UniOne Blog

Blog
For beginners
How to Warm Up Email Domain: The Complete Guide to Better Deliverability
Tips and tricks of warming up your sending domains for better email deliverability.
Valeriia Klymenko
23 july 2026, 10:0815 min
How to Warm Up Email Domain: The Complete Guide to Better Deliverability
Valeriia Klymenko
23 july 2026, 10:0815 min
Delivery & Inbox Placement: Why Your "Delivered" Emails Are Secretly Hitting Spam
Andrew Dyuzhov
09 july 2026, 12:2210 min
How to Send Email with SMTP: Proven Methods
Yurii Bitko
07 july 2026, 23:395 min
Email Protocols Explained: SMTP, IMAP, and POP3
Alexey Kachalov
30 june 2026, 21:357 min

Recently published

Blog
For beginners
How to End an Email Professionally
Learn the best ways to conclude an email for both business and casual communication with our personalized email sign-offs and check out examples of email closings to avoid.
Valeriia Klymenko
21 february 2024, 07:02
Blog
For beginners
How to Organize Email: Best Tips for Your Inbox
Do you use your email inbox to its fullest potential? Here are the best ways of organizing inbox email messages. Learn how to organize your emails effectively in 2024.
Vitalii Piddubnyi
16 february 2024, 14:03
Blog
For beginners
What’s an SMTP Relay Service
SMTP relay service delivers outbound emails in bulk. Find out in the UniOne guide what SMTP relay is, why this is important, and how it works with email.
Denys Romanov
13 february 2024, 12:17
Blog
For beginners
How to Recover Accidentally Deleted Emails
Here are step-by-step instructions on how to recover deleted emails and ensure you don’t permanently lose important information.
Yurii Bitko
12 february 2024, 07:36
Blog
For beginners
How to Write a Thank You Email After an Interview
Should you write a thank you email after a job interview? Of course! Learn why sending a thank-you email is important and craft your ideal follow-up email with our samples.
Valeriia Klymenko
06 february 2024, 14:01
Blog
For beginners
Cold Email Marketing 101
Cold Email marketing may be a useful tool for your business purposes if used correctly and legally. We describe the best strategies and regulations related to cold emails.
Alexey Kachalov
02 february 2024, 08:15
Blog
For beginners
How to Whitelist an Email Address in Gmail, Outlook, Yahoo, and More
Learn what whitelisting means and how to make sure that your incoming important emails never hit the spam folder.
Vitalii Piddubnyi
30 january 2024, 12:08
Blog
For beginners
Is Cold Emailing Illegal?
Sending a cold email to a commercial recipient is not illegal in most jurisdictions, but such campaigns must abide by certain rules. Here’s the rundown on all cold emailing laws and compliance tips.
Alexey Kachalov
26 january 2024, 13:54
Blog
For beginners
Email Threads: What Are They & Best Practices To Manage Them
Email threads are conversations containing a series of emails and responses grouped together. Learn how they can make it easier to track conversations.
Yurii Bitko
23 january 2024, 14:44
Blog
For beginners
What is DKIM and How to Add a DKIM Record
Domain Keys Identified Mail (DKIM) protects your company from email spamming and phishing attempts. It provides a method for validating a domain name identity associated with a message through cryptographic authentication.
Valeriia Klymenko
19 january 2024, 09:28
Blog
For beginners
How to Get Your Own Email Domain for Free?
Here’s how to get an (almost) free domain to create a professional email address and make your small business look more presentable.
Denys Romanov
16 january 2024, 06:51
Blog
For experts
What is Email Archiving? Solutions & How It Works
Email archiving is storing email messages outside an email server and indexing them for future search and retrieval. This article discusses the basic principles, best practices and some popular solutions.
Valeriia Klymenko
12 january 2024, 14:22
Blog
For beginners
Save Email As PDF On Gmail, Outlook, and More
Learn how to save your email as a PDF file, whether you use Gmail, Outlook or iPhone. The guide includes screenshots and step-by-step instructions.
Yurii Bitko
09 january 2024, 12:23
Blog
For beginners
How to “Send on Behalf of” in Outlook?
When using Outlook for business communications, take advantage of the “Send on behalf of” feature. The ability to send emails on behalf of another person is a great tool for optimizing communications.
Denys Romanov
26 december 2023, 10:42
Blog
For beginners
What is a DNS MX record?
Learn about DNS MX records: what they are, why they are important, and how they work. Learn more about Mail Exchange (MX) records and how they are used in the email-sending process.
Alexey Kachalov
15 december 2023, 12:35
Blog
For beginners
Apology Email to Customers & Clients – How to Write an Apology Email?
If you admit your mistake by sending an apology letter, you will establish a good relationship with the customer and gain their trust. Below are apology letter templates that will help you achieve this goal.
Valeriia Klymenko
01 december 2023, 09:46
Blog
For beginners
Best Gmail alternatives for all users
These Gmail alternatives approach email in slightly different ways. Choose the perfect email service for you and make the transition.
Yurii Bitko
29 november 2023, 15:19
Blog
For beginners
How to Turn Off Email Notifications: Step-by-step Guide
How to turn off email notifications on all devices and apps. Our article will help you effectively manage your inbox and reduce email stress
Valeriia Klymenko
27 november 2023, 13:57
Blog
For beginners
How to set up email forwarding
Automatic email forwarding can help you reduce the number of inboxes you check per day. Learn how to forward mail using Gmail, Outlook, Yahoo and others.
Yurii Bitko
20 november 2023, 14:16
Blog
For beginners
How To Choose the Best Font for Email?
Want to improve the quality of your professional or marketing emails? Good-looking fonts are what makes an email design engaging. Learn all about the best font for emails in this guide.
Alexey Kachalov
16 november 2023, 11:26
Blog
For beginners
Best Email Signature Examples
How to make a professional email signature? Here are the best email signature examples that you can use in your email communications
Valeriia Klymenko
13 november 2023, 07:45
Blog
For beginners
How to Send Mass Email Campaigns in Outlook: Step-by-Step Guide
Learn how to send bulk emails using Outlook and why you may have to opt for an alternative.
Alexey Kachalov
25 october 2023, 14:38
Blog
For experts
Email Security: Common Issues and Best Practices
Everything you need to know about email security and how to make your email server protected from the most common threats.
Valeriia Klymenko
18 october 2023, 15:12
Blog
For beginners
What Is DMARC in Email?
DMARC is an email validation system designed to protect a company’s email domain from being used for email spoofing and phishing scams. Learn why a DMARC record is important and how it can improve your campaign's email delivery and avoid spam folders
Yurii Bitko
13 october 2023, 12:27
Blog
For beginners
What is SPF (Sender Policy Framework)?
SPF (Sender Policy Framework) is an email authentication system that allows you to determine which mail servers are allowed to deliver email messages for a specific domain.
Vitalii Piddubnyi
12 october 2023, 10:59
Blog
For experts
How to Calculate Email Open Rate
What are email open rates? And how do you calculate them? In this article, we'll share a simple way and why it's important to know your email open rate.
Yurii Bitko
04 october 2023, 14:00
Blog
For experts
Email Obfuscation: Which Methods are the Best?
Learn the ways to obfuscate your email address, hiding it from spammers. Does email obfuscation really work? Different approaches to email obfuscation.
Alexey Kachalov
20 september 2023, 09:20
Blog
For beginners
What is Email Bounce Rate and How to Keep It Low?
In our article, you will learn what the email bounce rate means, how you can reduce this rate and its impact on your marketing campaigns
Valeriia Klymenko
15 september 2023, 13:08
Blog
For beginners
Why is Gmail Blocking My Emails and What To Do About It
Learn why Gmail may be blocking your email, and how to fix the problem and improve your email deliverability.
Yurii Bitko
12 september 2023, 08:48
Blog
For experts
How to Write Better Emails with ChatGPT
Learn how to use ChatGPT, an AI-powered language model, to generate more effective and professional emails. Learn all essential tips and prompts.
Vitalii Piddubnyi
11 september 2023, 12:52
Blog
For beginners
B2B vs. B2C Email Marketing: How Do They Differ?
What's the difference between B2C and B2B email marketing? Buyer behavior, length of the buying cycle, content - learn the differences and use them more effectively. Read about it in our article.
Valeriia Klymenko
06 september 2023, 14:56
Blog
For experts
How To Reduce Spam Complaint Rate | UniOne
When sending emails to contacts, you may sometimes receive spam complaints. These complaints can harm your sender reputation and put your customer relations in danger.
Yurii Bitko
01 september 2023, 13:44
Blog
For beginners
Email Delivery Failure: Why Didn’t Customers Receive Your Email?
Avoid email delivery failures by learning about their most common causes. Tips on how to deal with delivery failures, bounces and other issues.
Yurii Bitko
30 august 2023, 14:29
Blog
For beginners
How to Write a Congratulations Email for a Promotion
Learn more about sending promotion emails to your staff: boss, manager, etc. Examples and templates from UniOne.
Valeriia Klymenko
24 august 2023, 09:29
Blog
For beginners
What Is STARTTLS and How Does It Work?
Learn about the StartTLS, SSL, and TL protocols with Unione. What is the difference between these email security protocols and how to use them for security?
Valeriia Klymenko
24 august 2023, 08:22
Blog
For beginners
IP Warming: What Is It and Why You Need It
IP warm-up is how you establish a reputation for a new IP or an IP that hasn't been used for some time. Read about its best practices and why it's important.
Valeriia Klymenko
24 august 2023, 08:12
Blog
For beginners
How to Use Email Marketing to Grow Your Business
How could you use email marketing to grow your business? Check out this UniOne's guide to make the most of your email marketing campaigns and strategy.
Valeriia Klymenko
23 august 2023, 08:58
Blog
For beginners
Best Email Solution For Sending OTPs
How to choose an email solution for sending OTPs
Yurii Bitko
19 july 2023, 15:06
Blog
For beginners
One-Time Passwords: Authentication And More
More Than Just Authentication: 14 Ways To Use One-Time Passwords
Alexey Kachalov
19 july 2023, 13:56
Blog
For beginners
World’s Best Authentication Practices: One-Time Password (OTP)
World's best authentication practices: One-Time Password (OTP)
Yurii Bitko
19 july 2023, 11:51
Blog
For beginners
Smart Host – What Is It?
Smart Host is a server between an email sender’s and recipient’s servers. Read about SMTP smart host service and how it helps with email deliverability.
Alexey Kachalov
05 may 2023, 12:24
Blog
For beginners
REST API: How It Works, Its History, Benefits, and Common Challenges
REST API is an application programming interface. It conforms to the constraints of REST architectural style and allows for interaction with RESTful web services.
Valeriia Klymenko
27 april 2023, 17:15
Blog
For beginners
6 Ways Email Marketing Software Can Help Businesses Easily Reach the Right Leads
Reaching the right leads is very important for developing a business. In this article, we will show you 6 ways to do it through email marketing software.
Yurii Bitko
17 march 2023, 09:43
Blog
For beginners
UniOne 2022: Novelties for Your Email Marketing
In 2022, UniOne has become even more comfortable and feature-rich. Read the article for a summary.
Vitalii Piddubnyi
20 february 2023, 17:50
Blog
For beginners
Commercial and Transactional Emails: the Differences
What are the differences between transactional and marketing emails? Let's find out...
Alexey Kachalov
14 february 2023, 15:52
Blog
For beginners
Examples of Notification Emails and Best Practices
Best notification email examples to get you inspired. Best practices and ready-to-use templates. Everything you need to start improving your notification emails right away.
Valeriia Klymenko
09 february 2023, 10:30
Blog
For beginners
Email Whitelist: What Is It Good For and Why Do You Need It
What is an ISP email whitelist and why you need to be whitelisted.
Denys Romanov
07 february 2023, 10:05
Blog
For beginners
Not Getting Blacklisted: Why Is It Important?
Blacklist is a real-time list that identifies IP addresses and domains that are known to send spam. Click to read more about what email blacklists are and how to avoid getting blacklisted.
Yurii Bitko
01 february 2023, 10:04
Blog
For beginners
How To Create an Email Newsletter – Templates, Design, Ideas
Email Newsletter is one of the methods for marketing your business. Read about creating a newsletter with good examples and best practices.
Alexey Kachalov
31 january 2023, 22:18
Blog
For beginners
Spam Traps: What to Do First and Not Get Trapped
Spam traps can cause low sender reputation and deliverability rate. Read more to find out how to avoid them.
Yurii Bitko
02 january 2023, 10:00
Blog
For beginners
Case Study: How to Increase the Conversion Rates by Choosing the Right Solutions
In this article you will find out how to Increase the Conversion Rates.
Alexey Kachalov
21 december 2022, 09:00