Apple Mail · iPhone · Preheader
iPhone Mail preview text length checker (~98 characters)
About 99 characters over two lines on an iPhone 14. Modeled as a pixel box calibrated to the character count seen on the device, so wide and narrow letters are handled.
The iPhone Mail preview text limit at a glance
- Limit
- about 98 characters (716px over 2 lines)
- How it’s counted
- By rendered width in the system font at 15px — wide letters use more room.
- What happens when it’s too long
- Cut on screen with “…”
- Where the number comes from
- Measured on devices
How to write for it
- Use the preheader to finish the subject’s thought, not repeat it.
FAQ
iPhone Mail preview text: questions
What is the iPhone Mail preview text limit?
About 98 characters (716px over 2 lines). About 99 characters over two lines on an iPhone 14. Modeled as a pixel box calibrated to the character count seen on the device, so wide and narrow letters are handled.
What happens if my preheader is too long?
Apple Mail · iPhone still shows it, but cuts it with “…” — anything past the cut is invisible to most people.
Why does the character count change?
This screen cuts by width, not characters. Wide letters like W and M use up to four times the room of i or l, so two texts of the same length can be cut in different places.
Can I check many at once?
Yes — upload a CSV or Excel file on the Bulk page and Truncly checks and fixes every row, then gives the file back with fixes added.