Switch Products

SendX

Email software to send campaigns, build lists, and automate marketing

Current

SendPost

Reach your customers' inboxes on time, every time with Email API + SMTP Relay

Features

View all Features

Addons

Franchise Support Custom Reply Bot Open/Click Tracker Read, Skimmed And Glanced Shortcuts Dynamic Sender View all Addons

Integrations

Shopify Stripe twilio Zapier

Creators & Media

Newsletters Publishers Authors & Bloggers

Business

Ecommerce SaaS Local Businesses

Gaming

Casinos iGaming

Learn

Email Strategy Email Deliverability Email Automation Email Design Email List Building Newsletters

Compare

Tools & Pricing Case Studies Blog Guides Resources

Developers

SendX API Docs SendPost API Docs Knowledge Base
Pricing
Ask AI
Log In Book a demo Try it free
Back to Blog

Email Deliverability

Everything you need to land in the inbox — from authentication (SPF, DKIM, DMARC) to domain reputation, warmup, and avoiding spam filters.

Illustrated man with glasses in dark hoodie next to yellow text boxes reading
Latest

How I Got 97% Deliverability on a Domain Google Had Already Written Off

Joshua Waldman Mar 18, 2026

Email Deliverability Metrics: A Comprehensive Guide

In the world of email marketing, deliverability is key. After all, what good is a carefully crafted email campaign if it never even makes it to the inbox?

Grant Hatfield
March 8th, 2023

How to Use Email Authentication Protocols to Improve Deliverability

Email authentication can be a bit of a confusing topic, but don't worry! If you've heard that email authentication protocols can help improve deliverability, you're on the right track.

Grant Hatfield
February 28th, 2023

How to Bypass Spam Filters for Transactional Emails

If you're sending high volumes of emails, you know the struggle of having them end up in the spam folder. It's frustrating, to say the least. All that time and effort put into crafting the perfect ...

Grant Hatfield
February 17th, 2023

How to Improve Email Authentication for Transactional Emails

Sending transactional emails can be a tricky business, as we all know. With the rise in spam and phishing emails, it's more important than ever to make sure your emails are properly authenticated. ...

Grant Hatfield
February 8th, 2023

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

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

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

7 Proven Ways to Improve Your Email Deliverability (With One Ingenious Tip)

If even your best content isn’t getting enough clicks, it’s time to shift focus to another possible problem.

Saitej Makhijani
April 25th, 2022

10 Best Tools to Test & Improve Your Email Deliverability

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

What is a DKIM (DomainKeys Identified Mail) Record?

DKIM or Domain Keys Identified Mail is a method to authenticate emails. This is done in order to detect if the sender is fake or if the received email is from a forged address. Forged addresses a...

Meera R
October 8th, 2021

What is a DMARC Record?

One of the most recent advances in email technology, Domain-based Message Authentication, Reporting & Conformance (DMARC) has also been among the most misunderstood ones. It plays a role in a...

Meera R
October 8th, 2021

8 IP Reputation Checkers that Work [2021]

What is IP Reputation And Why You Need to Check It Every device on the internet has an IP address - whether it's your computer or the server used to send the bulk emails. When you use an ESP on...

Trevor Hatfield
October 7th, 2021