Best Postmark Alternatives (2026)
Postmark is great for transactional emails, but what if you need marketing campaigns too? Or a visual editor? Here are the best alternatives for SaaS teams that need more flexibility.
Top Postmark alternatives ranked
Sidemail
All‑in‑one email platform built for SaaS. Keeps Postmark's simplicity while adding marketing, automation, and a visual editor.
👍 Pros
- Marketing emails and automation included
- Visual email editor with premade templates
- 90‑day email history (vs Postmark's 45)
- Support on weekends too (not just weekdays)
- Markdown email support (best for AI)
- Setup in under 30 minutes
👎 Cons
- Smaller company than Wildbit/ActiveCampaign
- Transactional‑only pricing starts slightly higher
Mailgun (+ Mailjet)
API‑first transactional email with marketing available through Mailjet.
👍 Pros
- Strong API documentation
- Marketing available via Mailjet
- Good for high volumes
👎 Cons
- Marketing requires separate Mailjet account
- Only 1‑7 days email history
- No visual editor for transactional
SendGrid
Large platform with both transactional and marketing capabilities, though as separate products.
👍 Pros
- Marketing campaigns available
- Large, established platform
- Visual editor included
👎 Cons
- Separate pricing for marketing features
- Support quality issues since Twilio acquisition
- Only 3‑7 days email history
Amazon SES
Cheapest option for transactional-only, but completely DIY with no features.
👍 Pros
- Extremely low cost
- Scales to any volume
- AWS integration
👎 Cons
- No marketing, no automation, no templates
- No support included
- Complex setup and configuration
Mailchimp (+ Mandrill)
Marketing‑first platform with Mandrill as a paid transactional add‑on.
👍 Pros
- Advanced email marketing features
- Landing page builder included
- Solid free plan for email marketing
👎 Cons
- Most expensive option on this list
- Transactional email requires a Mandrill add‑on
- Previous data breach incidents reported
Postmark vs alternatives – detailed comparison
| Postmark | Sidemail | Mailgun (+ Mailjet) | SendGrid | Amazon SES | Mailchimp (+ Mandrill) | |
| Rank | - | #1 | #2 | #3 | #4 | #5 |
| Best for | Transactional‑only needs | Teams needing more than transactional | API‑focused developers | Large enterprises | High‑volume, DIY teams | Teams prioritizing advanced marketing over transactional |
| Transactional emails | Separate pricing | |||||
| Marketing emails | Very limited | Separate service | Separate pricing | |||
| Email automation | Separate service | Separate pricing | ||||
| Contact profiles management | Yes (with Marketing plan) | |||||
| Visual editor | ||||||
| Premade templates | Only for marketing emails | Only for marketing emails | ||||
| Contacts | – | Unlimited | Unlimited | Limited, depends on tier | – | Limited, depends on tier |
| Team members | Unlimited | Unlimited | Unlimited (10 on Mailjet) | 1 (1,000 on Pro at $89.95/mo) | Unlimited | Limited (unlimited on Premium at $350/mo) |
| Data history | 45 days | 90 days | 1 day (7 on Scale at $90) | 3 days (7 on Pro at $89.95) | 0 | 30 days |
| Ease of setup | Fast | Fast (<30 min) | Moderate | Moderate | Complex | - |
| Support | Included in all plans | Included in all plans | Tiered on Mailgun and Mailjet | Personalized support is a paid add‑on | Offered as paid add‑on | Included in all plans except free |
| Starting price | $15/mo | $19/mo | $35/mo | $19.95/mo | $0.10/1k | $20/mo + Mailchimp |
| Based in | 🇺🇸 US | 🇪🇺 EU | 🇺🇸 US (Mailgun), 🇪🇺 EU (Mailjet) | 🇺🇸 US | 🇺🇸 US | 🇺🇸 US |
Why people look for Postmark alternatives
📧 No marketing emails or automation
Postmark only does transactional email. If your SaaS needs to send newsletters, product updates, or automated drip campaigns, you'll need a second service – which means a second bill, second dashboard, and twice the complexity.
🎨 No visual email editor
Postmark expects you to code your own HTML templates. There's no drag‑and‑drop editor, which means non-technical team members can't easily create or update emails without developer help.
📅 Support only on weekdays
Postmark's support team works Monday through Friday. If you hit a critical deliverability issue on Saturday, you're waiting until Monday for help.
Best Postmark alternatives FAQ
What's the best Postmark alternative?
If you need marketing and automation alongside transactional, Sidemail is the best choice – it keeps Postmark's simplicity while adding the features Postmark lacks. If you're happy with transactional-only and want the cheapest option, Amazon SES works (but with no support or features).
Is Sidemail better than Postmark?
It depends on your needs. Sidemail does everything Postmark does (transactional email with good deliverability) plus marketing campaigns, automation, a visual editor, and weekend support. If you only need transactional and want the absolute cheapest tier, Postmark starts at $15/mo vs Sidemail's $19/mo.
How hard is it to switch from Postmark?
Very easy. Both Postmark and Sidemail focus on simplicity, so migration is straightforward: update DNS, recreate templates (or use Sidemail's premade ones), and update API calls. Most teams migrate in a few hours.
Want more details?
Read our in-depth Postmark alternatives article with full pricing comparisons and feature analysis.