A Hostinger secure connection for outgoing emails is the encrypted communication channel your email client uses to send messages through Hostinger's outgoing mail server (usually smtp.hostinger.com). It protects your login credentials and email content from being intercepted while in transit. This connection uses either SSL (Secure Sockets Layer) or TLS (Transport Layer Security) encryption, and you must enable it in your email client settings for it to work.
If you use a third-party email client like Outlook, Thunderbird, or Apple Mail, Hostinger requires you to select "SSL/TLS" or "STARTTLS" as the connection security method. Without this, Hostinger's server will reject your outgoing email. The exact port depends on the encryption type: port 465 for SSL/TLS, or port 587 for STARTTLS.
This article covers everything you need to know about Hostinger's secure outgoing email connection, including how to set it up, which plans support it, and common mistakes to avoid.
Quick Summary
| Detail | Value |
|---|---|
| Short answer | A secure connection encrypts outgoing emails sent through Hostinger's SMTP server using SSL/TLS, preventing interception. |
| Applies to | All Hostinger plans that include email hosting (Business, Cloud Startup, VPS, and dedicated plans; also available with paid email add-ons on shared hosting). |
| Best for | Anyone sending emails from a custom domain via a third-party email client (Outlook, Thunderbird, Gmail's SMTP relay, etc.). |
| Watch out for | If you use Hostinger's webmail or the hPanel built-in email client, the secure connection is handled automatically. Manual configuration is only needed for external clients. |
What Is Hostinger's Secure Connection for Outgoing Emails, Explained
The Basics of Outgoing Email Security
When you send an email, your message travels from your device to your email provider's server, then to the recipient's server. Without encryption, anyone on the same network could read the contents. Hostinger's secure connection wraps your email in an encrypted tunnel so only the destination server can decrypt it.
The technical term for the outgoing server is SMTP (Simple Mail Transfer Protocol). Hostinger's SMTP server address is smtp.hostinger.com. The "secure connection" refers to the encryption protocol used when your email client connects to that server.
Hostinger supports two main methods:
- SSL/TLS on port 465, The connection is encrypted from the moment your client connects to the server. This is the most common method for email clients like Outlook and Apple Mail.
- STARTTLS on port 587, The connection starts unencrypted, then upgrades to TLS after the initial handshake. Many email clients and servers prefer this for compatibility.
Both methods are secure. The choice depends on what your email client supports. Hostinger's documentation confirms that port 465 with SSL/TLS is the recommended setting for most users.
How It Works in Practice
- You configure your email client (Outlook, Thunderbird, etc.) with the following settings:
, Incoming server:
imap.hostinger.com(IMAP) orpop.hostinger.com(POP3)
, Outgoing server (SMTP): smtp.hostinger.com
, Port: 465 (SSL/TLS) or 587 (STARTTLS)
, Authentication: Required, use your full email address and password.
- When you hit send, your client connects to
smtp.hostinger.comon the specified port. - If using port 465, the connection immediately negotiates an SSL/TLS session. The server presents its digital certificate, your client verifies it, and an encrypted tunnel is established.
- Your client then sends your login credentials. The server authenticates you.
- The email is transmitted through the encrypted tunnel to Hostinger's outgoing mail server.
- Hostinger's server then relays the email to the recipient's mail server (usually over a separate encrypted connection, but that's beyond your control).
The key point: everything between your computer and Hostinger's server is encrypted. Your email provider (Hostinger) cannot see the contents in plaintext during transit, and neither can anyone on your local network.
What Determines Whether You Need to Configure It
You only need to manually configure a secure connection if you are using a third-party email client (Outlook, Thunderbird, Apple Mail, Gmail's "Send mail as" feature, etc.). Hostinger's own webmail interface (provided through hPanel or Roundcube) already uses HTTPS encryption for the web session, so outgoing emails sent through webmail are inherently secure.
If you use the Hostinger Business Email add-on (available on shared hosting plans), the same SMTP settings apply. The Business Email package includes IMAP, POP3, and SMTP access, and you must enable SSL/TLS in your client.
Caveat: If you are on Hostinger's shared hosting without a dedicated email plan, you may still have access to a limited number of free email accounts (usually 1-100 depending on the plan). These accounts also use the same SMTP server and require the same secure connection settings. The only difference is the storage limit and the number of accounts allowed.
Which Plans Include Secure Outgoing Email
Every Hostinger plan that includes email hosting supports secure outgoing connections. Here is a breakdown:
| Plan Type | Email Included? | Secure SMTP Access? |
|---|---|---|
| Shared hosting (incl. Premium, Business) | 1-100 email accounts (depending on plan) | Yes |
| Cloud Startup | 100 email accounts | Yes |
| VPS and Dedicated | No built-in email; you can install your own mail server or use a third-party service | N/A for Hostinger-provided email |
| Business Email add-on (standalone) | Yes, unlimited accounts | Yes |
| WordPress hosting (managed) | Same as shared hosting for the underlying plan | Yes |
Note: If you use a VPS or dedicated server, you are responsible for setting up your own mail server. In that case, you would configure secure connections on your own server, not through Hostinger's SMTP. This article is about Hostinger's own outgoing email service.
Authentication and Security Protocols
Hostinger's secure connection also requires SMTP authentication. Your email client must send your full email address and password before it can relay any outgoing messages. This prevents unauthorized use of the server (spam).
The authentication is always sent inside the encrypted tunnel, so your password is never exposed in plaintext.
Hostinger also supports SPF, DKIM, and DMARC records to authenticate your emails and improve deliverability. These are DNS records you add to your domain. They are not part of the connection itself, but they work together with the secure connection to ensure your emails are not flagged as spam.
You can set these up in hPanel under "Email → Email Deliverability."
Timing and Availability Note
Secure SMTP (SSL/TLS) has been available on Hostinger for many years. As of 2025, it is enabled by default for all email accounts. There is no extra cost.
You do not need to enable it in Hostinger's control panel; it is always active on the server side. The only configuration you need to perform is on your email client.
Hostinger's email service is operational 24/7 with a 99.9% uptime guarantee for the email servers. However, individual email clients can fail if you misconfigure the secure connection settings. This is the most common source of "cannot send emails" support tickets.
Common Mix-Ups or Things People Get Wrong
Mix-up: "I need to enable SSL in hPanel first."
Reality: There is no toggle in Hostinger's control panel to turn on secure outgoing email. The server always accepts encrypted connections on ports 465 and 587. If you cannot send emails, the problem is almost always in your email client settings.
Check that you are using the correct port and encryption method.
Mix-up: "Port 25 is the standard SMTP port, so I should use it."
Reality: Port 25 is the default SMTP port, but it is often blocked by internet service providers (ISPs) and is not encrypted. Hostinger does not support outgoing email on port 25 for security reasons. Port 25 is used only for incoming mail (receiving).
For outgoing email, you must use port 465 or 587 with encryption.
Mix-up: "I can copy the settings from my old hosting provider."
Reality: Each email provider uses different SMTP server addresses and ports. Hostinger's SMTP server is smtp.hostinger.com. If you copy settings from another host (e.g., smtp.office365.com or smtp.gmail.com), your client will try to connect to the wrong server.
Always use the exact Hostinger settings.
Mix-up: "Secure connection means my email is encrypted end-to-end."
Reality: The secure connection only encrypts the segment between your device and Hostinger's outgoing server. Once the email leaves Hostinger's server, it travels over the internet to the recipient's mail server. That leg may or may not be encrypted, depending on the receiving server's configuration.
Your email content is also stored in plaintext on the recipient's server. For true end-to-end encryption, you would need a tool like PGP or S/MIME.
What This Means for You
If you plan to send emails from your custom domain using a desktop email client or a mobile app, you must configure the secure connection correctly. The steps are straightforward:
- Open your email client's account settings.
- Enter the outgoing server as
smtp.hostinger.com. - Set the port to 465.
- Choose "SSL/TLS" or "STARTTLS" as the encryption method.
- Make sure "Require authentication" is checked.
- Enter your full email address and password.
If you use webmail only, you can skip this entirely. The secure connection is automatic.
For most users, the main issue is getting the port and encryption right. Hostinger's own help center provides step-by-step guides for different email clients. If you still cannot send, double-check that you are using the correct email address and password.
Also, verify that your domain's DNS records are pointing to Hostinger's mail servers (MX records).
If you are already leaning toward signing up for Hostinger, the Business Email add-on or the Business shared hosting plan gives you full access to secure outgoing email with plenty of storage. You can get started with a coupon to reduce the initial cost.
Check the latest Hostinger deals and coupons here.
Frequently Asked Questions
How do I find my Hostinger SMTP server settings?
Open your Hostinger hPanel, go to "Email → Email Accounts," and click "Settings" next to your email address. The outgoing mail server is smtp.hostinger.com, port 465 with SSL/TLS, or port 587 with STARTTLS. Your full email address is the username.
Does Hostinger support TLS 1.3 for outgoing email?
Hostinger's SMTP server supports TLS 1.2 and 1.3. Most modern email clients will negotiate the highest version available. If you are using an old client that only supports TLS 1.0, you may need to upgrade your client.
Can I use Hostinger's SMTP server without a Hostinger email account?
No. You must have a Hostinger email account (or a Hostinger hosting plan that includes email) to use smtp.hostinger.com. The server authenticates against your email account credentials.
You cannot use it as a generic relay for other addresses.
What should I do if my email client says "authentication failed"?
First, confirm you typed the full email address (including @yourdomain.com) as the username. Second, check that your password is correct. Third, verify that you have not exceeded the outgoing email limit (Hostinger's shared hosting plans have a daily limit, typically 300-500 emails per hour).
If you are using app passwords, generate one from hPanel under "Email → Email Accounts → App Passwords."
Is Hostinger's secure outgoing email compatible with Gmail's "Send mail as" feature?
Yes. In Gmail's settings, go to "Accounts and Import → Send mail as → Add another email address." Use smtp.hostinger.com as the SMTP server, port 465, SSL, and your full email address as the username. Gmail will send a verification email to that address.
After verification, you can send emails from your domain through Gmail's interface.
Why does my email get blocked by the recipient's server even though I use a secure connection?
A secure connection only protects the transmission. The recipient's server may block your email due to poor sender reputation, missing SPF/DKIM records, or because your IP address is on a blocklist. Set up SPF, DKIM, and DMARC records for your domain in Hostinger's DNS zone.
Also, avoid sending bulk emails from a shared hosting account; use a dedicated SMTP service like SendGrid or Mailgun for large volumes.
What is the difference between IMAP and POP3 regarding outgoing email?
IMAP and POP3 are incoming protocols (how you receive emails). They do not affect outgoing email settings. Whether you use IMAP or POP3, the outgoing SMTP settings remain the same: smtp.hostinger.com with encryption.
Closing Thoughts
Hostinger's secure connection for outgoing emails is a straightforward feature: it encrypts your messages between your email client and Hostinger's servers using SSL/TLS. You only need to configure it once in your email client. The server settings are the same across all Hostinger plans that include email.
If you run into trouble, check your client's port and encryption settings first, then verify your login credentials.
If you are shopping for a new hosting provider and want reliable email hosting with hassle-free secure SMTP, Hostinger is a solid choice. Their plans are affordable, and the setup process is well-documented. To get the best price, use a coupon code at checkout.
Grab your Hostinger coupon here.
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