turboSMTP

turboSMTP is a cloud SMTP service for sending transactional email and marketing newsletters, with message statistics and campaign tools. Its SMTP API can send messages such as account login confirmations, welcome notes, and receipts from a website or app. The dashboard tracks opens and clicks in real time and includes tools for managing bounces, spam reports, and unsubscribes. Smart routing, custom tracking domains, and email validation are listed among its delivery tools. Users can also design and track email campaigns in the dashboard. The service offers a free WordPress SMTP plugin and lists compatibility with WPForms, Hostinger, and WooCommerce email workflows. Its API documentation includes sample code in PHP, C#, Java, Python, Perl, and Ruby. Security features include SPF/DKIM authentication, API keys, custom sending domains with SPF/DKIM/DMARC, and two-factor authentication. A free plan allows 200 emails per day for the first six months. Basic is €14.95/mo for 15,000 emails per month. The anti-spam policy bars unsolicited email and sets requirements for mass campaigns.

turboSMTP combines transactional sending, campaign tools, tracking, and delivery features. Its free allowance is time-limited, and mass mailers must follow the stated consent and sender-information requirements.

It may suit website and app operators who need transactional email, as well as teams sending newsletters or marketing campaigns. Its listed audience ranges from home and small businesses to large email providers.

turboSMTP is a cloud service for app and website email, with an SMTP relay, API and campaign tools. It suits developers and businesses that want transactional sending and newsletters in one service, particularly WordPress and WooCommerce users. Its monthly plans and credit bundles cover several sending volumes, but the free allowance lasts only six months.

Overview

Since 2009, turboSMTP has served users ranging from home businesses to large email providers. Its combination of transactional delivery and campaign management can consolidate two email tasks, while the absence of inbound email makes it unsuitable for teams that need a two-way email platform.

The service offers Android, iOS and web access, along with an API. A monthly send limit of 15,000 is stated; higher-volume plans are also available.

Key features

The SMTP relay and API support transactional messages such as receipts, welcome emails and login confirmations. Developers get sample code in PHP, C#, Java, Python, Perl and Ruby, and delivery-event webhooks can support event-driven workflows. The API and relay are useful for application sending, but the lack of inbound email keeps the service focused on outbound delivery.

Campaign tools cover design, sending and tracking. Real-time open and click tracking, plus bounce, spam and unsubscribe management, give marketers visibility into campaign response and list issues. Smart routing, custom tracking domains and pre-send email validation add delivery and list-quality safeguards.

A free WordPress SMTP plugin and compatibility with WPForms, Hostinger and WooCommerce email workflows make the service relevant to site operators using those tools. Security features include SPF/DKIM authentication, API keys, custom sending domains supporting SPF, DKIM and DMARC, and two-factor authentication. The maker also describes GDPR controls for managing, exporting and deleting user information, and advertises 24/7 multilingual support by phone, chat and email.

Mass campaigns have strict consent and identification requirements: unsolicited email is prohibited, and campaigns must explain how recipients signed up, include an unsubscribe mechanism and provide the sender's postal address. Those rules are sensible safeguards, but they rule out purchased or otherwise unsolicited lists.

Pricing

The free plan costs €0 and allows 200 emails per day, but is valid only for the first six months. It works for a short evaluation or light initial use, not as a permanent free tier.

Basic costs €14.95 a month, billed monthly, for 15,000 emails per month. It is the entry point for steady, modest-volume sending. Pro costs €79.95 a month, billed monthly, and keeps the same 15,000-email quota while adding up to 100 subaccounts; the higher price makes most sense for organizations that need account separation, rather than more sending capacity.

Credit plans have annual expiry for unused credits. Silver costs €49 a month for 50,000 emails, Gold costs €92 a month for 100,000, Resell costs €270 a month for 300,000, Titanium costs €450 a month for 500,000, and Diamond costs €790 a month for 1,000,000. These larger allotments suit higher-volume senders, but unused credits expire one year after purchase, so irregular senders should weigh the risk of paying for volume they will not use.

Enterprise has custom pricing for 1,000,000+ emails. It is the stated route for very large volumes, though the quota alone does not establish whether it is a better fit than a credit plan. Email templates are supported; the plan details do not specify seat limits except for Pro's subaccounts.

Platforms

turboSMTP supports Android, iOS, web and API access. SMTP relay, API delivery and event webhooks suit application workflows; inbound email is not supported.

Who it's for

Choose turboSMTP if you need transactional email and campaign sending together, especially for a website or app already using WordPress, WooCommerce or compatible workflows. Its API languages, webhooks and delivery tools also suit developers managing outbound mail. It is a weaker fit for a permanent free service, inbound email, or campaigns that cannot meet its consent and sender-address rules.

Pros and cons

• Pros: Transactional SMTP/API sending and campaign tools share one service, which can simplify outbound email operations.
• Pros: Real-time tracking, bounce and unsubscribe management, routing and validation give senders tools to monitor campaigns and address delivery issues.
• Pros: Monthly quotas and larger credit bundles provide options from 15,000 to 1,000,000 emails, with an Enterprise tier for 1,000,000+.
• Cons: The 200-email-per-day free plan ends after six months, so it cannot support ongoing no-cost use.
• Cons: Pro costs €79.95 a month for the same 15,000-email quota as Basic; its value depends on needing up to 100 subaccounts.
• Cons: Unused credit-plan balances expire one year after purchase, making these plans less appealing when sending is unpredictable.
• Cons: There is no inbound email, and mass campaigns must satisfy explicit consent, unsubscribe and postal-address requirements.

Alternatives

Mailchimp is worth considering for a contact-based campaign start: its free plan allows 250 contacts, 500 emails per month, 250 emails per day, one audience and one seat. Pick turboSMTP instead when a 15,000-email monthly Basic quota and transactional SMTP/API sending matter more.

Twilio Segment is a freemium option with a free plan described around visitor tracking, Reverse ETL records and data sources; consider it when those data capabilities are the priority rather than turboSMTP's outbound email focus.

MailerSend offers a free allowance of 500 emails per month, 100 daily API requests, one domain and one template. It may suit a smaller API-sending start; turboSMTP offers a higher stated Basic monthly email quota and campaign features.

Nuntly has a free plan with 3,000 emails per month, 100 per day, one domain, one inbox and 30-day data retention. Consider it when that free allowance and included inbox fit better than turboSMTP's six-month free period.

Postmark offers a free plan of 100 emails per month with no overages that never expires. It is a more durable no-cost starting point for very low volume; turboSMTP's free daily allowance is higher but temporary.

Twilio SendGrid offers a 60-day free trial capped at 100 emails per day and 100 contacts. Consider it if a time-limited trial with those caps suits your evaluation needs.

EmailSuccess is another option for readers comparing outbound email services.

Maileroo is another option for readers comparing email services.

Browse the Transactional Email Software directory for more options.

Verdict

turboSMTP is a strong fit for developers and businesses that want transactional sending and campaign management under one roof, with a useful range of delivery and tracking tools. Choose it for outbound email workflows and a suitable sending quota; look elsewhere if you need inbound email, a lasting free plan or more flexibility around campaign consent and sender identification.