How Short Links Supercharge Your Email Marketing Campaigns
Long URLs break in email clients, hurt deliverability, and make tracking a mess. Here's how short links solve all three — and what best practices actually look like.
Email is still the highest-ROI marketing channel for most businesses. According to Litmus research on email ROI, the average email marketing ROI sits around $36 for every dollar spent — but that number assumes your links actually work, your emails actually land in inboxes, and you actually know which clicks drove results. Short links are a quiet but meaningful part of making all three happen.
Why Email Clients Break Long URLs
Email rendering is notoriously inconsistent. Gmail, Outlook, Apple Mail, and the dozens of mobile clients each handle HTML and plain text differently. Long URLs — especially UTM-tagged ones — are a common casualty.
Plain Text Email URL Problems
In plain-text emails (which are more common than marketers think), URLs don’t become hyperlinks. The full URL is visible and clickable only if the client renders it correctly, and many wrap long URLs mid-string, breaking them entirely. A 200-character UTM-tagged URL split across two lines becomes two useless strings of text.
HTML Email Truncation Issues
Even in HTML email, clients like Outlook have been known to truncate link href attributes over a certain length. The result: your reader clicks and goes nowhere, or goes somewhere wrong.
Short links eliminate this class of problem. A link like bah.is/spring-email is short enough to survive any wrapping, truncation, or rendering edge case your email client throws at it.
Short Links and Email Deliverability
Here’s a nuance that trips up a lot of email marketers: not all short link domains are treated equally by spam filters.
Generic short link domains — bit.ly, tinyurl.com, and similar services — are heavily used by spammers because they’re free, anonymous, and easy to generate at scale. As a result, spam filters have learned to treat links on these domains with suspicion. Using a generic short link in a cold outreach campaign or a newsletter is a deliverability risk you’re probably not aware of. This is one of the hidden costs of free URL shorteners that rarely gets discussed.
Branded short links flip this dynamic. If your short link domain is mail.yourco.com or go.yoursite.com, spam filters evaluate that domain on your domain’s reputation — the same reputation your sending domain has built. If you’ve been a good sender, your short link domain benefits from that.
This is one of the least-discussed advantages of branded links: they don’t introduce a third-party domain with an unknown (or actively bad) reputation into your emails. Learn how to set up a custom short domain in under twenty minutes.
A/B Testing Email Campaigns with Short Links
Short links are a practical tool for email A/B testing beyond just subject lines. Create two versions of a campaign link with different slugs — bah.is/offer-a and bah.is/offer-b — and split your list. Your link analytics will tell you which version drove more clicks, independent of your ESP’s built-in reporting.
This approach is useful when you want to test:
- CTA copy — “Shop the sale” vs. “See what’s new” pointing to the same destination
- Placement — a link in the first paragraph vs. the bottom of the email
- Visual format — a button vs. a plain text hyperlink
- Offer framing — the same product with different promotional angles
Because each short link is tracked independently, you get clean click data per variant without needing sophisticated ESP split-testing features.
Tracking Email Campaign Performance with Two-Layer Analytics
The best setup for email link tracking uses two layers:
Layer 1: bah.is analytics. Every click on your short link is logged — timestamp, geographic location, device type, browser, referrer. This data lives in your link analytics dashboard and is accessible whether or not your ESP captures it.
Layer 2: UTM parameters on the destination URL. The destination your short link points to should include UTM parameters, so your web analytics platform (Google Analytics, Plausible, Fathom, etc.) attributes the traffic correctly.
A link like bah.is/spring-email pointing to yoursite.com/landing?utm_source=newsletter&utm_medium=email&utm_campaign=spring26 gives you:
- Click counts and audience data from bah.is
- Full attribution in your web analytics, connected to conversions
Neither layer alone gives you the full picture. Together, they let you trace the path from email send to on-site action.
Best Practices for Email Link CTAs
A few patterns that consistently improve email click-through rates. Avoid common link shortening mistakes to maximize performance:
Make the CTA text descriptive, not generic. “Click here” and “Learn more” are weak. “See the full collection,” “Grab your spot,” and “Read the guide” tell readers what they’re getting and create forward momentum.
One primary CTA per email. Emails with a single clear call to action consistently outperform emails that offer six different things to click. If you need to include multiple links, make the hierarchy obvious — one primary, a few secondary in plain text.
Test link format. Buttons have higher click rates in most contexts, but not all. Plain-text-style links often perform better in personal-feeling emails, cold outreach, and transactional messages. Test both.
Don’t bury the link. If your email requires scrolling to find the CTA, you’ve lost a large share of potential clicks before they happen. Put a link early, repeat it at the bottom.
Short, clean slugs for plain-text emails. In any email that might render in plain text, your link will be visible. bah.is/spring-offer looks intentional. bah.is/x7k2m9 looks like a tracking pixel with ambitions.
Email marketing is a precision game. Every percentage point of click-through rate has a compounding effect on revenue. Short links are a small lever — but they’re a lever you can pull without any technical complexity, starting today.