Complete guide – how to send bulk emails without spamming

Spam is unsolicited email or other sources such as SMS or social media messages. Spammers send such mailings to a large number of users without their consent. Usually, the letters offer goods or services of dubious quality. The easiest solution to send bulk cold emails without spam is to use dedicated services (like Warmy) that will […]
Best Practices for Email Subject Lines and 70 Examples

For businesses, optimizing email subject lines is one of the most important aspects of running a successful conversation. However, it’s no easy feat – after all, you only have 50 characters to make your message stand out among dozens of competitors in the recipient’s inbox. That’s why it’s essential to craft clever and engaging subject […]
The Complete Step-by-Step Guide to Sending Cold Emails

If you’re trying to find new customers and leads, one of the simplest and most cost-effective strategies is cold mailing. Whether your business is just starting out or has been around for years, cold emailing can be an effective way to reach potential clients and generate more leads in a shorter amount of time. However, […]
The Ultimate Guide to SMTP Error Codes, What They Mean, and How to Fix Them

Have you ever tried to send an email but received an error code? Here is a complete guide to SMTP error codes and how to fix them.
Consejos para dominar la adquisición de direcciones de correo electrónico

Aprender a captar direcciones de correo electrónico de forma efectiva puede marcar la diferencia en el crecimiento de tu negocio. Tanto si estás empezando desde cero como si buscas ampliar tu base actual, una estrategia sólida de adquisición de direcciones de correo electrónico te ayudará a conectar con más clientes y fortalecer tu marca. En […]
The Power of a Great Email Signature in Building Trust with Cold Leads

An email signature is not just a line with contact information at the end of your cold email, its so much more. It’s part of the first impression that you give. In essence, a professional email signature that’s well designed can help establish trust with leads that you haven’t connected with yet. Succeeding in cold […]
100 Funny Email Sign Offs Guaranteed to Get Smiles

Make your emails stand out with funny email sign offs. These examples add humor while staying professional.
Is Your Email Being Read? Here’s How to See If Someone Read Your Email

Learn how to track email opens and see if your emails are being read with these simple methods and tools. Plus, learn how Warmy can help ensure opens.
SMTP Error 421 4.4.1 – How to Fix It [SOLVED]
![SMTP Error 421 4.4.1 – How to Fix It [SOLVED] 15 Text on a white background reads: SMTP Error 421 4.4.1 How to Fix It [SOLVED], with smtp error 421 4.4.1 and How to Fix It [SOLVED] highlighted in red.](https://warmy-blog-wordpress-bucket.s3.amazonaws.com/wp-content/uploads/2025/02/09012311/SMTP-421-441.webp)
This guide goes through how to resolve SMTP Error 421 4.4.1 – No Answer from Host error and prevent it from occurring again with best practices.
The Importance of a Domain in Cold Email Marketing

Cold mailing is one of the best ways to reach potential customers in today’s digital world, and having an optimized domain for it can make a huge difference. If you’ve ever sent out an email to a prospect or client without proper branding, you know the negative effects this could have on the overall impression […]