Let's get the honest part out of the way first: the iPhone Mail app doesn't support a formatted signature. No logo, no color, no bold name — just plain text, no matter how good the signature looks in the builder. Most guides skip this and walk you through 'pasting your signature' as if it'll show up looking the way it does everywhere else. It won't. This guide covers the real setup — plain text, done properly — and a genuine workaround for the times you actually want the full signature to go out from your phone.
Why your logo won't show up here
iOS Mail's Signature screen, tucked into Settings, is a plain text field. It was built for a line or two of sign-off text, not a formatted signature with a logo, colors, and a linked button. This isn't a bug and it isn't specific to Signoff Craft — every formatted signature from every builder hits the same wall on this particular screen.
The practical result: whatever you set here shows up as unstyled text on every email you send from the Mail app on your iPhone or iPad, whether you typed it fresh or pasted it from somewhere else.
What to paste here (and what not to)
In Signoff Craft, use Copy signature — not Copy HTML source. The field on iPhone only accepts plain text, so pasting the rich version gives you the readable name, role, and contact details without any formatting. Pasting the raw HTML source instead pastes literal code — things like <table> and style="..." showing up as visible text — which looks broken and is worse than no signature at all.
Trim it down before you paste. Pick your name, role, and maybe one phone number or link. A signature designed to look good with a logo and three link buttons turns into a run-on wall of text once the formatting is stripped away.
Step-by-step: setting your iPhone signature
Open Settings on your iPhone or iPad.
Depending on your iOS version, tap Mail directly, or tap Apps first and then Mail — Apple moved Mail's settings under Apps in recent iOS versions, so check both spots if you don't see it right away.
Tap Signature, listed under the Composing section.
Choose All Accounts if you want the same sign-off everywhere, or Per Account if you use more than one email address and want a different signature for each.
Tap into the text field. Select and delete the default "Sent from my iPhone" text — it's still sitting there until you remove it.
Paste your trimmed, plain-text signature (Copy signature from the builder, not the HTML source).
There's no separate Save button here — leave the Signature screen and it's already applied.
If you actually want the full signature on mobile
There's a real workaround, and it's honestly not much trouble: instead of the Signature setting, paste your full rich signature directly into the body of a new email when you're composing from your phone. The compose window in Mail accepts a formatted paste — logo, colors, and links included — even though the Signature setting doesn't.
It's manual — you're pasting it into each new email rather than having it appear automatically — which is the trade-off. For someone sending a handful of important emails a day from their phone, that's a few extra seconds for a signature that actually looks like your brand. Worth testing on your own device first; paste behavior can shift slightly between iOS versions.
If it's still not behaving
- Signature shows raw code like <table> or style="...": you pasted Copy HTML source into a plain-text field. Delete it and paste Copy signature instead.
- Signature looks right in Settings but the wrong one shows up when you send: check whether you're set to Per Account and are editing the wrong address.
- Links aren't clickable: iOS Mail auto-detects full URLs (https://...) in plain-text signatures reasonably well, but anything meant to be a styled button won't be clickable as a button — it'll just read as text. That's expected here, not a bug.
- Nothing changed after you left the screen: close and reopen the Mail app once — iOS occasionally needs the app to reload before a settings change shows up in a fresh compose window.
Plain text, and that's fine
iPhone Mail's signature field was never going to carry your full brand signature — that's an Apple limitation, not a setup mistake you can fix. Get the plain-text version right in a couple of minutes, and if the full formatted signature matters for a particular email, paste it straight into the message body instead.
Create your signature
Put this into practice — pick a template, add your details and copy a polished signature into your inbox in minutes.