At MailerSend, we take security seriously. In addition to building a robust sending infrastructure based on the latest and greatest security protocols, we’re committed to bringing you the features that will allow you to take your account security into your own hands.
With the release of our IP allowlist feature, you can now easily restrict the IPs that can access and send emails from your account. Let’s jump right in and get to know IP allowlisting, and how you can set it up in minutes from the MailerSend app.
What is IP allowlisting?
IP allowlisting is a measure you can use to ensure no other server has unauthorized access to your account. Sometimes known as IP whitelisting, it’s a straightforward yet reliable way to make your online accounts and activity more secure. All it involves is adding approved IP addresses or an IP address range to your allowlist.
Doing so will mean that only the IPs added to the allowlist will be able to access and use your account and other features of the service. For example, with MailerSend, this would be your API and SMTP credentials. Even if your account is compromised by a malicious actor with access to your username and password, they won’t be able to send emails from your account because their IP won’t be present on your allowlist.
Ready to make your account more secure?
Add your IPs to the allowlist now, it only takes a minute!
How does IP allowlisting work?
Let’s take a look at a scenario that shows how IP allowlisting could save the day when it comes to your MailerSend account.
And that’s how this super simple feature that takes minutes to set up can help secure your business’ email. Even if a malicious actor gains access to the account, the IP allowlist will prevent them from being able to use it. Let Bob's boo-boo be a lesson to us all. 😉
The benefits of IP allowlisting
We’re only human! IP allowlisting puts a safeguard in place when human errors happen. While it shouldn’t be used as the be-all and end-all of your account security, the IP allowlist will:
1. Prevent unauthorized access to your API and SMTP credentials.
2. Give you greater control over the security of your account.
3. Allow for secure remote access for users and servers.
4. Protect your sender reputation from attackers’ spammy sending practices.
5. Protect your business reputation by stopping attackers from sending out unsolicited emails under your company’s name and domain.
6. Help you avoid any legal or financial penalties as a result of the potential damage.
Who is IP allowlisting for?
If you want to protect your business and your sender reputation from the ramifications of a security breach (who doesn’t?) then IP allowlisting is for you. In MailerSend, all Premium accounts have access to our IP allowlist feature and we recommend that everyone makes use of it to boost their account’s security.
Unfortunately, security breaches can and do happen. So why not make use of the features on offer to ensure that your account is as secure as possible? Not to mention it’s super easy and quick to add an IP address to the allowlist. There’s really no excuse!
Secure your account now
What are you waiting for? Add your IPs to the allowlist to instantly make your account more secure.
What about static vs. dynamic IPs?
When you add IP addresses to your allowlist, the IPs being used must be static. If your server’s hosting provider has a dynamic IP, this could result in your server not being allowed to send emails, as when the IP address changes, it won’t match up with the IPs on the allowlist.
It’s important to remember that the IP addresses that will be making the API and SMTP requests will belong to your local testing environment or hosting provider on production. You’ll want to make sure that these are static IP addresses—your hosting provider may have dynamic IPs, so keep this in mind.
Alternatively, ask your hosting provider for the list of their dynamic IPs so you add them all.
How to add IPs to your allowlist in MailerSend
We want all of our users to have the most secure experience possible, and it couldn’t be easier to add an IP address to your allowlist. Got your authorized IPs at the ready? This only takes a minute!
1. From the MailerSend dashboard, go to Settings and select the IP allowlist tab.
2. Click Add IP address and go ahead and give your allowed IP a recognizable name.
3. Enter your IP address manually or click Add current IP and click Save.
And that’s it! In just a few clicks you’ve secured your account from unauthorized use.
For more information, check out our knowledge base article on how to whitelist IPs.
Remember, there are no excuses when it comes to security
Prevention is always the best medicine. The few minutes it takes to identify which IP addresses you want to allow and add them to your IP allowlist will be well worth it if your account becomes compromised. The time, effort and money it can take to fix such attacks can be devastating to a business, so do yourself a favor and set up IP allowlisting!
Do you have any other security tips for protecting your transactional messaging? Let us know in the comments.