Comparison Overview
The 7 Best Transactional & Marketing Email Platforms (2026)
Choosing an email platform for your SaaS? We've compared the 7 most popular options based on features, pricing, support, and real-world experience. Here's what you need to know.
Compare Sidemail with your current provider
Sidemail vs SendGrid
SendGrid is one of the oldest email platforms, but its pricing is split across separate products and support and reliability have become a common complaint. Sidemail keeps everything in one plan with included support, reliable email delivery, 90‑day email history.
View Sidemail vs SendGridSidemail vs Mailgun
Mailgun is solid for API‑first delivery, but marketing requires a separate Mailjet account and the workflow gets fragmented fast. Sidemail keeps everything in one place, so transactional, newsletters, and automation are easier to manage.
View Sidemail vs MailgunSidemail vs Postmark
Postmark is good for transactional email, but it stops there. Sidemail keeps the simplicity while also adding marketing campaigns, automation, a visual editor, and contact management in the same product.
View Sidemail vs PostmarkSidemail vs Amazon SES
Amazon SES is extremely cheap and flexible, but it is mostly raw infrastructure with no real product layer. Sidemail costs more, but you get templates, analytics, human support, and a much faster setup.
View Sidemail vs Amazon SESSidemail vs Mandrill
Mandrill works best for teams already committed to Mailchimp, but it is awkward and expensive if you just want transactional email. Sidemail is reliable, simpler to manage, and has all for transactional and marketing emails in one plan.
View Sidemail vs MandrillSidemail vs Brevo
Brevo is a broad marketing platform where transactional email feels secondary, while Sidemail is built with transactional delivery as a core use case. If your product depends on reliable app emails, Sidemail is usually the cleaner fit.
View Sidemail vs BrevoEmail Platforms Comparison Table
A side‑by‑side look at features, pricing, and capabilities across all major email platforms.
| Sidemail | SendGrid | Mailgun | Postmark | Amazon SES | Mandrill | Brevo | |
| Best for | Product teams wanting simplicity | Large enterprises | API‑focused developers | Transactional‑only needs | High‑volume, DIY teams | Mailchimp users | Marketing‑first teams |
| Transactional emails | Separate pricing | ||||||
| Marketing emails | Separate pricing | Separate service (Mailjet) | Very limited | ||||
| Email automation | Separate pricing | Separate service (Mailjet) | |||||
| Visual editor | |||||||
| Premade templates | Only for marketing | Only for marketing | |||||
| Contacts | Unlimited | Limited, depends on tier | Unlimited | – | – | Limited, depends on tier | Unlimited |
| Team members | Unlimited | 1 (1,000 on Pro at $89.95/mo) | Unlimited (10 on Mailjet) | Unlimited | Unlimited | Limited (unlimited on Premium at $350/mo) | Limited |
| Data history | 90 days | 3 days (7 on Pro) | 1 day (7 on Scale at $90) | 45 days | 0 | 30 days | – |
| Ease of setup | Fast (<30 min) | Moderate | Moderate | Fast | Complex | Moderate | Moderate |
| Support | Included in all plans | Paid add‑on | Tiered | Included in all plans | Paid add‑on | Included (except free plan) | Limited on lower tiers |
| Starting price | $19/mo | $19.95/mo | $35/mo | $15/mo | $0.10/1k | $20/mo + Mailchimp | $18/mo |
| Based in | 🇪🇺 EU | 🇺🇸 US | 🇺🇸 US | 🇺🇸 US | 🇺🇸 US | 🇺🇸 US | 🇪🇺 EU |
Frequently Asked Questions
What's the best email platform for SaaS?
Sidemail is the top pick for SaaS teams. It combines transactional, marketing, and automation in one simple plan with excellent support and 90‑day email history. It's designed specifically for SaaS use cases.
What's the cheapest email platform?
Amazon SES is cheapest per email ($0.10/1k), but it's completely DIY with no features or support. For a managed solution, Brevo starts at $9/mo, though transactional is secondary to marketing. Sidemail at $19/mo offers the best value for all‑in‑one capabilities.
Which platform has the best deliverability?
Postmark and Sidemail are known for excellent transactional deliverability. Both maintain strict sending policies that keep IP reputations clean. SendGrid and Mailgun are also solid, though deliverability can vary by account and volume.
Which platforms offer all‑in‑one email?
Sidemail and Brevo offer true all‑in‑one (transactional + marketing + automation in one plan). SendGrid and Mailgun require separate plans or services for marketing. Postmark and Amazon SES are transactional-only.
What's the difference between transactional and marketing email?
Transactional emails are triggered by user actions: password resets, order confirmations, notifications. They're one-to-one. Marketing emails are one-to-many campaigns: newsletters, promotions, product updates. Most SaaS apps need both.