Guides

Email signatures, explained properly.

How to set one up in each client, why they break, and what to do when one signature is not enough.

Guide · Outlook
How to add an email signature in Outlook
Steps for new Outlook, Outlook on the web, classic Outlook, Outlook for Mac and the mobile apps, plus fixes for images, spacing and replies.
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Guide · Gmail
How to add an email signature in Gmail
Add a signature in Gmail, set defaults for new mail and replies, keep more than one, and fix the logo that will not show. Mobile app notes included.
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Guide · HTML
HTML email signature best practices
The rules that keep an HTML signature rendering the same in Outlook, Gmail, Apple Mail and on phones: tables, inline styles, hosted images, fonts and size.
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Guide · Apple Mail
How to add an email signature in Apple Mail
Add an HTML signature with a logo to Mail on a Mac, what the iPhone and iPad apps can and cannot do, and fixes for the font, image and iCloud sync problems.
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Guide · Mobile
How to set up an email signature on your phone
Where the signature setting is in the Outlook app, the Gmail app, Mail on iPhone and Samsung Email, what each can show, and how to get one signature everywhere.
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Guide · Thunderbird
How to add an email signature in Thunderbird
Paste HTML source or attach a file, set it per identity, keep the logo showing, and fix the dashes, reply placement and missing signature on replies.
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Guide · Yahoo Mail
How to add an email signature in Yahoo Mail
Turn on and paste a signature in Yahoo Mail on the web, set one in the Yahoo Mail app, and fix logos that vanish and formatting the editor drops.
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Guide · Proton Mail
How to add an email signature in Proton Mail
Set a formatted signature in Proton Mail on the web and a mobile one in the apps, add a logo by link, and what changes on the free plan or with Bridge.
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Guide · Zoho Mail
How to add an email signature in Zoho Mail
Create a signature in Zoho Mail, attach it to an address, choose where it sits on replies, upload a logo, and what admins can and cannot set for everyone.
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Guide · iCloud Mail
How to add an email signature in iCloud Mail
Set a signature for iCloud Mail on icloud.com, what the web editor keeps, and how to get a formatted signature with a logo on a Mac, iPhone or iPad instead.
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