Doppler Transactional
Doppler Transactional: A flexible relay for high-volume email, especially FTP-based batch workflows. Ranked #11 of 26 in SMTP Relay Services by our editors (7.4/10); pricing: 30-day trial; best for high-volume senders needing FTP batch delivery.
At a glance
- Editor score7.4 / 10
- Pricing30-day trial
- Best forHigh-volume senders needing FTP batch delivery
- Free planNo
- Paid from$30/mo
- Monthly send limit50000 emails/mo
- Facts checked21 Sep 2026
Where it wins
- Supports SMTP, REST API, and FTP batch delivery with CSV processing
- Includes templates, delivery reports, tracking, and bounce reporting
- Offers DKIM, SPF, DMARC, shared IPs, and dedicated IPs
Where it doesn't
- There is no permanent free plan
- Dedicated IPs begin with the 250k plan
- The trial allows up to 400 emails per day
Our verdict on Doppler Transactional
Doppler Transactional, also branded Doppler Relay, is a paid transactional email service for ecommerce businesses, web applications, websites, and other online businesses. It handles automated messages such as purchase confirmations, account notifications, password resets, and emails with attachments. Delivery is available through SMTP, a REST API, or FTP batch sending with CSV processing, making it suitable for teams that need both application-triggered messages and scheduled file-based delivery.
Pricing is organized by monthly email volume. The 50k plan costs $30 per month and includes API and SMTP. The 100k plan costs $58 per month with the same connection options. At 250k for $204 per month, dedicated IP access is added, and it remains part of the 500k plan at $322 per month and the 1M plan at $541 per month. The published offer also includes a 30-day trial, with up to 400 emails per day and no credit card. There is no permanent free plan, so ongoing use starts with a paid tier.
Its strongest fit is a sender that values delivery-channel choice and operational reporting. Transactional templates support custom fields, while reports cover deliveries, opens, clicks, and bounces. DKIM, SPF, and DMARC authentication support domain configuration, and shared or dedicated IP options provide a choice of sending arrangements. Test mode can simulate bounces, unsubscribes, and spam claims before live sending. Choose Doppler Transactional for high-volume SMTP, API, or FTP workflows; teams seeking a permanent free service or a lower-volume dedicated-IP entry point should consider another option.
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Doppler Transactional pricing
All 7 Doppler Transactional plans and prices →
Doppler Transactional fact sheet
| Free plan | No |
|---|---|
| Paid from | $30/mo |
| Monthly send limit | 50000 emails/mo |
| Dedicated IP option | Dedicated |
| Inbound email parsing | Not verified |
| Event webhooks | Not verified |
| Subaccounts | Not verified |
| Email log retention | Not verified |
| Free trial | 30 days · no card needed |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | GDPR, 2FA |
| Support | Email, Phone, Live chat, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: SMTP, REST API, FTP, PrestaShop |
| Pricing | 30-day trial (source) |
| Website | dopplerrelay.com |
| Facts checked | 21 Sep 2026 |
Doppler Transactional integrations
Doppler Transactional lists 4 integrations on its own site.
- SMTP
- REST API
- FTP
- PrestaShop
Alternatives to Doppler Transactional
- PostmarkA focused SMTP and API service for transactional email, streams, templates, and events.8.8
- Amazon SESA broad AWS email platform with low usage-based pricing and no permanent free plan.8.7
- MailjetA broad email platform pairing SMTP relay with campaigns, automation, and analytics.8.7
See all Doppler Transactional alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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