5 Best Transactional Email Services with High Deliverability

Email is an essential communication tool for businesses, but the success of any email marketing campaign hinges on one crucial factor: deliverability.

The higher the deliverability rate, the better – as it ensures your emails end up in your recipients’ inboxes instead of getting lost in spam folders.

But here’s where it gets complicated.

Even after partnering with transactional email services, businesses shared a common frustration when their customers failed to receive emails regarding order or signup confirmations.

So, where do these emails go? Most often, this is caused by the strict sending limits imposed by website hosting providers.

Take IONOS, for example, which allows no more than 30 emails every 5 minutes. Exceed this limit and your emails may be blocked entirely.

Considering all these challenges, you need reliable transactional email services. A service capable of sending emails via SMTP relay or an API – with optimized servers to maximize the probability of reaching targeted recipients and avoiding spam filters.

Here are the 5 best email delivery services with exceptional deliverability rates your business can rely on for customer communication.

1. UniOne

UniOne is a powerful email delivery service that prioritizes high deliverability, making it a top choice for businesses that require reliable and efficient email communication.

UniOne’s API-first approach facilitates seamless integration with existing systems, providing a robust solution for companies of all sizes.

Key Features

• Two-factor authentication
• Instant Event Notification via Webhooks
• Ready-to-use email integrations with Bloomreach and Drupal
• Visual Dashboards
• Dedicated IPs
• Click tracking
• Unsubscribe tracking
• Custom email campaigns tagging
• Real-time event tracking
• Up to 45 days of log retention
• Up to 100 days of analytics data storage
• Analytics CSV data export
• Email delivery, bounce, spam, & open rates
• Email Validation API
• White-Label Model

Why UniOne Stands Out

UniOne’s focus on high deliverability is evident through its robust Web API, easy SMTP API, and ready-to-use integrations. By offering features like dedicated IPs and email validation, UniOne ensures that your emails consistently reach their intended recipients. Responsive customer support is another key reason this email delivery service stands out.

With a strong emphasis on reliability and customer satisfaction, UniOne is a trusted partner for businesses aiming to enhance their email delivery strategy.

2. Mailgun

Mailgun is a popular email delivery service offering powerful features for both developers and businesses. Its versatile API and detailed documentation make it easy for businesses to integrate it into their applications and increase delivery rates.

Key Features

• Send time optimization
• Email tracking and analytics
• Email validation
• Email templates
• Email preview

Why Mailgun Stands Out

Mailgun’s reputation for reliability and ease of use makes it a popular choice for developers and businesses. Its advanced analytics and deliverability features ensure that your emails not only reach the inbox but also meet the expectations of your recipients. However, while Mailgun is a solid choice, UniOne’s additional features like instant event notifications and white-label options make it a more comprehensive solution for businesses looking to maximize deliverability.

3. SendGrid

SendGrid is another popular email delivery service known for its reliability and scalability. With its robust infrastructure and commitment to industry standards, SendGrid ensures that your emails reach your subscribers’ inboxes without any issues.

Key Features

• Email validation API
• Dynamic email templates
• Third-party integration options
• Delivery optimization tools
• Dashboards for in-depth analysis

Why SendGrid Stands Out

SendGrid’s scalability is one of its strongest attributes, making it perfect for businesses that need to send large volumes of emails. Its comprehensive feature set, including A/B testing and deliverability insights, helps businesses optimize their email campaigns. UniOne, on the other hand, maybe a better option for those seeking an API-first solution with instant event notifications and more advanced customization options.

4. Brevo (Formerly Sendinblue)

Brevo, previously known as Sendinblue, is a versatile email delivery service that combines transactional and marketing email capabilities with a focus on high deliverability. This email delivery service is highly regarded for its user-friendly interface and robust features.

Key Features

• Email templates
• Drag-and-drop editor
• Email tracking and analytics
• Customized log retention

Why Brevo Stands Out

Brevo stands out as a comprehensive email delivery solution with a strong emphasis on both transactional and marketing emails. Businesses looking to optimize their email strategy can benefit from its advanced reporting and marketing automation features.

5. Postmark

Postmark (part of ActiveCampaign) is another reputable email delivery service focused on “transactional email” and renowned for its speedy email delivery. Businesses can send bulk and transactional emails via separate channels, which adds to its speed. The dedicated IP addresses, detailed analytics, and strong security measures provided by Postmark ensure that your emails are delivered reliably and safely.

Key features

• Sandbox server
• Detailed documentation
• Suppression management
• In-depth analytics

Why Postmark Stands out

Postmark’s emphasis on transactional emails makes it ideal for businesses dependent on the timely delivery of critical communications like password resets, order confirmations, and account notifications.

Conclusion

Your business marketing strategy relies heavily on email delivery service – which can either make or break you. While all of the services mentioned here offer strong deliverability, UniOne stands out due to its API-first approach, its laser focus on bulk and transactional emails, and its comprehensive feature set.

Whether you’re a small business or a large enterprise, UniOne provides the tools and support you need to elevate your email strategy and achieve better results.

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