Mailchimp at 500K contacts is $30K/yr.
SES is $300.
Mailchimp charges per contact, including unsubscribed and inactive ones. AWS SES + Postmark charge per email actually sent. At 100K+ contacts the gap is huge — and it grows every quarter as your list does. We rebuild the campaign editor, segmentation, automation flows, and analytics on your direct billing. Same workflow your team knows. Code in your GitHub.
Mailchimp Standard · 200K contacts
Math gets dramatic at scale: at 500K contacts, Y1 reclaim crosses $35K. At 1M+, it crosses $80K.
Mailchimp's "audience-based" pricing is a charge that scales with list growth.
Mailchimp charges based on your audience size — including unsubscribed and non-subscribed contacts in your CRM. Direct billing charges per email actually sent. The gap between "people in your DB" and "emails actually delivered" is where the wrapper margin lives.
Mailchimp Standard tier prices May 2026. Direct numbers based on AWS SES at $0.10 / 1,000 emails + Postmark for transactional + a $14K Allied rebuild amortised. Cleanup of inactive contacts on Mailchimp can drop costs ~15%; on direct billing it doesn't matter.
Three layers. Same workflow your team knows.
Drag-drop template editor, segmentation builder, automation flows — your marketing team's existing patterns transfer. Behind the scenes: AWS SES + Postmark on your direct accounts, Postgres-backed audience and analytics in your VPC.
- Drag-drop template editor
- Audience / segmentation builder
- Visual automation flows (welcome, drip, win-back)
- Campaign scheduler + A/B test
- Analytics dashboard (open / click / unsubscribe)
- Multi-list / multi-brand workspace
- Source ingestion (Shopify / WordPress / Stripe / your DB)
- Postgres-backed segment evaluation
- Job queue (BullMQ / SQS)
- Bounce + complaint handling
- Suppression / unsubscribe / GDPR
- Deliverability monitoring
- AWS SES (your account) — bulk
- Postmark (your account) — transactional
- SPF / DKIM / DMARC on your domain
- Dedicated IP if you want one
- Reputation isolated from shared pools
- ~$0.10 / 1,000 emails actually sent
We rebuild the 10 features your team actually uses.
Mailchimp ships hundreds of features. Most teams use about 10. We rebuild those 10, drop the long tail, and add a few things Mailchimp's audience-based pricing actively penalises.
Fixed price. Sized by list.
One number, one ship date. Sized by list size and number of brands.
From $14,000 — fixed
- Marketing app — templates, audience, automation, analytics
- AWS SES + Postmark integration with your accounts
- Source integrations — Shopify / WordPress / Stripe / your DB
- Migration of existing Mailchimp lists + templates + flows
- SPF / DKIM / DMARC setup on your domain
- Deliverability monitoring dashboard
- Code in your GitHub from day one
- 1-week pilot on a small audience before full cutover
- 30-min handover call + written runbook
24-hour quote turnaround · NDA on request
Why we don't recommend the obvious switches.
"Mailchimp alternative" results are mostly Klaviyo, Brevo (Sendinblue), Constant Contact, ConvertKit. All wrappers over the same delivery infrastructure — same wrapper economics, just sliced differently.
"What if…"
Will my deliverability tank moving off Mailchimp's shared IP pools?▾
What about my existing audience and tags?▾
What about WordPress / Shopify / WooCommerce integrations?▾
What about transactional email (receipts, password resets)?▾
What about predictive / AI features?▾
Who owns the code?▾
Why this number works: AI-paired senior engineers raise the floor on quality + consistency · 250+ products shipped · direct vendor billing — you keep the wrapper margin. → The full method
SCOPE · WHAT WE REBUILD vs WHAT WE DON’T · MAILCHIMP
We don’t rebuild Mailchimp. We rebuild your usage of it — the 15–25% you’re paying for and actually using, on direct billing. Read the universal methodology →
- List management — your contact lists with custom fields, segments, tags, subscription preferences (rebuilt as Postgres tables you control)
- Basic automation flows — welcome series, post-purchase, abandoned browse (typically 3–6 your team has actually built)
- Template editor — drag-drop block editor for your 5–10 templates, with brand styles preserved
- A/B subject-line testing — basic 50/50 split with auto-pick winner after 2 hr
- Deliverability dashboard — opens, clicks, unsubscribes, bounces, sender reputation per domain
- AWS SES + Postmark direct — sending infrastructure on your accounts, no per-contact tax
- E-commerce integrations directory (150+ platforms) — Mailchimp’s marketplace. Our pick: rebuild your top 2–3 (typically Shopify + WooCommerce); rest stay out of scope
- Advanced segmentation with ML — Mailchimp’s proprietary scoring. We rebuild rule-based segments; for ML, in-house DS team
- Mandrill (transactional email) — specialized product. Our pick: Postmark direct (much cheaper, better deliverability) or AWS SES
- Landing pages + websites — different product. Our pick: Webflow, Framer, or Carrd direct (way better tooling)
- Social ad integration (Facebook, Instagram, Google Ads) — niche feature. Our pick: native Meta Ads Manager / Google Ads (Mailchimp’s surface is thin)
Not a rebuild case? We still help. Free 30-min advisory call to evaluate any of the alternatives above — we use them all in our practice and have no resale relationships, just opinions earned from the work. Book a call →
Stop the audience tax. Pay AWS direct.
From $14,000 fixed. 4–5 weeks to ship. Code in your GitHub. AWS SES + Postmark on your direct accounts. Your existing audiences, segments, automations carry over. No deck-pitch — send your current Mailchimp plan + contact count, we send a quote in 24 hours.
15+ years · ISO 9001:2015 · 250+ shipped · MSA · SOW · DPA ready · refundable against any larger Upstream engagement.