SMTP2GO
Transactional email delivery over SMTP relay and API, with a Singapore sending region
SMTP2GO is a transactional email provider offering SMTP relay and API sending with SPF/DKIM authentication, blacklist monitoring, real-time delivery reporting, and inbox and spam-filter testing. The free plan allows 1,000 emails a month with a 200-per-day cap and 5 days of reporting; Starter is USD 10 a month for 10,000 emails and Professional USD 75 a month for 100,000, with overage at USD 1 and USD 0.85 per thousand respectively and two months free on annual billing. Published server regions include Singapore, Sydney, Christchurch, the United States, and Europe.
- ✓Published Singapore sending region, unusual among transactional providers
- ✓Free tier is enough to run a small product's transactional mail in testing
- ✓Delivery diagnostics — blacklist monitoring, feedback loops, rendering and spam tests — are part of the product, not an upsell
- ✓Simple volume-based pricing with stated overage rates
- ×Free plan is capped at 200 emails a day and 5 days of reporting retention
- ×Transactional only — no campaign builder, list management, or automation
- ×USD billing with no local payment rail and an English-only interface
- ×Deliverability still depends on sender reputation, content, and consent; no provider removes that
About SMTP2GO
SMTP2GO is a transactional email service: application email sent over an SMTP relay or a REST API rather than marketing campaigns sent from a list. It handles SPF and DKIM authentication, blacklist monitoring, reverse DNS, ISP throttling and feedback loops, and reports delivery, bounces, unsubscribes and spam complaints in real time. Its published server locations include Singapore, Sydney and Christchurch alongside US and European regions. The free plan covers 1,000 emails a month capped at 200 a day, and paid plans start at USD 10 a month for 10,000 emails.
Key Features
Best For
Southeast Asia Fit
SMTP2GO publishes a Singapore sending region, which is the concrete SEA fact most transactional providers do not offer — relevant for latency and, for some buyers, for where mail egresses. Billing is USD and there is no local payment rail, no Thai, Vietnamese or Bahasa interface, and no marketplace or LINE integration, because this is infrastructure rather than a marketing tool. A team that wants campaigns and newsletters is buying the wrong category and should look at an email marketing platform instead.
- Global
- SEA
Integrations
- Other
- SMTP relay
- REST API
- WordPress
- Node.js
- PHP
- Python
- Ruby
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Related Analysis & Guides
The questions operators actually ask.
What is SMTP2GO for?
Application email: receipts, password resets, order confirmations, and system notifications sent over SMTP or an API. It is not a newsletter or campaign tool.
How much does SMTP2GO cost?
As published on 2026-08-25: Free at 1,000 emails a month with a 200-per-day cap and 2 team members; Starter at USD 10 a month for 10,000 emails with overage at USD 1 per thousand; Professional at USD 75 a month for 100,000 emails with overage at USD 0.85 per thousand; Premier quoted for volumes above 3,000,000. Annual billing is advertised as two months free.
Does SMTP2GO send from Southeast Asia?
Its published server locations include Singapore, alongside Sydney, Christchurch, US and European regions. Confirm the region your account actually sends from with support before treating it as a residency or latency guarantee.
Is SMTP2GO an alternative to an email marketing platform?
No. It replaces the sending layer, not the marketing layer. A business that needs campaigns, signup forms, and automations needs a marketing platform; a business that needs reliable receipts needs this.