turboSMTP

Overview

turboSMTP is a cloud service for sending transactional email and newsletters through SMTP or an API, with campaign design and tracking in the same dashboard. It suits developers and businesses that want to combine operational email with marketing sends, particularly WordPress and WooCommerce users. Its breadth is useful, but the free tier is temporary and mass mail carries clear compliance obligations.

Key features

SMTP relay and API support app and website messages such as login confirmations, welcome notes and receipts. Sample code covers PHP, C#, Java, Python, Perl and Ruby, and delivery-event webhooks can support event-driven workflows. The service does not handle inbound email, so teams needing a two-way email system will need another product for that part of their work.

The dashboard adds campaign design and sending to the delivery service, with real-time open and click tracking and bounce, spam and unsubscribe management. Smart routing, custom tracking domains and pre-campaign email validation address delivery and list quality. These tools suit senders who want campaign work alongside SMTP delivery, though they do not remove the need to maintain permission-based lists.

turboSMTP prohibits unsolicited email. Mass campaigns must explain how recipients signed up, include an unsubscribe mechanism and show the sender’s postal address. WordPress users can use the free SMTP plugin; the maker also describes compatibility with WPForms, Hostinger and WooCommerce email workflows. Security features include SPF/DKIM authentication, API keys, custom sending domains with SPF/DKIM/DMARC, and two-factor authentication. The maker advertises multilingual phone, chat and email support around the clock.

Pricing

The Free plan costs nothing and allows 200 emails per day, but is valid only for the first six months. It is a short-term way to assess a low-volume sending workflow, not a lasting free tier.

Basic costs €14.95 a month for 15,000 emails per month, making it the entry point for a modest, regular sending volume. Pro costs €79.95 a month for the same 15,000-email quota, with up to 100 subaccounts; that extra account capacity is the meaningful distinction for organizations managing multiple senders, rather than a higher message allowance.

Prepaid credit plans suit less regular or larger sends, with unused credits expiring one year after purchase: Silver is €49 a month for 50,000 emails; Gold is €92 a month for 100,000; Resell is €270 a month for 300,000; Titanium is €450 a month for 500,000; and Diamond is €790 a month for 1,000,000. The annual expiry gives buyers more flexibility than a monthly quota, but credits still have a deadline. Enterprise offers 1,000,000+ emails with custom pricing.

Platforms

turboSMTP is available on web, Android and iOS, with an API for integration into apps and websites. Dedicated IPs are an option. The service supports up to 15,000 monthly sends on its Basic and Pro plans, while higher-volume plans offer larger stated quotas.

Who it's for

Choose turboSMTP if you need transactional delivery and campaign tools in one service, or if your website relies on SMTP email and WordPress or WooCommerce workflows. Its API examples and webhooks also make it relevant to development teams. It is less suitable when inbound email is essential, when a free plan must be permanent, or when sending practices cannot meet its consent and unsubscribe requirements.

Pros and cons

• Pros: SMTP relay, API, transactional messages and campaign tools are combined, reducing the need to split sending and campaign work across services.
• Pros: Webhooks, a broad set of API language examples, and WordPress and WooCommerce compatibility provide several integration paths.
• Pros: Plans span 15,000 to 1,000,000 emails, with one-year credit validity on the larger credit bundles.
• Cons: The free allowance lasts only six months, limiting its value for ongoing low-volume use.
• Cons: Inbound email is unavailable, and mass campaigns must meet explicit consent, unsubscribe and postal-address requirements.
• Cons: Pro costs more than Basic without increasing its 15,000-email monthly quota; its case rests on the 100 subaccounts.

Alternatives

For a broader transactional-email shortlist, browse Transactional Email Software. Consider Mailchimp instead if a freemium marketing platform with web and mobile apps is a better fit: its free plan allows 250 contacts, 500 emails per month, 250 per day, one audience and one seat. Twilio Segment is another freemium option, with a free plan centered on visitor tracking, Reverse ETL records and data sources rather than turboSMTP's email quotas.

Maileroo may suit senders who want a free tier covering both outbound and inbound email: its free plan allows 3,000 outbound and 1,000 inbound emails per month, plus two custom domains. MailerSend has a free plan with 500 emails per month, 100 daily API requests, one domain and one template, so it is a more constrained starting point for API sending. Nuntly offers a free plan with 3,000 emails per month, a 100-per-day cap, one domain and one inbox, with 30-day data retention.

Postmark is worth considering when a permanent free allowance matters: its free plan provides 100 emails per month with no overages. Resend Broadcasts offers 3,000 emails per month, 100 per day and three domains on its free plan. SMTP2GO has a free plan for 1,000 emails per month, with phone and chat support limited to 14 days.

Verdict

turboSMTP is a strong fit for businesses and developers that want one sending service for transactional messages and tracked campaigns, especially those already using WordPress or WooCommerce. Its range of quotas and integration options is the main reason to choose it; the six-month free limit, lack of inbound email and strict mass-mail requirements are the reasons to look elsewhere.