How to set up professional email on your own domain
Get an address like [email protected] in five steps: choose a mail host, publish DNS records, create mailboxes and connect your phone and inbox.
The email blog
Straight answers on SPF, DKIM, DMARC, deliverability, transactional email and running email on your own domain. Written by the team that runs Mailions.
Latest guides
What Is an SPF Record? How It Works and How to Fix It
An SPF record lists which servers may send email for your domain. Learn the syntax, the 10-lookup limit, common mistakes and how to publish one correctly.
Why Are My Emails Going to Spam? 12 Causes and Fixes
Emails landing in spam usually trace back to authentication, reputation, content or list quality. Work through these 12 causes and fixes to find yours.
Gmail and Yahoo Sender Requirements: What to Do
Gmail and Yahoo require authentication, low spam rates and easy unsubscribe from bulk senders. See what the rules mean for small senders and how to comply.
How to send OTP emails that arrive fast and stay secure
How long a one-time code should live, how to store and rate-limit it, and how to write the email so people sign in within seconds.
What Is DKIM and How Does It Work?
DKIM adds a cryptographic signature to every email so receivers can prove it came from your domain and was not altered. Learn how it works and how to set it up.
How to send email from Node.js with an HTTP API
Send verification codes, receipts and notifications from your own domain in Node.js with one authenticated request. No packages, with timeouts and retries.
How to Warm Up a New Domain for Email Sending
A new domain has no sending reputation. Follow this gradual warm-up plan to build trust with Gmail, Outlook and Yahoo without landing in spam on day one.
What Is DMARC? A Plain-English Guide to Email Policy
DMARC tells receivers what to do when an email fails SPF and DKIM, and sends you reports. Learn how it works, the policy options and how to publish a record.
Email authentication
All 9 postsSPF, DKIM and DMARC explained in plain English: what each record does, how to publish it, and how to fix the errors people hit most.
- What Is an SPF Record? How It Works and How to Fix It
- What Is DKIM and How Does It Work?
- What Is DMARC? A Plain-English Guide to Email Policy
- SPF "Too Many DNS Lookups": How to Fix the 10-Lookup Limit
- How to Roll Out DMARC Safely: none, quarantine, reject
- How to Read DMARC Aggregate Reports (With an Example)
- SPF Softfail (~all) vs Hardfail (-all): Which Should You Use?
- DKIM Selectors and Key Rotation Explained
- How to Check SPF, DKIM and DMARC for Any Domain
Deliverability
All 4 postsWhy email lands in spam, what Gmail and Yahoo expect from senders, and how to build a sending reputation that holds up.
Developers and API
All 4 postsSend transactional email from Node.js, PHP, Python, Laravel and WordPress: OTP codes, verification and password-reset emails done safely.
Business email
All 3 postsSet up professional email on your own domain, compare it with Gmail and Google Workspace, and decide what you actually need.
Setup guides
All 3 postsDNS records, IMAP and SMTP settings, ports and phone setup, explained step by step.
Put it into practice on your own domain
Add your domain, publish the DNS records we generate, and start sending or receiving. Tell us what you need and we will set up a trial.