What are SMTP Relays?

SMTP Relays are the virtual equivalent of postal delivery services. SMTP stands for Simple Mail Transfer Protocol, and it involves the standard processes that allow you to send emails via the internet.

If you’re looking to send bulk marketing or transactional emails for your business, the SMTP relay service solves this problem by delivering the outgoing mail to a mail server.

Without network hiccups or other server technicalities, emails deliver instantly. However, in some cases, it might take a few days. Read on to know how SMTP relay service can be useful to your business.

How Does SMTP Relay Work?

When you send an email via an Email Service Provider (ESP), it connects and communicates to the configured SMTP server, after which it processes the message.

This process is similar to the traditional mail service.

When posting a mail, you address it to the receiver and fill in your return address. The local post office uses this information to pinpoint the closest post office to the recipient and sends your letter there.

Similarly, when you send a mail via an ESP, it uses information such as your email address, the recipient’s email address (i.e., destination address), your IP address, and timestamp to locate the SMTP server nearest to the receiver.

That way, the SMTP server only delivers outgoing email but does not accept incoming email — that’s the job of POP3 and IMAP.

What is Mail Relay?

Mail Relay is the email transfer process from one server to another. “Relaying” is when a server accepts the delivered email from another server.

However, it’s not “relaying” when you send an email to someone using the same domain as you, as there won’t be a second email server involved.

Think of it as sending a local mail to someone in the same town as you. Your local post office does the entire delivery process without involving a third-party.

Although mail relays involve other technicalities in transferring these emails between email servers, this process sums up the general idea of how mail relay works.

What is SMTP Relay Service?

SMTP relay service is a managed service that helps your business send out transactional or bulk emails by routing emails through a trusted third party.

These large or automated email batches may include newsletters, password resets, and delivery confirmations. 

When the SMTP relay service receives a message from your local server, it automatically queues it up for delivery. 

If the delivery is successful, it gets to the recipient’s address. If it isn’t, it bounces, generates a “Non-Delivery Report’(NDR), and returns it to you.

This delivery process could take anything from seconds to hours or even days. When this happens, it means the main receiving SMTP server is having issues with email delivery.

ESPs restrict the number of SMTP relays it conducts in a day to reduce spam. Your business may exceed this daily limit when sending important bulk emails — this is where we come in. 

We help you deliver transactional and bulk emails to your clients after checking your recipient’s domain reputation, spam traps, and email server configurations.

Why is SMTP Relay Service Important?

The SMTP relay service is excellent when you run an enterprise. 

While you may require little effort on your part to send single emails to a few clients, you’ll need an ESP that offers SMTP relays to send bulk email newsletters efficiently to clients.

SMTP relays are also essential to avoid labeling your bulk emails as spam. Peer-to-peer servers congest your bandwidth and disrupt email delivery rates. 

Your need for customized email services increases as your business grows. 

This includes:

  • the demand for extra bandwidth
  • Updating
  • maintaining your mail server to avoid clogging and spam. 

Using Scala Hosting email services is a productive and cost-effective way to manage automated and outbound mails without disrupting business activities and email communication. 

Our services are scalable and can help with automated and batch email management, email delivery issues, and avoiding blacklists.

Start Using SMTP Relays

Now you know SMTP relays are necessary when sending bulk messages. However, that’s not the only time you can use it. 

You can use SMTP relays when you:

  • Need to send emails to clients and subscribers from your mobile app or website.
  • Want to improve your email flow and deliverability.
  • Have hardware such as fax machines, scanners, or IoT devices, and need an easy way to send emails through them.

We provide you fully managed email hosting services with various email protocols like POP3, IMAP, and SMTP to ensure maximum email security.

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Working in the web hosting industry for over 13 years, Rado has inevitably got some insight into the industry. A digital marketer by education, Rado is always putting himself in the client's shoes, trying to see what's best for THEM first. A man of the fine detail, you can often find him spending 10+ minutes wondering over a missing comma or slightly skewed design.