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Email Startups Worth Your Attention in 2026
On June 19, 2026
16min read
The number of new email startups proves that email is on the rise again. In this post, we talk about inspiring email startups to follow. With the technologies, principles, and marketing strategy they use, they are able to bring email to a new level.
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On June 18, 2026
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The top email hosting providers for small businesses compared by price, features, security and ease of use to help you choose confidently.
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15min read
We compared 7 popular SMTP services for email marketing on deliverability, reliability, scalability, and more: find the best one. Click here.
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Technical Content Writer @Mailtrap
11 B2B Email Marketing Software Tried, Tested, and Compared: Find Out The Best Pick for Your Company
On June 18, 2026
21min read
We compared 11 B2B email marketing software on email deliverability, email personalization, automations, integrations, and more. Click here.
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Best 11 Email Marketing Platforms Compared: Find Out Which One Your Go-to Choice
On June 18, 2026
26min read
We compared 6 email marketing platforms on deliverability, scalability, reliability, pricing, features, user experience, and more - find out the most suitable.
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10 Best Free Email Marketing Platforms Compared: Find Out Which One You Should Try
On June 18, 2026
23min read
We compared the best free email marketing platforms out there so you don't have to! Find out which ones made the cut!
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Load More Posts
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On June 11, 2026
16min read
Find out which is the best transactional email service provider based on comparison of deliverability, reliability, scalability, and more.
Ketevan Bostoganashvili
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+1 more author
How to Combine Social Media and Email Marketing for Maximum Reach
On May 14, 2026
5min read
Learn 10 actionable ways to integrate social media and email marketing to amplify your brand voice.
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6 Best Email APIs for AI Agents Tested & Compared: Here’s What I Found
On May 13, 2026
21min read
Find out which email APIs for AI agents give you the most advanced features and have the best email/price ratio!
Ivan Djuric
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5 Best Email API for Python Developers Tested & Compared
On January 30, 2026
12min read
I compared 5 best email APIs for Python developers on SDK quality, framework compatibility, flexibility, email infrastructure, pricing, and more.
Yevhenii Odyntsov
Content @Mailtrap
How to Create a WordPress Contact Form: With or Without Plugin, Add Form Validation, and Set Up Email Sending
On January 09, 2026
14min read
Learn how to create and add a WordPress contact form to your website with or without a plugin in our in-depth tutorial.
Veljko Ristić
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How to Send Emails in WordPress using Plugin, wp_mail() Function, and SMTP
On January 09, 2026
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I’ve compared 5 subject line testers based on quality of results, ease of use, price, features, and more - find out what works best for you.
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How to Send Emails in WordPress using Plugin, wp_mail() Function, and SMTP
On January 09, 2026
15min read
Learn how to send emails in WordPress: an overview of the options and a guide for each of them like wp_mail() and the SMTP plugin.
Veljko Ristić
Content Manager @Mailtrap
How to Test Your WooCommerce Emails: Insights and Obstacles to Overcome
On December 09, 2025
4min read
Learn how to test your WooCommerce emails to ensure they display correctly, delivered reliably and error free.
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How to Test Email Deliverability: Process & Toolkit Explained
On March 24, 2025
12min read
Poor deliverability can cause some serious problems. Luckily, there are various free and paid tools for testing emails.
Piotr Malek
Technical Content Writer @ Mailtrap
+1 more author
Email Blacklists Explained: Causes, Solutions, Prevention
On January 24, 2025
9min read
Find out what an email blacklist is, how it works, what are the reasons to get blacklisted, and how to get off the blacklist and avoid it in the future.
Dzenana Kajtaz
Technical Content Writer @Mailtrap
Email Client Testing Explained
On September 02, 2024
11min read
Learn how to test emails in different email clients using Email Sandbox, Litmus, Email on Acid, and more.
Diana Lepilkina
Content Specialist @Mailtrap
+1 more author
Load More Posts
6 Best Email MCP Servers in 2026: Tested and Compared
On June 10, 2026
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I evaluated Mailtrap, Mailgun, Brevo, Postmark, SendGrid, and Amazon SES against five verifiable criteria – official status, tool breadth, setup […]
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6 Best Email APIs for AI Agents Tested & Compared: Here’s What I Found
On May 13, 2026
21min read
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What is an ESP or Email Service Provider? A Beginner’s Guide
On February 05, 2026
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Find out what is an ESP or email service provider, how it differs from an email provider, get a list of popular ESPs, and learn how to choose a suitable provider.
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5 Best Email API for Python Developers Tested & Compared
On January 30, 2026
12min read
I compared 5 best email APIs for Python developers on SDK quality, framework compatibility, flexibility, email infrastructure, pricing, and more.
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On January 09, 2026
9min read
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Best 8 WordPress Transactional Email Plugins Reviewed
On January 09, 2026
9min read
We've picked eight great plugins for sending transactional emails in WordPress. Learn more about their features, integration options, and price tags.
Yevhenii Odyntsov
Content @Mailtrap
Load More Posts
HTML Character Entities: NBSP and HTML Spaces Explained
On February 04, 2025
10min read
, or non-breaking space, is an HTML character used to create a space. We analyze when to use it and when to opt for other solutions.
Ivan Djuric
Technical Content Writer @Mailtrap
+1 more author
Responsive HTML Email Template Development: A Step-by-Step Guide for Email Developers
On December 20, 2024
8min read
Learn how to develop a custom responsive HTML email template from scratch that renders perfectly in every email client.
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Content Manager @Mailtrap
HTML vs Plain Text Email: What to Choose For Your Next Email Campaign?
On July 30, 2024
8min read
HTML vs plain text emails compared on performance, deliverability, ROI, and more! Click here to learn the details and decide on your next email campaign.
Veljko Ristić
Content Manager @Mailtrap
HTML Email: A Complete Tutorial for Email Marketers, Designers, and Developers
On July 10, 2024
20min read
Learn what HTML email is, how to create HTML email from scratch or using templates and builders, best practices, and role of HTML in email deliverability.
Veljko Ristić
Content Manager @Mailtrap
Complete Tutorial on Mailto Links: What They Are & How to Use Them
On June 13, 2024
7min read
You can customize mailto links in many ways. We describe them all, give examples, and discuss whether mailto is the right approach.
Yevhenii Odyntsov
Content @Mailtrap
Here’s How You Add an Animated GIF to Your Email Signature
On May 25, 2024
7min read
Looking for ways to make your emails pop? This guide will show you how to add an animated GIF to your email signature.
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Content @Mailtrap
Load More Posts
Email Startups Worth Your Attention in 2026
On June 19, 2026
16min read
The number of new email startups proves that email is on the rise again. In this post, we talk about inspiring email startups to follow. With the technologies, principles, and marketing strategy they use, they are able to bring email to a new level.
Yevhenii Odyntsov
Content @Mailtrap
11 B2B Email Marketing Software Tried, Tested, and Compared: Find Out The Best Pick for Your Company
On June 18, 2026
21min read
We compared 11 B2B email marketing software on email deliverability, email personalization, automations, integrations, and more. Click here.
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On June 18, 2026
26min read
We compared 6 email marketing platforms on deliverability, scalability, reliability, pricing, features, user experience, and more - find out the most suitable.
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On June 18, 2026
23min read
We compared the best free email marketing platforms out there so you don't have to! Find out which ones made the cut!
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10 Onboarding Email Templates
On May 19, 2026
10min read
Choose the most suitable out of 10 ready-made onboarding email templates or learn how to write an effective custom onboarding email, test, and send it.
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On May 14, 2026
5min read
Learn 10 actionable ways to integrate social media and email marketing to amplify your brand voice.
Afirah Shaikh
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Load More Posts
API for Email Sending Stats: Track the Performance of Your Emails Directly from Your App/Project
On December 22, 2025
2min read
Learn more about Mailtrap's Email Sending Stats API, which lets you retrieve the stats of your sent emails without opening the UI.
Ivan Djuric
Technical Content Writer @Mailtrap
Manage Setups with Multiple Teams with Organization and Sub-Accounts
On October 07, 2025
1min read
Learn how to use Mailtrap’s latest feature to manage multiple accounts under a single organization, separate resources, streamline billing and permissions, and more.
Ivan Djuric
Technical Content Writer @Mailtrap
Mailtrap Releases Automations: Build Email Sequences Using Visual Blocks
On September 18, 2025
2min read
Find out all about latest feature: Automations. With it, you can build email sequences and workflows directly in Mailtrap's visual builder, no coding required!
Ivan Djuric
Technical Content Writer @Mailtrap
Let Your AI Agent Send Emails: Mailtrap MCP Server is Now Live!
On April 26, 2025
1min read
Find out what Mailtrap's very own MCP server can do if you leverage it with your AI IDE or personal AI assistant!
Ivan Djuric
Technical Content Writer @Mailtrap
Now You Can Send Targeted Campaigns with Mailtrap Contacts
On October 21, 2024
1min read
You can now use Mailtrap Contacts & Lists to organize your contacts into lists and send targeted campaigns. Learn more here.
Ketevan Bostoganashvili
Technical Content Writer @Mailtrap
Improved Templates with Drag-and-Drop Editor, Simplified Integration Flow, and More
On July 03, 2024
2min read
Mailtrap extends Templates features with a new visual builder, easier integrations, and more. Learn what’s new here.
Ketevan Bostoganashvili
Technical Content Writer @Mailtrap
Load More Posts
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Email tools menu
Email API/SMTP RESTful API and SMTP for reliable email sending
Email tools menu
Email Sandbox Inspect and debug emails in staging, dev & QA environments
Email tools menu
Email Marketing Create, schedule, and send email marketing campaigns
Features
Email API
SMTP Service
Bulk Stream
Actionable Analytics
Sending API Docs
Features
Fake SMTP
HTML Checker
Spam Checker
QA Automation
Sandbox API Docs
Features
Email Templates
Email Template Builder
Automations
Contacts & Segmentation
Campaign Scheduling
Email Analytics
Free tools
DMARC Record Checker
DKIM Record Checker
SPF Record Checker
Domain Blocklist Checker
IP Blocklist Checker
Expert help
Migration Support
Onboarding Assistance
Deliverability Consulting
INTEGRATIONS View all
Supabase Vercel Claude Antigravity Cursor
SDKs View all
Python PHP Ruby NodeJS Java
* Pricing
Pricing sublist
Email API/SMTP Send transactional emails
Email Sandbox Test your emails
Email Marketing Send promo campaigns
* Enterprise teams
* Email for AI
Guides
Claude
Cursor
OpenClaw
MCP Server
Antigravity
Windsurf
Links
AI Agents Tools for AI agents to send emails.
MCP Server Connect AI agents via MCP.
Skills Built-in email capabilities for AI agents.
* Resources
Solutions
SaaS
FinTech
SMBs
Travel & Hospitality
EdTech
Migration support
from SendGrid
from Mailgun
from Intuit Mailchimp
from Amazon SES
from Postmark
from Brevo
For developers
Sending API
Sandbox API
Email Templates API
SDKs
For partners
Partnership programs
Affiliate program
For agencies
Learn
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Blog The best content about emails
Academy Video tutorials on every email aspect
Case studies Success stories of our customers
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