12 best OneSignal Email alternatives & competitors
The top OneSignal Email alternatives for transactional email, compared on price, free tier, ratings and what each is best for, with OneSignal Email pinned so you can measure each option against it.
Updated October 2026
About OneSignal Email
OneSignal Email
EmailOneSignal Email offers a generous free tier of 10,000 emails a month within its multichannel platform, so push, email, SMS, and in-app run together. The catch is email is secondary to its core push product and less mature than specialists.
teams already on OneSignal for push wanting a generous free email tier in the same platform
- Starting price
- $19/mo
- Free tier
- 10,000/mo
- Rating
- 4.7 / 5
- HIPAA
- Yes
Company profile
- Founded
- 2014
- Headquarters
- San Mateo, USA
- Funding
- $84.3M raised
- Team size
- ~170
- Ownership
- Independent, venture-backed
- Reviews
- 4.7 / 5 on G2 (1176)
Compliance
Official SDKs
Side by side
OneSignal Email vs the alternatives
Sorted by rating · figures as of October 2026
OneSignal Email
You're viewing
Starting price
$19/mo
Free tier
10,000/mo
Rating
4.7
Starting price
$100/mo
Free tier
No
Rating
4.4
Starting price
$7/mo
Free tier
500/mo
Rating
4.1
| Provider | Starting price | Free tier | Rating | |
|---|---|---|---|---|
OneSignal Email You're viewing | $19/mo | 10,000/mo | 4.7 | |
| $20/mo | 3,000/mo | 4.8 | Compare → | |
| $15/mo | 100/mo | 4.6 | Compare → | |
| $9/mo | 300/day | 4.5 | Compare → | |
| $49/mo | 4,000/mo | 4.5 | Compare → | |
| $100/mo | No | 4.4 | Compare → | |
| Usage-based | 3,000/mo (1st yr) | 4.3 | Compare → | |
| $15/mo | 100/day | 4.2 | Compare → | |
| $20/mo | No | 4.2 | Compare → | |
| $7/mo | 500/mo | 4.1 | Compare → | |
| $19.95/mo | Trial | 4.0 | Compare → | |
| $15/mo | 1,000/mo | 4.0 | Compare → | |
| $9/mo | 6,000/mo | 4.0 | Compare → |
At a glance
What each OneSignal Email alternative is best for
- Resend
4.8 / 5
- Resend is a developer-first email API for React and Next.js teams. The catch is no HIPAA BAA, US-only data storage, and reports of abrupt account suspensions.
- Postmark
4.6 / 5
- Postmark is a transactional email service with strong deliverability and streams that isolate message types. The catch is no marketing focus, no HIPAA BAA, and US-only data storage.
- Brevo
4.5 / 5
- Brevo is a GDPR-first, EU-based platform bundling email, SMS, WhatsApp, and CRM. The catch is it is not a purpose-built transactional provider, with strict anti-abuse suspensions.
- Loops
4.5 / 5
- Loops bundles marketing, lifecycle, and transactional email for SaaS teams with automated deliverability setup. The catch is a young company with no SOC 2, HIPAA, or EU data residency.
- Customer.io
4.4 / 5
- Customer.io is a lifecycle messaging platform with deep behavioral segmentation and a visual workflow builder. The catch is a steep learning curve and profile-based pricing that climbs with your audience.
- AWS SES
4.3 / 5
- Amazon SES sends high-volume email through AWS at among the lowest costs at scale. The catch is a bare-bones service with no template editor, campaign UI, or analytics.
- Mailgun
4.2 / 5
- Mailgun is a developer email API with strong deliverability and validation tooling and an EU region. The catch is inconsistent deliverability and support quality across reviews.
- Mandrill
4.2 / 5
- Mandrill is a transactional email add-on tightly integrated with the Mailchimp ecosystem. The catch is it requires a paid Mailchimp plan and will not sign a BAA.
- MailerSend
4.1 / 5
- MailerSend is a developer-focused transactional email and SMS API from the MailerLite team, with EU-hosted data by default, a real free tier, and built-in email verification. The catch is no formal SOC 2 Type II or HIPAA, and reports of accounts suspended over bounce-rate triggers.
- SendGrid
4.0 / 5
- SendGrid is a high-volume email API with dedicated IPs, deliverability tooling, and detailed analytics. The catch is support: slow responses and occasional account suspensions, reflected in a low Trustpilot score.
- SparkPost
4.0 / 5
- SparkPost (now Bird) is a high-volume email API with strong deliverability and analytics. The catch is no HIPAA BAA and poor reviews since the 2023 Bird rebrand.
- Mailjet
4.0 / 5
- Mailjet is a GDPR-certified email service with EU data storage and a drag-and-drop editor. The catch is a 200-per-day free cap and reports of inconsistent deliverability.
FAQ
Common questions
The strongest OneSignal Email alternatives depend on what you need. Resend rates highest among the options here; the comparison table covers price, free tier, and rating, and the "what each alternative is best for" section matches each option to a use case.
Yes. Several alternatives offer an ongoing free tier, including Resend. Check the "Free tier" column above; free allowances and limits vary by provider, and some offers are trials rather than perpetual free tiers.
OneSignal handles both transactional and marketing email as one channel within its broader customer engagement platform, which also covers push, SMS, and in-app messaging. It is primarily known as a push notification tool, with email added as an additional channel. Teams often use it for marketing and lifecycle messaging rather than as a dedicated transactional email service.
Yes. OneSignal is HIPAA compliant and offers a Business Associate Agreement (BAA), but the BAA is available only to Enterprise Plan customers. Teams handling protected health information need to contact OneSignal sales to arrange it.
OneSignal's paid Growth plan starts at $19 per month and includes 20,000 free email sends per month, with additional email billed at $1.50 per 1,000 sends. Pricing applies to the overall platform rather than email alone, and higher volumes and features move to Professional and Enterprise plans. There is no email-only pricing tier.
Yes. OneSignal offers EU data residency, serving EMEA customers from data centers in the Netherlands (Google Cloud europe-west4). It is GDPR compliant, and EU or APAC data hosting may involve additional fees for customers with specific residency requirements.
Often, yes. Courier sits in front of these providers behind one API, so you can route through OneSignal Email or an alternative, or fail over between them, without rewriting your integration each time.
Keep exploring
More transactional email alternatives guides
One API, every provider
Switch or combine providers without rewrites.
Courier sits in front of OneSignal Email and every alternative above: route, fail over, and swap providers behind a single API.
Company facts, pricing and compliance were verified against each provider's public pricing and security or trust pages, plus G2 and Trustpilot, as of October 2026, and compiled by the Courier team. Details change often, so confirm with the provider before you buy.