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.

Check on all 38 screens

iPhone Mail preview text

Apple Mail · iPhone
Gets cut
‹ MailboxesInbox
Your brand9:41
Your subject line
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shows 90 of 125 charsMeasured on devices

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.