Join our agency partner program for access to exclusive resources and referral benefits.


How does Flywheel protect email?

Updated on August 31st, 2021

Flywheel uses some of the web’s most trusted email infrastructure providers to handle the email sent by your sites. We work in tandem with these providers to ensure email deliverability and prevent valid messages from ending up in someone’s spam folder.

Because mail is routed through our partner services, emails are not sent from your server’s IP address. Rather, they are sent from a pool of IP addresses hosted by our providers, which our operations team actively monitors for performance and reputation.

Due to the shared nature of these email IP addresses, it is unlikely but still possible that they can end up on spam blocklists, which may temporarily hinder mail deliverability from your site. If that happens, our team is notified and intervenes.

Spam filtering and email integrity

Proactive Malware Scan
All outgoing mail from your sites passes through a spam filtering system that looks for key signs of malicious activity before it’s ever sent on to our partner email servers. These include malicious links, spoofed FROM or CC addresses, and more.

Additionally, we set daily email limits for each site to ensure that they aren’t sending out massive spam campaigns. A highly unusual spike in emails in a short period of time will automatically trigger a temporary shutdown on email sending from the site. Our agents will then investigate to see if the outgoing mail is indeed suspicious.

Flywheel’s built-in layers of site security already provide a baseline level of protection as well by preventing many of the popular attack methods employed by malware authors. You can read more about Flywheel’s security measures here.


If you expect a spike in email, or are having trouble with site emails being sent, be sure to contact Flywheel Support as soon as possible. We’ll be happy to work with you to make sure things continue running as smoothly as possible.

Recommended security steps

Protect Your Forms

Malware authors love unsecured contact and comment forms. If you’ve set up email notifications on your site for new form entries or comments, it’s possible that some spam links or suspicious data could be headed from your site to your inbox. For that reason, we highly recommend the use of CAPTCHA fields to make submitters prove that they are, in fact, not robots.

Another additional method is employing a hidden honeypot field that automated bots will complete, but actual human traffic will not. Many popular WordPress form-builders offer a honeypot functionality as a core feature or as an add-on service.

Set up an external mail service for your site

If sending a high volume of automated emails from inside WordPress is a core function of your site, you might want to look into dedicated 3rd-party solutions for site mail. Flywheel recommends both Mailchimp (for email campaigns) and Sendgrid for external mail delivery.

An email host dedicated to sending mail for your site will be less susceptible to email blocklists. Additionally, email providers often have a dashboard where various metrics and reporting can be observed, providing insight into your campaigns.

Was this article helpful?

Getting Started

New to Flywheel? Start here, we've got all the information you'll need to get started and launch your first site!

View all

Account Management

Learn all about managing your Flywheel user account, Teams and integrations.

View all


Everything about billing, invoices and payments can be found here.

View all


Flywheel hosting plans include a ton of great features. Learn about how to get a free SSL certificate, set up a staging site, and more!

View all

Platform Info

All the server and setting info you'll need to help you get the most out of your Flywheel hosting plan!

View all

Site Management

Tips and tricks for managing your sites on Flywheel, including going live, troubleshooting issues and migrating or cloning sites.

View all

Growth Suite

Learn more about Growth Suite, our all-in-one solution for freelancers and agencies to grow more quickly and predictably.

View all

Managed Plugin Updates

Learn more about Managed Plugin Updates, and how you can keep your sites up to date, and extra safe.

View all


Flywheel help

Help is just a click away! Log into the Flywheel dashboard to instantly chat with an expert, open a ticket, or follow along with in-depth documentation. We happily offer support 24 hours a day, 7 days a week, 365 days a year!

Log in

Try Flywheel today

Launch your next WordPress site in minutes.

 Free migrations  24/7/365 support  14‑day demo sites