How to Add an Email Signature on iPhone (iOS Mail App)

Why iPhone Email Signatures Matter

With over 1 billion active iPhones worldwide, millions of professional emails are sent from these devices every day. The default "Sent from my iPhone" signature, while informative, doesn't project professionalism. Whether you're closing a business deal, following up with a client, or networking with colleagues, a custom email signature makes every message look polished and intentional.

A professional iPhone email signature helps you:

• Maintain consistent branding across all devices
• Provide essential contact information in every email
• Project professionalism even when emailing on the go
• Distinguish between work and personal email accounts
• Remove the impersonal default signature

Setting Up a Basic Email Signature on iPhone

The iOS Mail app makes it simple to replace the default signature with your own. Follow these steps to create your custom email signature in under a minute.

Setting Different Signatures for Multiple Email Accounts

If you have multiple email accounts on your iPhone (work, personal, side business), you likely want different signatures for each. iOS makes this easy with the "Per Account" feature. This allows you to maintain a professional signature for your work email while using a casual one for personal correspondence.

What to Include in Your iPhone Email Signature

Mobile email signatures should be concise due to screen space limitations and the context of mobile communication. Recipients understand you're sending from a phone, so a lengthy signature can seem excessive. Focus on the essentials:

Essential Elements

• Full name — Your professional name
• Job title — Your position or role
• Company name — Where you work
• Phone number — Mobile or direct line

Optional Additions

• Website — Company or portfolio URL
• LinkedIn — Professional profile link
• Company tagline — Brief slogan if space allows

Sample iPhone Signature Formats

Here are some practical signature formats optimized for mobile:

John Smith
Marketing Director | Acme Corp
(555) 123-4567 | acmecorp.com

John Smith
Marketing Director, Acme Corp
555-123-4567

John Smith | Acme Corp
linkedin.com/in/johnsmith
acmecorp.com

Understanding iOS Mail Signature Limitations

Before setting up your signature, it's important to understand what the native iOS Mail app can and cannot do. This knowledge will help you set realistic expectations and choose the right approach for your needs.

What You Can Do

• Add multiple lines of text
• Include website URLs (automatically linkified)
• Use different signatures per email account
• Include phone numbers (automatically callable)
• Use basic symbols and characters

What You Cannot Do (Natively)

• Add images or logos
• Use formatted text (bold, colors, fonts)
• Insert HTML signatures
• Add social media icons
• Include clickable buttons

Getting Rich Signatures on iPhone

If you need a signature with images, formatted text, or professional design on your iPhone, you have several alternative options:

Option 1: Use a Third-Party Email App

Apps like Microsoft Outlook, Spark, Edison Mail, and Gmail support HTML signatures with images and formatting. You can create a signature using a generator and paste it into these apps.

• Outlook — Full HTML signature support with images
• Spark — Rich text signatures with some customization
• Gmail app — Syncs with your Gmail web signature

Option 2: Set Signature on Desktop, Use on Mobile

If you use Gmail, Outlook.com, or another webmail service, set up your HTML signature on the web version. When you send emails from your iPhone through these services (even using the Mail app), the signature from the server settings may be used instead of the iOS signature.

Option 3: Use a Signature Management Service

Enterprise solutions like Exclaimer or CodeTwo inject signatures server-side, ensuring consistent branding across all devices regardless of the email client used.

Troubleshooting Common Signature Issues

Running into problems with your iPhone email signature? Here are solutions to the most common issues users encounter:

Signature Not Syncing with Other Apple Devices

iOS, iPadOS, and macOS email signatures do not sync automatically between devices. Each device maintains its own signature settings. If you want consistent signatures across your iPhone, iPad, and Mac, you'll need to set them up individually on each device.

Special Characters Displaying Incorrectly

If symbols or special characters in your signature appear broken or as question marks, stick to standard ASCII characters. Avoid emojis in professional signatures as they may not display correctly on all email clients your recipients use.

Email Signature Tips for iPhone Users

• Keep it short — 3-4 lines maximum for mobile
• Include only essential contact information
• Make phone numbers easy to tap and call
• Test your signature by sending an email to yourself
• Use consistent formatting across all accounts
• Avoid legal disclaimers on mobile (keep them for desktop)
• Update your signature when contact info changes

Signatures on iPad

The iPad uses the same iOS (now iPadOS) Mail app, so the signature setup process is identical. Go to Settings > Mail > Signature, and follow the same steps outlined above. The Per Account feature works the same way, allowing different signatures for each email account.

If you use your iPad for more business-oriented tasks, consider a slightly more detailed signature than your iPhone since the larger screen provides more context for longer emails.

Removing or Disabling Your iPhone Signature

Want to remove your signature entirely? Here's how:

1. Go to Settings > Mail > Signature
2. Delete all text in the signature field(s)
3. Leave the field completely empty

Your emails will now be sent without any automatic signature appended. You can always add a signature manually when composing specific emails if needed.

Create Your Signature Design First

While iOS limits you to plain text, planning your signature's content and layout beforehand ensures a polished result. Even without formatting, proper spacing and organization make a difference in how professional your signature appears.

Use our free Email Signature Generator to design and preview your signature, then copy the text content for use on your iPhone. This approach helps you visualize different layouts and ensure you include all the essential information before entering it into your iOS settings.