Quick summary
Postmark is an email delivery service built for transactional messages. It sends receipts, password resets, and alerts from your application, and it is known for fast delivery and a clean sending API. It offers a broadcast product for marketing sends, but its core focus is transactional mail.
Ternloop is a newsletter and campaign tool. You write campaigns in a dashboard, import contacts, group them, and send or schedule the message. It focuses on newsletters and campaigns. Pricing follows the number of emails you send each month.
If your product needs reliable application email, Postmark is designed for that job. If you want to write and send a newsletter from a dashboard, Ternloop is the simpler fit.
Pricing compare
The comparison page we reviewed lists Postmark at $10 a month for 10,000 emails, $50 a month for 50,000 emails, and $100 a month for 125,000 emails. Postmark also offers a free tier with 100 emails a month. Pricing changes over time, so check Postmark's current plans before you commit.
Ternloop's plans are shown below.
| Ternloop plan | Monthly price | Annual price | Emails per month | Contacts |
|---|---|---|---|---|
| Free | $0 | $0 | 1,000 | 500 |
| Pro 5,000 | $4 | $46 per year | 5,000 | 3,000 |
| Pro 10,000 | $8 | $92 per year | 10,000 | 6,000 |
| Pro 20,000 | $15 | $172 per year | 20,000 | 12,000 |
| Pro 50,000 | $25 | $286 per year | 50,000 | 30,000 |
| Pro 100,000 | $50 | $570 per year | 100,000 | 50,000 |
| Pro 150,000 | $70 | $810 per year | 150,000 | 80,000 |
At 10,000 emails a month, Ternloop's Pro 10,000 tier costs $8 a month and includes a 6,000 contact limit. Postmark's plan at 10,000 emails lists $10 a month in the comparison we reviewed. The two prices are close at this volume, but they measure different things. Postmark's price is for sending from code, and Ternloop's price includes contact storage and campaign tools.
The free tiers also differ. Postmark's free tier allows 100 emails a month. Ternloop's free plan allows 1,000 emails and 500 contacts a month, with the campaign editor included.
Feature compare
| Feature | Ternloop | Postmark |
|---|---|---|
| Newsletter editor | Rich editor and block editor | Broadcast product |
| Contact management | Groups, custom fields, and CSV import on Pro | Message streams and broadcast lists |
| Open and click tracking | Included on every plan | Included |
| Scheduling | Included on Pro | Limited to the broadcast product |
| Custom sending domain | Included on Pro | Included |
| Bounce and unsubscribe handling | Automatic, based on SES webhooks | Included |
Postmark is built for product teams. Its transactional streams keep application mail separate from marketing mail, and its API is easy to connect to an app. Teams that send receipts and alerts will value that focus.
Ternloop is built for writers and marketers who send campaigns. The editor, contact groups, CSV import, and scheduling are designed for the newsletter workflow. Bounces and unsubscribes are marked automatically through SES webhooks, which keeps inactive contacts out of future sends.
When to choose Ternloop
- You send newsletters, product updates, or announcements to a list.
- You want a campaign editor and contact tools without writing code.
- You want a plan priced by monthly volume, with a clear contact limit.
- You want scheduling and custom sending domains on one plan.
When to choose Postmark
- Your application sends transactional email such as receipts and alerts.
- Your developers want a clean API and fast delivery for application mail.
- You want transactional and broadcast mail kept in separate streams.
- You are comfortable building your own campaign workflow or using Postmark's broadcast product.
Many teams send application email through Postmark and their newsletter through a campaign tool. Pick the tool that matches the work. For application mail, Postmark is the right choice. For a newsletter, Ternloop keeps the process simpler.
Start with Ternloop
Start on the free plan with 1,000 emails and 500 contacts each month. Import a small list, send a test campaign, and review the open and click data. When your list grows, the Pro tiers scale with your volume. See the full breakdown on the pricing page.
Questions to ask before you switch
Start with the messages you send. Postmark is built for transactional email, such as receipts, password resets, and alerts, where delivery speed and reliability matter most. If those messages are your main use case, keep Postmark for them. Ternloop is built for campaigns and newsletters that you write and schedule.
Next, compare costs at your volume. The comparison we reviewed lists Postmark at $10 a month for 10,000 emails, $50 a month for 50,000 emails, and $100 a month for 125,000 emails. Ternloop's 10,000 email tier is $8 a month, and its 50,000 email tier is $25 a month. Postmark's free plan covers 100 emails a month. Check its current pricing before you decide.
Then decide who will use the tool. Postmark is designed for developers who connect an API to an application. Ternloop is designed for a founder or marketer who writes a campaign, picks a list, and sends it from a dashboard.
Finally, plan a test. Send a campaign to a small group and check the reports. Confirm that unsubscribes and bounces update your list before you move the full audience.
Keep reading
- Ternloop vs Resend compares Ternloop with an email API built for developers.
- Ternloop vs SendGrid covers a larger sending platform.
- Ternloop vs Mailgun looks at another email API for developers.
- About Ternloop explains the founder's pricing approach.
- Contact the founder with questions about your sending setup.