iPhone Mail subject
Apple Mail · iPhoneYour brand9:41
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Apple Mail · iPhone · Subject line
iPhone Mail subject length checker (~49 characters)
About 48 characters show 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.
Gets cut
The iPhone Mail subject limit at a glance
- Limit
- about 49 characters (354px)
- 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
- Front-load the offer: the end of the line is the first thing to go.
FAQ
iPhone Mail subject: questions
What is the iPhone Mail subject limit?
About 49 characters (354px). About 48 characters show 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 subject line 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.