E-Mail | The Happy Hosting Knowledgebase

Why can’t I send emails from my iPhone/Android?

Some devices treat SMTP login fields as optional. They’re not. Make sure you enter both username (full email-address) and password, and enable password authentication.

My emails aren’t being delivered - why?

Every server gets a fresh IPv4 address. If the IP was on a blacklist before, we request removal right away. It may still take a few days for all networks to update. Also, a newly purchased domain might need to build up some reputation first before the firewalls of the big dogs allow it to play with them. Our mail setup (SPF, DKIM, DMARC, MX) gives you a near-perfect spam score. But providers like Google or Microsoft may still filter mails into spam at first. Usually, things settle within a few weeks. You can send an email to https://www.mail-tester.com/ to check for any issues with the setup.

Do I have to use the built-in mail server or Postmark/Mailjet?

No. You can also use your own SMTP providers (Amazon SES, Google, Mailgun, SendGrid, etc.) or use a completely external solution (like Microsoft Exchange or Google Mail, which we obviously do not recommend). If you do so, send us an Email to support@happyhosting.co with the required DNS entries and we'll set it up for you. But: our internal mail server automatically sets up SPF, DKIM, and DMARC for you - giving your mails a perfect spam score. For a detailed overview of the available options and differences of the outgoing mail-solution, check out this article.

Can I use sub-addressing and tags with my email?

Yes. Emails sent to user+tag@domain.tld go straight to your mailbox. Great for signups on different sites (user+amazon@domain.tld). Tags work for aliases too.

How can I set up a catch-all address?

In your dashboard, go to Email > Settings > Catch-all, select a user, and save. All undeliverable emails will be redirected there.

How do I create a mailing list?

In your admin panel: Email > Domain > Mailing Lists → click New Mailing List, give it a name, add recipients, and save. Note: These lists are for internal accounts only - not public subscribe/unsubscribe lists.

What are the mail server settings?

You’ll find them in your dashboard under Email → Settings, there's an icon at the top icon where it says "Configuring Email Clients", but here’s the standard setup: - IMAP (for receiving mail): - Server: my.your-domain.tld - Port: 993 - Security: TLS - Username/password: your email + password - SMTP (for sending mail): - Server: my.your-domain.tld - Port: 587 - Security: STARTTLS - Username/password: your email + password - Sieve (for mail filters): - Server: my.your-domain.tld - Port: 4190 - Security: TLS - Username/password: your email + password POP3 is off by default but can be enabled per mailbox.

How do I create an email alias?

Want another address besides username@your-domain.tld? Easy: 1. Go to your dashboard → Email > Domain > Mailboxes. 2. Edit the user, add the alias, save. Depending on the Webmail, you can then set it up there as well (this is for Snappy Mail): - Log into webmail (e.g. https://mail.your-domain.tld). - Bottom left → Settings (gear icon). - Go to Accounts → Add Identity. - Enter alias address + display name, click Add. Drag your alias to the top to make it the default sender.

Which Email Service Should I Choose?

We offer three ways to send your transactional emails: the built-in mail server, Postmark, and Mailjet. Each has its own advantages and trade-offs: Built-in Mail Server - Server location: Same server your apps are hosted on (full control) - GDPR: Strongest control, no third-party handling - Data retention: Only what you configure (e.g. storage, backups) - Attachment limits: You decide when setting up the mail server - Upside: Full independence, data never leaves your server - Downside: Deliverability can depend on IP reputation and DNS setup (SPF, DKIM, DMARC) Postmark - Server location: US-based (with GDPR compliance options) - GDPR: Supports GDPR with retention controls - Data retention: 45 days by default - Attachment limits: Up to 10 MB per email (including attachments) - Upside: Excellent deliverability for transactional emails, automated reputation handling - Downside: Data processed outside the EU (potential GDPR consideration), retention longer by default unless adjusted Mailjet - Server location: EU-based (France & Germany) - GDPR: Fully GDPR-aligned, ISO 27001/27701 certified - Data retention: Retention policies vary by plan, less flexible than Postmark - Attachment limits: Up to 15 MB per email (via SMTP/API) - Upside: EU jurisdiction, slightly bigger attachment size, good mix of transactional + marketing features - Downside: Deliverability not as strong as Postmark for critical transactional emails TL;DR: - Choose Built-in if you want maximum independence and control - Choose Postmark if you want top-tier deliverability and don’t mind US servers - Choose Mailjet if you prefer EU hosting and slightly larger attachments