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SendPost

Guides and resources for SendPost — the transactional email API built for reliable delivery, real-time analytics, and developer-friendly integration.

Node.js and Python logos next to code snippet showing SendPost email API integration example with async function for sending transactional emails
Latest

Email API for Developers: Node.js and Python Integration Examples

Sending transactional email from Node.js or Python in ~20 lines of code. Covers webhook handling, retry logic, and SPF/DKIM/DMARC setup so your mai...

Saitej Makhijani Aug 11, 2026

Ensure Your Emails Land in Inboxes: A Guide to Email Blast Deliverability

We've all been there, sending out an email blast with high hopes, only to have it land in the dreaded spam folder. It's like sending a message in a bottle into the vast ocean of the internet, with ...

Grant Hatfield
February 7th, 2023

The Ultimate Alternative to Amazon SES - SendPost

Big or small, no business can stand in the market without a reliable email deliverability tool.

Grant Hatfield
January 12th, 2023

PowerMTA Pricing and Plans With Its Best Alternative

The market is full of email communication tools, each promising the best results. However, even with the best tools, you are still at risk of email spamming.

Grant Hatfield
December 30th, 2022

Postmark Pricing and Plans With Its Best Alternative [2026]

Emails are the lifeblood of any SaaS business. Whether bringing all team members on board with the latest company news or staying in touch with your customers, thoughtful email communication can ma...

Saitej Makhijani
December 16th, 2022

What are Email APIs & How Do They Work?

Emails aren’t just meant for your marketing team to maintain customer engagement. It’s the backbone of your product, making it functional.

Grant Hatfield
December 12th, 2022

What Are SMTP Errors, and How to Troubleshoot Them?

Once you hit the send button, every email should safely land in the recipient’s inbox. But unfortunately, we don’t live in a perfect world.

Grant Hatfield
December 5th, 2022

SMTP Relay: How Does It Work, and Its Top 5 Benefits

Sending an email seems like an easy job. You draft the perfect message and hope to hear from the customer.

Grant Hatfield
November 25th, 2022

100% Inbox Deliverability: Truth & Proven Tips

It doesn’t exist if it didn’t land in the inbox.

Grant Hatfield
September 13th, 2022

Email Sender Reputation - How to Improve it?

“A bad email reputation is like a hangover: hard to get rid of, and it hurts everything else.” – Christ Marriott.

Grant Hatfield
September 5th, 2022

What is Email Deliverability, and How is it Calculated?

Every marketer raves about email marketing and how it tops the ROI charts.

Grant Hatfield
July 29th, 2022

Email Deliverability in 2026: How to Actually Reach the Inbox

Email is one of the few channels where your copy can be sharp, your segmentation thoughtful, your offer exactly what the subscriber asked for at signup. But none of it matters if the message lands ...

Grant Hatfield
May 23rd, 2022

12 Best Transactional Email Examples

Email marketing has become a synonym for promotional campaigns. That’s because marketers usually put all their eggs in that basket, hoping to secure maximum returns.

Grant Hatfield
May 9th, 2022

Best Email Deliverability Tools to Test & Improve Inbox Placement

Billions of emails are exchanged daily, and over 100 million are blocked too from reaching the subscriber’s inbox.

Saitej Makhijani
April 21st, 2022

Transactional Emails: Definition, Benefits, and Examples

While marketers spend hours perfecting their marketing emails, there is one thing they often overlook– transactional emails.

Grant Hatfield
April 21st, 2022

Email Deliverability Issues (With Best Practices to Solve Them)

Unlike Thomas from Magic Potion trying to sell me horoscope service and shorts to match the horoscope or Beth from the Secret Bank of Swiss asking for my credit card number and my mother’s maiden...

Grant Hatfield
June 27th, 2020