Topic
Email Infrastructure
The plumbing behind sending at scale: MTAs, dedicated and shared IPs, IP warming, DNS, TLS, queueing, and the tradeoffs of self-hosting versus a relay.
18 articles
- 12 min readEmail Infrastructure
How Email Sending is Changing in 2026
Email sending has become much more about the controls, routing, security and other technical considerations that sit behind the message itself. A single business may now have multiple applications, environments, customers, brands, domains, sending identities and teams all sending email through the same infrastructure. What once might have been one SMTP credential can now become dozens of different sending streams, each with its own requirements and security considerations.
Patrick Yammouni
- 8 min readEmail Authentication
SPF Flattening or Macros: Which One Should You Be Using?
SPF’s 10-lookup limit can trigger failures for domains using many email providers. Flattening replaces includes with IP lists but can grow large or stale, while macros use one dynamic DNS lookup and scale better. The right choice depends on address-set size, complexity and upkeep.
Areeb Majeed
- 8 min readDeliverability
Email Marketing Success Stories: 7 Real Businesses That Transformed Their Results
Email might seem old-school in our age of social media and instant messaging, but it remains one of the most powerful tools for business growth. The problem? Many businesses struggle with emails that never reach their customers, get buried in spam folders, or simply don't generate results.
Jody Gail Arsolon
- 7 min readDeliverability
SMTP2GO Review (2025): Pros, Cons, and Best Alternatives
While SMTP2GO offers these benefits, there are several alternatives available in the market that provide similar services with their own unique features and advantages.
Jody Gail Arsolon
- 8 min readDeliverability
Apple’s Private Relay Email Addresses (@privaterelay.appleid.com): What They Are & How They Work
Apple has built its reputation on strong privacy and security. They’ve introduced tons of features over the years to keep your personal information safe.
Jody Gail Arsolon
- 9 min readEmail API & Integrations
How to Send Emails in Node.js: Nodemailer and HTTP API
Learn to send emails in Node.js with Maileroo's SMTP and API. This guide covers setup, using Nodemailer, sending plain text, HTML, and template emails, and securing API keys. Streamline email delivery with these easy steps.
Areeb Majeed - 4 min readEmail Authentication
How to Set Up Reverse DNS (rDNS) / PTR?
Reverse DNS (rDNS) is essential for tasks like email authentication, network diagnostics, and compliance. It involves mapping an IP address back to a domain name using PTR records. Proper rDNS setup ensures secure and efficient network operations, aiding in email deliverability and troubleshooting.
Areeb Majeed - 26 min readGeneral
Email Glossary - Updated for 2025
While sending emails you'll encounter plenty of words and acronyms, which are all essential to the email campaigns. Read our updated email glossary, updated for 2024!
Eivor
- 7 min readDeliverability
MailGun Review 2026: Pros, Cons, and Alternatives
Mailgun is a popular email deliver service provider founded in 2010. It offers four pricing plans, including a Free 30-day plan of up to 5,000 emails.
Eivor
- 12 min readDeliverability
Guide to IP Warming - Improve Email Deliverability and ROI Using These Tips
Email deliverability depends on IP reputation. Use IP warming by gradually increasing email volumes to ensure your messages reach customers and boost engagement.
Areeb Majeed - 12 min readGeneral
SendGrid Review (2025): Pros, Cons, and Alternatives
With the increasing importance of email marketing in the information overload era, it is crucial for maintaining direct and personalised communication with audiences. This comprehensive 2025 SendGrid review provides a nuanced analysis and comparisons with alternative platforms.
Jody Gail Arsolon
- 15 min readDeliverability
Actionable Checklist to Improve Email Deliverability
Maintaining email deliverability is essential for marketing success. Key strategies include avoiding dodgy URLs, selecting a reputable ESP, warming up IPs, managing bounces, ensuring email authentication, and focusing on user experience through segmentation and consistent sending patterns.
Areeb Majeed
FeaturesCrafted for a Delightful Email Experience
Discover the products and services that help businesses manage email infrastructure, improve deliverability, and scale efficiently.
SMTP Relay
Send transactional and bulk emails through reliable SMTP infrastructure built for speed, security, and deliverability.
Email API
Integrate email delivery into your applications using powerful APIs built for flexibility, scalability, and performance.
Streams
Separate transactional and marketing traffic into isolated sending streams to protect reputation and keep critical emails fast.
Inbound Routing
Receive and route incoming emails directly into your applications using flexible automation and processing workflows.
Email Marketing
Create and deliver marketing campaigns designed to increase engagement, reach, and customer retention.
Webhooks
Receive real-time event notifications for deliveries, opens, and clicks for storage and automation workflows.
Analytics
Monitor email performance with detailed insights, reporting tools, and actionable delivery metrics in real time.
Dedicated IPs
Gain greater sending control with dedicated IPs designed for consistency, reputation, scalability, and reliability.
Developer SDKs
Build integrations faster using SDKs, code examples, and resources for modern application development.
