Optimize Email Subject Lines for Higher Open Rates

Email subject lines have strict character limits - especially on mobile devices where only 30-40 characters show. Textrim removes filler words to make your subject lines punchy and effective without AI rewrites that sound generic.

The Mobile Email Problem

Desktop: Shows ~60 characters
Mobile (iPhone): Shows only ~30-40 characters
Gmail mobile: Shows ~35 characters

If your subject line is too long, the most important part gets cut off with "..." and your open rate plummets. Textrim helps you fit more meaning into fewer characters.

Before & After Examples

Example 1: Product Update Email

Before (78 characters)

We're really excited to actually announce some very important new features

Mobile preview: "We're really excited to actual..."

After (45 characters)

Excited to announce important new features

Mobile preview: "Excited to announce important new..."

✂️ Saved 33 characters (42%) - Full message visible on mobile!

Example 2: Cold Outreach

Before (92 characters)

I think we should probably discuss how we can actually help you grow your business this year

Mobile preview: "I think we should probably disc..."

After (51 characters)

Let's discuss how we can help grow your business

Mobile preview: "Let's discuss how we can help grow..."

✂️ Saved 41 characters (45%) - Clear value proposition on mobile!

Example 3: Newsletter

Before (71 characters)

Here are some really useful tips that we think you'll find very helpful

Mobile preview: "Here are some really useful tips..."

After (37 characters)

Useful tips you'll find helpful

Mobile preview: "Useful tips you'll find helpful"

✂️ Saved 34 characters (48%) - Entire subject visible on mobile!

Why Textrim for Email Marketing?

📱Mobile-First Optimization

70% of emails are opened on mobile. Textrim helps you fit your message in the limited preview space.

🎯Keep Your Brand Voice

Unlike AI subject line generators, Textrim preserves your exact wording and brand personality.

📊Improve Open Rates

Clear, concise subject lines get higher open rates. Remove filler to make every character count.

A/B Test Faster

Quickly create multiple variations of your subject line by removing different filler words.

Email Marketing Use Cases

  • Cold outreach: Make your value proposition clear in limited preview space
  • Newsletter campaigns: Optimize weekly/monthly newsletter subject lines for mobile
  • Product launches: Announce new features without wordy, generic AI-generated subjects
  • Sales emails: Get to the point faster with clear, benefit-driven subject lines
  • Transactional emails: Make order confirmations and receipts scannable on mobile

Ready to Boost Your Open Rates?

Start optimizing email subject lines in seconds

Frequently Asked Questions

What's the ideal email subject line length?

For mobile: 30-40 characters. For desktop: 50-60 characters. Textrim helps you hit these targets without losing your message.

Will this work for B2B cold emails?

Yes! B2B decision-makers check email on mobile too. Clear, concise subject lines show you respect their time.

Can I use this for email sequences?

Absolutely. Optimize each email in your drip campaign to maintain consistency while fitting mobile previews.