Odoo vs Postmark Comparison
Compare Odoo vs Postmark features, pricing, and more.
Last updated: November 2026
Odoo
7.2/10
Odoo is an open-source business suite whose CRM app handles leads, pipelines, calling, and reporting for small and mid-sized companies, with ERP modules available alongside it.
Postmark
6.1/10
Postmark is an email delivery API and SMTP service, owned by ActiveCampaign, that sends transactional and broadcast email for software products and web apps.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 7.2/10 | 6.1/10 |
| Analytics | 7/10 | 6/10 |
| Cost | 8/10 | 6/10 |
| Customization | 9/10 | 5/10 |
| Ease of Use | 5/10 | 7/10 |
| Integration | 8/10 | 6/10 |
| Scalability | 7/10 | 7/10 |
| Security | 7/10 | 6/10 |
| Support | 5/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | €31/user/mo Standard | $15/mo Basic |
| Estimated cost for 10 users | Free One App Free | Free Free |
| Features | ||
| A/B Testing | Not listed | |
| Email Marketing | Not listed | |
| Landing Pages | Not listed | |
| Segmentation | Not listed | |
| SMS Marketing | Not listed | |
| Webinars | Not listed | |
| More features | ||
| Marketing Automation | Not listed | |
| Built-in Calling | Not listed | |
| Collaboration | Not listed | |
| Customer Support Management | Not listed | |
| Lead Management | Not listed | |
| Integrations | Not listed | |
| Sales Automation | Not listed | |
| Opportunity Management | Not listed | |
| Contact Management | Not listed | |
| Reporting & Analytics | Not listed | |
| Mobile Access | Not listed | |
Odoo vs Postmark cost by team size
| Team size | Odoo | Postmark |
|---|---|---|
| 1 user | FreeOne App Free | FreeFree |
| 5 users | FreeOne App Free | FreeFree |
| 10 users | FreeOne App Free | FreeFree |
| 25 users | FreeOne App Free | FreeFree |
| 50 users | FreeOne App Free | FreeFree |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Odoo
- Higher Customization score (9/10 vs 5/10)
- Higher Cost score (8/10 vs 6/10)
- Better fit for marketing teams (6/10 vs 2/10)
- Better fit for small business (8/10 vs 6/10)
Why choose Postmark
- Higher Ease of Use score (7/10 vs 5/10)
- Higher Support score (6/10 vs 5/10)
- Better fit for developers (9/10 vs 6/10)
- Better fit for startups (9/10 vs 7/10)
Pros & Cons
Odoo
Pros
- The free plan gives unlimited users on a single app, so a team can run the CRM at no license cost.
- CRM data flows natively into Odoo's Sales, Inventory, Invoicing, and Email Marketing apps, so quotes and stock checks happen without third-party connectors.
- Lead tools go beyond the basics, with predictive scoring, quota-based assignment, deduplication, and enrichment.
- It is open source and highly customizable through Studio, the API, or self-hosting.
Cons
- Reviewers often describe the interface and workflows as complex for new users.
- Setup usually needs internal staff or a paid implementation partner.
- Some users report slow performance with large datasets.
- Opinions on support and documentation quality are mixed, and paid support is email-only on weekdays.
Postmark
Pros
- Separate transactional and broadcast streams run on separate IPs, which protects deliverability for critical app email.
- A free plan of 100 emails a month never expires, so developers can test the integration at no cost.
- Clear volume pricing with no fees for broadcast messages; the Platform plan adds unlimited domains, users and servers for $18 a month.
- Offers both a REST API and SMTP, plus inbound email processing on the Pro plan and above.
- Many Capterra reviewers praise its speed and deliverability, with a 4.7 rating.
Cons
- Not a marketing platform: it has no list uploads, visual editor or campaign reporting.
- Billed monthly only, with no PayPal or purchase order payments.
- Some reviewers report slow support and accounts paused during approval reviews since the ActiveCampaign acquisition.
- Per-email costs are higher than bulk services such as Amazon SES at high volumes.
- Nothing sits between the 100-email free plan and the 10,000-email paid plans.
Not sold on either?
Frequently Asked Questions
Odoo scores higher on our Marketing criteria: 7.2/10 against 6.1/10 for Postmark. The largest gap is in Customization: 9/10 for Odoo and 5/10 for Postmark.
Yes, both Odoo and Postmark have a free plan.
Odoo is the better fit for marketing teams: we rate it 6/10 for them, against 2/10 for Postmark.
