Nothing moves until we have a complete inventory and a documented migration plan.
Build & Configure
New platform set up with DNS authentication, sending domains, integrations, and your rebuilt templates and automations. Everything is built and tested in staging before any data moves.
Migrate & Warm
Cleaned subscriber data transferred, segments rebuilt, and a structured IP warming schedule executed. We send to your most engaged subscribers first, gradually scaling volume to build reputation.
QA & Handoff
Full post-migration audit — automations firing, segments accurate, deliverability holding, integrations syncing. We monitor for two weeks, then train your team on the new platform and hand over documentation.
Ready to Switch Without the Stress?
Tell us where you are and where you want to be. We'll audit your current setup, map the migration, and give you a clear plan with a fixed price — no surprises, no downtime, no lost revenue.
Common Questions
No. We transfer your complete subscriber list with all custom fields, tags, and engagement data intact. The only contacts you'll "lose" are ones we intentionally remove during list cleaning — hard bounces, long-dormant addresses, and known spam traps that were hurting your deliverability anyway.
Most migrations take 3–6 weeks end to end. The platform build and data transfer itself takes 1–2 weeks; the IP warming period adds another 2–4 weeks depending on your list size. We run both platforms in parallel during the transition so you never miss a send.
Not if the migration is done properly — which is exactly why IP warming matters. We follow a structured warming plan that gradually introduces your sending volume to the new infrastructure. We also configure SPF, DKIM, and DMARC correctly and monitor deliverability metrics throughout the transition.
Absolutely. If you know your current platform isn't working but aren't sure where to go, we'll recommend the right fit based on your business model, tech stack, list size, and goals. We're platform-agnostic — we don't get kickbacks from any ESP, so our recommendation is always based on what's genuinely best for you.
Yes — we recommend keeping your old platform active during the entire migration and warming period. Running both platforms in parallel ensures no emails are missed, gives us a fallback if anything needs adjustment, and lets us verify that everything transferred correctly before you cancel the old account.
That's exactly when professional migration matters most. Complex automation logic — conditional splits, scoring, multi-step triggers, API-based events — doesn't always translate directly between platforms. We audit every flow, document the logic, and rebuild it to work natively on the new platform, often improving it in the process.