Mailchimp's price scales with your list. OCCS's price scales with what you send.
Same email infrastructure tier — Postmark/Mailgun, SPF/DKIM/DMARC. The difference: OCCS bundles social, paid ads, blog, SEO, and AI generation under one brand spine. Mailchimp is email-first; OCCS is multi-channel-first.
OCCS
$0.005 per email sent. No per-contact pricing.
Mailchimp
Standard $20/mo at 500 contacts → $135/mo at 10K → $385/mo at 25K. Pay even if you don't send.
Source: mailchimp.com/pricing (checked 2026-05-07; Standard tier)
Cost to send 4 emails/month — by list size
2.5K contacts
10K contacts
25K contacts
At low send-frequency or large lists, OCCS undercuts. The break-even point is roughly 8 sends/month — past that, Mailchimp's flat tier wins on pure cost. The OCCS edge is the multi-channel + AI bundle, not just the email math.
Feature-by-feature
Honest comparison. Where Mailchimp ships the same capability we say so — the moat is in the rows where they don't.
| Feature | OCCS | Mailchimp |
|---|---|---|
| Drag-and-drop email composer | ||
| A/B subject + body tests | ||
| List segmentation | ||
| Sequences / multi-step drips | ||
| Email + SMS in one sequence | — | |
| Shopify cart-abandonment auto-trigger sequence (cancels on order) | — | |
| Per-recipient AI talking-head video at broadcast time (animated-GIF inbox preview) | — | |
| Talking-head opener spliced onto ad creatives (cross-product reuse) | — | |
| Lead scoring (engagement window + role/seniority parsing) | — | |
| Multi-channel publishing (Meta / Google / TikTok / X / LinkedIn / YouTube) | — | |
| Built-in blog studio + SEO command center | — | |
| AI brand-voice grounding from website crawl | — | |
| Sales videos (script → narration → composite) | — | |
| Ad creative generation (13 platform presets) | — | |
| Pricing by send volume, not list size | — |
Bottom line
If you only need email, Mailchimp's flat tier is fine. If you need email plus the rest of marketing — social, paid, blog, SEO, AI creative — running Mailchimp + Buffer + Hootsuite + Jasper + Semrush adds up. OCCS replaces the stack.
Common questions
Can I migrate my Mailchimp list and tags?
Does OCCS handle merge fields and personalization?
What about Mailchimp's audience / journey builder?
Ready to switch?
Free tier, no card required. Run OCCS in parallel with Mailchimp for 14 days — keep what works.