MailerSend vs OneSignal Email

Two transactional email providers, compared on price, features and ratings, so you can pick fast.

MailerSend wins developer experience and sending APIsOneSignal Email wins compliance and analytics

Updated July 2026

At a glanceMailerSendOneSignal Email
Entry price$7Free
Cost per 1k @ 100k$1.39
Free tier500/mo10,000/mo
G2 rating4.14.7

THE VERDICT

MailerSend wins on developer experience and sending APIs. OneSignal Email wins on compliance and analytics.

MailerSend starts at $7 versus OneSignal Email's Free. OneSignal Email rates higher with developers (4.7 vs 4.1 on G2). Pick based on volume and team, and the scorecard below breaks down where each one leads.

Which should you choose?

Pick MailerSend

Teams that need EU-hosted transactional email data by default for compliance or customer-trust reasons
Budget-conscious developers who want a real free tier plus a cheap ($7/mo) entry-level paid plan
Teams that want built-in email address verification without adding a separate vendor
Apps that need inbound email parsing (support tickets, reply-by-email flows) alongside outbound sending

Pick OneSignal Email

You already use OneSignal for push or in-app and want to add email from the same dashboard
You want a free tier to start sending marketing or transactional email
You need to manage subscribers across push, in-app, and email in one place
You want a simple setup rather than a dedicated deliverability or template platform

Feature by feature

Winner cells are tinted, green where MailerSend leads, violet where OneSignal Email does.

capability
MailerSend
OneSignal Email
Starting paid plan
$7/mo
$19/mo
Cost per 1k @ 100k
$1.39
Pricing model
Hybrid
Hybrid
Overage
$1.50 per 1,000 emails beyond the plan's included allowance
$1.50 / 1,000 sends
Dedicated IP
Plan-gated
Plan-gated
Deliverability tooling
Yes
Yes
Automated IP warmup
Yes
Yes
Suppression management
Yes
Yes
SPF / DKIM / DMARC
Yes
Yes
Transactional API
Yes
Yes
Marketing campaigns
No
Yes
SMTP relay
Yes
Inbound routing
Yes
Dynamic templates
Yes
Yes
Batch send
Yes
Yes
Scheduled send
Yes
Yes
Official SDKs
PHP, Laravel, Node.js, Go, Python, Ruby, Java
Node.js, Python, Java, Go, PHP, Ruby, C#, Rust
Event webhooks
Yes
Yes
Drag-and-drop editor
Yes
Yes
Custom HTML editor
Yes
Yes
Email validation
Yes
Log retention
Plan-gated: 1 day (Free/Hobby), 7 days (Starter), 30 days (Professional)
Sandbox / test mode
Yes
Open / click tracking
Yes
Yes
Analytics dashboard
Yes
Yes
A/B testing
Plan-gated
Yes
EU data residency
Yes
SOC 2
No
Yes
HIPAA
No
BAA
GDPR
Yes
Yes
ISO 27001
Yes
Support channels
Limited support on Free; 24/7 email support from Hobby; live chat plus priority support on Starter and Professional; dedicated account manager on Professional
Email, Community
24/7 support
Yes
Yes
Support SLA
Plan-gated
Migration assistance
Plan-gated

FAQ

Common questions

MailerSend starts at $7 versus OneSignal Email's Free. Because pricing models differ by tier, the cheaper option depends on your monthly volume, so compare the pricing rows in the scorecard above.

Why not both?

Use both behind one API.

Route MailerSend, OneSignal Email, or both, and switch providers without changing your code. Courier sits in front of every channel.

Pricing, plans and feature availability as of July 2026 and may change. Ratings are aggregated from public review platforms.