Constant Contact charges by your list. OCCS charges by what you send.
Both ship the table-stakes SMB email kit: drag-and-drop composer, list segmentation, A/B tests, automation. The difference is bill shape — and what else you get for the same dollar.
OCCS
$0 from OCCS per email — you bring your own Postmark (free up to 3K/mo, $15/mo for 10K) or any SMTP. Bundles social + SMS + blog + sales videos + AI in every plan.
Constant Contact
Lite $12/mo (500 contacts) → Standard $35/mo (500) → Premium $80/mo (500). Past 500 contacts each tier scales upward; you pay whether you send or not.
Source: constantcontact.com/pricing (checked 2026-05-07) · postmark.com/pricing (checked 2026-05-21)
Monthly cost — by send volume
1K emails/mo
OCCS saves 100%
10K emails/mo
OCCS saves 89%
100K emails/mo
OCCS saves 86%
Assumes one send per month (10K emails/mo → 10K-contact list). Constant Contact has no free tier — Standard tier scales with list size. OCCS adds $0/email; the cyan series is Postmark's BYO pricing (free tier covers 1K/mo here).
Feature-by-feature
Honest comparison. Where Constant Contact ships the same capability we say so — the moat is in the rows where they don't.
| Feature | OCCS | Constant Contact |
|---|---|---|
| Drag-and-drop email composer + templates | ||
| List segmentation | ||
| A/B subject + body tests | ||
| Marketing automation | ||
| Surveys + signup forms | ||
| Phone support (real human) | — | |
| Pricing by send volume, not list size | — | |
| Multi-channel publishing (Meta/Google/TikTok/X/LinkedIn/YouTube) | — | |
| AI brand-voice grounding from website crawl | — | |
| Sales videos + creative + blog studio bundled | — | |
| Per-recipient AI talking-head video at broadcast time | — | |
| Sequences mix email + SMS in one flow | — | |
| Shopify cart-abandonment auto-trigger | — |
Bottom line
Constant Contact is fine if you only need email + you value phone support. If you need email plus the rest of marketing, you're stacking 5 tools at $400+/mo to match what OCCS bundles into Starter at $49.
Common questions
Does OCCS offer phone support?
What about transactional emails (receipts, password resets)?
Can I run my Constant Contact list in OCCS without re-confirming subscribers?
Ready to switch?
Free tier, no card required. Run OCCS in parallel with Constant Contact for 14 days — keep what works.