Side by side
Retarus Transactional Email vs SMTP2GO
Both stand on transactional email services. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Consider Retarus Transactional Email if your organization needs transactional messaging from business applications, API and SMTP interfaces, and the listed monitoring and security features. The main reason to look elsewhere is that the paid service requires a pricing request, while the trial has volume and throughput caps.
Visit Retarus Transactional Email
SMTP2GO combines SMTP and API delivery with event reporting, authentication and integrations. The free plan provides 1,000 emails/month, while higher-volume senders can consider paid plans from $10/mo.
Visit SMTP2GOThe facts
| Retarus Transactional Email | SMTP2GO | |
|---|---|---|
| Free plan | Not published | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Web |
| Lowest paid plan | Free or on request | Starter: $100 a year |
| Plans published | 2 | 6 |
| Maker | Retarus Transactional Email | Not published |
| Website | retarus.com | smtp2go.com |
| On transactional email services | #28 of 41 | #24 of 41 |
Retarus Transactional Email: what it does well
- Connects with SAP, Microsoft, Salesforce, and ServiceNow.
- Offers REST API and SMTP interfaces with JSON and SMTP/MIME support.
- Includes dashboards, real-time monitoring, reports, and administrator self-service.
- Provides email search with status information for the past 45 days.
- Processes data in Retarus-operated centers across four regions.
What to know first
- Pricing is available on request.
- The free trial lasts 30 days and caps use at 5,000 emails.
- Trial processing is limited to 200 emails per hour.
SMTP2GO: what it does well
- Real-time reporting includes opens, clicks and spam reports.
- Supports SPF and DKIM authentication for sender domains.
- Free plan includes 1,000 emails/month.
- Attachments can be up to 50MB per email.
What to know first
- Free-plan phone and chat support is limited to 14 days.
- Mailing lists over 100 addresses must meet opt-in and unsubscribe requirements.
- Email data is deleted after 35 days by default.
Alternatives to Retarus Transactional Email Alternatives to SMTP2GO The whole list