Omnisend vs Postmark
Side-by-side plans, pricing, and feature gates for Omnisend and Postmark, verified . Omnisend is primarily email marketing; Postmark is primarily transactional email.
Plans side by side
Every published plan from each vendor, with the headline monthly anchor price. Some prices scale with subscriber count or seats; full detail lives on each tool's page.
Omnisend
- Free
Up to 250 contacts, 500 sends/month
Free - Standard
Entry paid tier with advanced reporting
$16/mo - Pro
Unlimited email plus SMS credits equal to plan price
$59/mo - Custom
High-volume contacts with dedicated onboarding
Custom
Postmark
- Free
100 emails per month, no credit card required
Free - Basic
Entry paid tier with 10,000 emails/month and 5 custom domains
$15/mo - Pro
10,000 emails/month with inbound processing and customizable retention
$16.50/mo - Platform
Unlimited domains and users with the lowest overage rate
$18/mo - High-Volume
Custom pricing for volumes above standard tiers
Custom
Limits at the entry paid tier
Compares Standard (Omnisend) against Basic (Postmark). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Omnisend | Postmark |
|---|---|---|
| Contacts | 500 contacts | · |
| Emails / month | 6,000 sends | 10,000 |
When Omnisend wins
- Small-to-mid Shopify or BigCommerce stores wanting one tool for email, SMS, and push
- E-commerce founders running their own marketing without a dedicated team
- Brands graduating from Mailchimp's e-commerce features
Where Omnisend is the wrong fit
- B2B marketers (use ActiveCampaign or Customer.io)
- Creators running pure newsletters (use Kit or beehiiv)
- Large e-commerce operations needing custom data modeling (Klaviyo or Customer.io)
When Postmark wins
- SaaS apps prioritizing receipt and notification deliverability
- Teams that need detailed inbound email parsing alongside outbound sends
- Companies that need 365-day data retention for compliance
Where Postmark is the wrong fit
- Hobby projects with bursty traffic (Mailgun's 100/day or Resend's 3,000/month are friendlier than the 100/month Free cap)
- Marketing teams (use Mailchimp or Kit)
- Buyers who want a single vendor for marketing and transactional email
Common questions
- Is Omnisend cheaper than Postmark?
- Both Omnisend and Postmark have free or custom entry pricing, so a direct entry-tier price comparison is not meaningful.
- Does Omnisend or Postmark have a free plan?
- Both have free plans. Omnisend: Up to 250 contacts, 500 sends/month. Postmark: 100 emails per month, no credit card required.
- Are Omnisend and Postmark in the same category?
- No. Omnisend is primarily a email marketing tool; Postmark is primarily a transactional email tool. They overlap on use case but sit in different primary categories, so the comparison is between adjacent tools rather than direct competitors.
- Which has more plans, Omnisend or Postmark?
- Postmark ships 5 plans; Omnisend ships 4. Postmark's longer ladder gives more granular upgrade steps, which can mean smoother price escalation as your team scales.
- Where can I see alternatives to Omnisend or Postmark?
- Each tool has a dedicated alternatives page on TierGauge with ranked options and verified pricing: /alternatives/omnisend for Omnisend and /alternatives/postmark for Postmark. Alternatives are derived from each tool's editor-flagged competitors plus same-category tools we track.
Omnisend: https://www.omnisend.com/pricing/ · Postmark: https://postmarkapp.com/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.