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Certfly

Ensure Email Marketing Custom Domain SSL for Deliverability

Your email marketing deliverability depends on secure sending practices. Monitor custom sending and tracking domains to prevent SSL expirations that can flag your emails as insecure, impacting open rates and brand reputation.

The problem

Email marketing relies heavily on trust and deliverability, both of which are severely impacted by insecure custom domains. If your custom sending domain or the tracking domains used for link opens and clicks have an expired SSL certificate, email clients and corporate firewalls are more likely to flag your messages as suspicious or outright block them. This leads to significantly lower open rates, higher bounce rates, and a damaged sender reputation within platforms like Mailchimp, Klaviyo, or HubSpot, directly hurting your campaign ROI.

The subtle but critical role of SSL on email-related domains is often overlooked until deliverability metrics plummet. An expired certificate on a link within your email could lead recipients to a "Not Secure" warning page, instantly eroding trust and making them less likely to engage with future communications. This not only wastes the effort put into crafting compelling campaigns but also signals to ISPs that your brand might be less legitimate, making it harder to reach inboxes even for subsequent, properly secured emails.

How Certfly solves it

1
Monitor custom sending and tracking domains for SSL validity, safeguarding email deliverability and sender reputation.
2
Receive alerts for expiring SSL certificates on your marketing domains, preventing "Not Secure" warnings for recipients.
3
Protect your email marketing ROI by ensuring all campaign links are secure and trustworthy for subscribers.

Concrete example

Email Infrastructure Status:
send.yourbrand.com: Active (Expires: 2025-09-01)
track.emailcampaign.net: Warning! (Expires: 2024-03-25)
bounce.mailserver.org: Expired! (Expired: 2024-01-10)
Critical for DMARC & deliverability!

Ready to try Certfly?

Watch your TLS certs so you don't have to.

Frequently asked questions

How does SSL certificate status affect my email deliverability and sender reputation?
An expired SSL on your custom sending or tracking domains can cause emails to be flagged as insecure by ISPs and email clients, leading to lower deliverability, higher spam scores, and a damaged sender reputation.
Can Certfly monitor subdomains used for email tracking or dedicated IPs?
Yes, Certfly monitors any public-facing hostname, including subdomains specifically used for email tracking, sending, or bounce management, ensuring all aspects of your email infrastructure are secure.
What kind of lead time will I get before an email domain's SSL expires?
Certfly sends customizable alerts, typically 30, 14, and 7 days before expiration, giving your team ample time to renew certificates and prevent any disruption to your email marketing efforts.

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