How To Create A Professional Email Address With A Custom Domain

Whether you’re running a small business, setting up a startup, or working as a freelancer, it’s essential to have a professional email address. Relying on a generic free address can inadvertently signal that you’re an amateur or, worse, a scammer. 

Why do I need a professional email address?

A professional email address with a custom domain not only looks more polished, it builds trust, reduces the chances of your messages being flagged as spam, and offers a layer of security and privacy that free consumer accounts can’t match.

Brand consistency: An email address that aligns with your business name is easier for customers to remember and reinforces your branding. 

Credibility: A business email account makes you look substantial and trustworthy (even if you’re just one person doing it all). 

Security and compliance: Using a privacy-focused email provider with encryption can protect sensitive business communications and help you stay compliant with privacy regulations. 

Work/life separation: A dedicated business email address will make it easier to create some work-life balance, especially if you’re a small business owner. 

How to create a professional email address

Follow these steps to create a business email that works no matter how big (or small) your company is. 

Step 1: Decide whether you need a custom domain

There are two options when it comes to creating a business email address: you can use a provider domain or create a custom domain. 

Provider domain: Uses the provider’s domain, such as jane.lee@proton.me  

Custom domain: Uses a domain you own, such as jane@leegroup.com

A custom domain gives your email address a more professional look. If you’re building a business and looking to develop brand credibility, you should register a custom domain. If you’re a freelancer, creating a professional-sounding email address using a provider domain might be sufficient. 

Tip: A custom domain is a unique web address you can use for both your website and a custom email address.

Step 2: Register your custom domain

If you decide to use a custom domain, you’ll need to register it before you can set up your email address. If you haven’t already, the easiest way to do this is with a domain registrar.

Step 3: Choose an email provider

Choose an email provider based on your business needs. Consider practical things like how many email accounts you need and whether it will be possible to scale up as needed, as well as important privacy features like end-to-end encryption.

Set up a custom email domain with Proton Mail

Step 4: Pick your email address format

Whether you’re using a custom domain or a provider domain, choose an email format that’s easy to remember and looks professional.

If you’re using a custom domain, you can choose whichever format works best for you. If you’re using a provider domain, you may have to play around with the format to find something that’s available. Some common options include: 

Custom domain + names

Format	Example
firstname.lastname@customdomain.com	jane.lee@leegroup.com
firstname@customdomain.com	jane@leegroup.com
initiallastname@customdomain.com	jlee@leegroup.com

Custom domain + categories

Format	Example
sales@customdomain.com	sales@leegroup.com
support@customdomain.com	support@leegroup.com
hello@customdomain.com	hello@leegroup.com

Provider domain

Format	Example
firstname.lastname@providerdomain.com	jane.lee@proton.me
firstname.initial.lastname@providerdomain.com	jane.c.lee@proton.me
initiallastname@providerdomain.com	jlee@proton.me
businessname@providerdomain.com	leegroup@proton.me

Tip: To look more professional using a provider domain, try to avoid using numbers (especially your birth year), and instead play around with periods or underscores to land on a unique combination. 

Step 5: Create your account

Sign in to your email provider and connect it to your custom domain. Steps for this will vary depending on which email provider you’ve selected. 

Step by step instructions for using a custom domain with Proton Mail

Tips for creating a professional email address

Do

• Use a custom domain if possible
• Use a privacy-first email provider
• Say your email address out loud before committing 

Don’t

• Make your email address longer than necessary
• Use nicknames or jokes in your email address
• Use numbers as they may set off spam filters

Why encryption matters for business email

Standard email providers often scan your messages for advertising or data mining. With end-to-end encryption, only you and your recipients can read your emails — no third party, not even your provider, has access.

Proton Mail for Business takes this further by combining easy-to-use encrypted email and calendar with additional features like Proton Sentinel.

While encryption secures your message content, Sentinel actively identifies and blocks attackers trying to break into your account — an essential layer of defense, considering over 90% of cyberattacks begin with email.