The Best Practices for Using Short Links in Email Marketing

The impulse is understandable. Why clutter your email with a long, ugly URL full of UTM parameters when a neat bit.ly link looks so much cleaner?

But this is one of those rare cases where the most intuitive solution can be actively harmful to your campaign. Using public URL shorteners in your mass email sends is a controversial practice, fraught with risks that can cripple your deliverability and tank your results.

This guide will explore the truth about using short links in email marketing. We’ll cover the perceived benefits, the major risks, and the best practices you should follow to ensure your links are helping, not hurting, your strategy.

Why Do Marketers Want to Shorten Links in Email?

Let’s start by acknowledging why this is such a common question. The reasons for wanting to use services like Bitly or TinyURL in an email campaign are generally well-intentioned.

1. Aesthetics and Simplicity: The primary driver is visual cleanliness. A long URL, especially one tagged with tracking parameters, can look intimidating and messy.
   • Long URL: https://www.yourstore.com/products/summer-sale?utm_source=email&utm_medium=newsletter&utm_campaign=july_promo
   • Short URL: bit.ly/SummerSale25 In a plain-text email, the shorter version is undeniably neater and less overwhelming for the reader.
2. Centralized Analytics: Marketers often use the same link across multiple channels—social media, ads, and email. Using a single short link for all of them seems like a smart way to consolidate click data in one dashboard (e.g., the Bitly dashboard), providing a single source of truth for a campaign’s performance.
3. Hiding UTM Parameters: UTM codes are essential for tracking campaign effectiveness in Google Analytics, but they make for notoriously long URLs. Shorteners provide a convenient way to “hide” this complexity from the end-user.

While these points seem valid on the surface, they overlook a critical component of email marketing: deliverability.

The Big Red Flag: Email Deliverability and Spam Filters

Here is the most important takeaway of this article: Using public URL shorteners can seriously damage your email deliverability.

Email Service Providers (ESPs) like Gmail, Outlook, and Yahoo are in a constant war against spam and phishing. To protect their users, they employ sophisticated spam filters that scrutinize every aspect of an incoming email, and one of the biggest red flags for these filters is link obfuscation.

Here’s why your shortened link is a liability:

• Association with Spammers: Spammers and phishers love public URL shorteners for the exact same reason marketers do: they mask the true destination of a link. Because these services are so frequently abused, the domains themselves (bit.ly, tinyurl.com, etc.) often end up on industry blacklists. If your email contains a link from a blacklisted domain, your message is highly likely to be flagged as spam or blocked entirely. You are, in effect, suffering from the bad reputation of others.
• Lack of Transparency: Spam filters want to see the destination URL to verify that it’s a safe and legitimate domain. When you hide it behind a shortener, you are essentially telling the filter, “I’m not going to show you where this link really goes.” This lack of transparency is inherently suspicious and causes your email’s spam score to rise.
• An Unnecessary Layer of Redirection: This is a crucial technical point that many marketers miss. Your Email Service Provider (like Mailchimp, ConvertKit, HubSpot, etc.) already shortens and wraps your links with its own tracking domain to measure click-through rates.

If you embed a Bitly link in your Mailchimp campaign, the following happens:

1. The user clicks the link.
2. They are first sent to Mailchimp’s tracking domain.
3. Mailchimp’s server redirects them to your Bitly link.
4. Bitly’s server then redirects them to the final destination URL.

This double redirection is redundant, can slightly slow down the user experience, and adds another potential point of failure. More importantly, it adds to the suspicion from spam filters.

The Right Way: A/B Testing & Tracking in Email

The good news is that all the benefits you seek from third-party shorteners are already provided by your ESP, but in a much safer and more effective way.

• Built-in Link Tracking: Your ESP’s dashboard is the best source for email analytics. It will tell you your open rate, click-through rate, and exactly which links in your email were clicked and by whom. This is far more integrated and accurate for email performance than a third-party tool.
• Automatic Link Rewriting: As mentioned, your ESP handles the “cloaking” of links for you. They use their own trusted tracking domains that are whitelisted and maintained to ensure high deliverability. You get the tracking without the risk.
• UTM Parameters Work Perfectly: Simply add your UTM parameters to the full destination URL before you put it in your email. Your ESP will wrap the entire long link with its tracking domain, and when the user clicks through, all the UTM data will be correctly passed to your Google Analytics account.

Best Practices for Links in Your Email Campaigns

So, what should you do instead? Follow these best practices for professional, effective, and deliverable emails.

1. Rule #1: Avoid Public URL Shorteners: Do not use links from services like Bitly, TinyURL, or other general-purpose shorteners in your mass email campaigns. The risk to your sender reputation isn’t worth it.
2. Always Use Descriptive Anchor Text: Instead of pasting a naked link (short or long), hyperlink descriptive text. This is better for readability, accessibility, and trust.
   • Don’t do this: To learn more, visit www.mystore.com/products/sale
   • Don’t do this: To learn more, <u>click here</u>.
   • Do this: <u>Explore our full summer collection</u> to find great deals.
3. Trust Your Email Service Provider: Let your ESP do the work it’s designed for. Use their built-in analytics to track clicks and engagement. It’s safer and more integrated.
4. The Exception: Branded Short Domains: There is one major exception to this rule: using a private, branded short domain. These are custom short URLs that are exclusive to your brand (e.g., nyti.ms for The New York Times, pep.si for Pepsi). Because you own the domain and control its reputation, it is not shared with spammers and is not a red flag for spam filters. This is an advanced strategy that builds brand trust, but it requires purchasing and configuring your own short domain.

Conclusion: Save Short Links for Social Media

While the intention to create clean, trackable links in your emails is correct, using public URL shorteners is the wrong way to achieve it. The potential for devastating your email deliverability and sender reputation far outweighs any perceived benefits. These tools introduce suspicion, associate your brand with spammers, and are made redundant by the superior, built-in features of your email service provider.

The verdict is clear: keep your full, descriptive URLs hyperlinked within your emails and trust your ESP to handle the tracking. Save your favorite public URL shorteners for the channels where they truly excel, like social media and SMS marketing.