--- title: "How to add an email signature in Gmail, Outlook, Apple Mail and more" url: https://signatoro.com/docs/install-signature description: "How to add your email signature in Gmail, Outlook, Apple Mail, Yahoo, Proton, Zoho, Thunderbird and more mail apps, and for AI agents that send mail for you." published: 2026-09-15 updated: 2026-10-08 --- # How to add an email signature in Gmail, Outlook, Apple Mail and more How to add your email signature in Gmail, Outlook, Apple Mail, Yahoo, Proton, Zoho, Thunderbird and more mail apps, and for AI agents that send mail for you. Build your signature once on the [generator](https://signatoro.com/), then open the guide for whatever you send mail from. Each guide is a handful of plain, numbered steps written in words, which stay correct when a vendor reskins a settings menu. For what to put in the signature, start with [how to make an email signature](https://signatoro.com/docs/how-to-make-an-email-signature). Want a review badge or a booking button first? See [adding a review badge](https://signatoro.com/docs/add-google-reviews-to-email-signature) and [adding a Calendly link](https://signatoro.com/docs/add-calendly-link-to-email-signature). To track clicks on its links, see [short links and UTM tracking](https://signatoro.com/docs/short-links-utm-email-signature). ## Email signature guides for each mail app - [Gmail](https://signatoro.com/docs/install-signature/gmail), on the computer and in the app - [Outlook - the five kinds, and which is yours](https://signatoro.com/docs/install-signature/outlook) - [New Outlook and Outlook on the web](https://signatoro.com/docs/install-signature/outlook-new) - [Classic Outlook on Windows](https://signatoro.com/docs/install-signature/outlook-classic) - [Outlook for Mac](https://signatoro.com/docs/install-signature/outlook-mac) - [The Outlook app on iPhone and Android](https://signatoro.com/docs/install-signature/outlook-mobile) - [Apple Mail on Mac](https://signatoro.com/docs/install-signature/apple-mail) - [Mail on iPhone and iPad](https://signatoro.com/docs/install-signature/ios-mail) - [Zoho Mail](https://signatoro.com/docs/install-signature/zoho-mail) - [An AI agent or assistant that sends mail for you](https://signatoro.com/docs/install-signature/agent) - [Claude](https://signatoro.com/docs/install-signature/agent/claude), [ChatGPT](https://signatoro.com/docs/install-signature/agent/chatgpt), [Grok](https://signatoro.com/docs/install-signature/agent/grok), [Grok Bot](https://signatoro.com/docs/install-signature/agent/grok-bot), [Gemini](https://signatoro.com/docs/install-signature/agent/gemini), [Copilot](https://signatoro.com/docs/install-signature/agent/copilot) - [Signatoro's MCP server](https://signatoro.com/docs/install-signature/agent/mcp) - [AI browser agents](https://signatoro.com/docs/install-signature/agent/browser-agents) - [n8n, Zapier and Make](https://signatoro.com/docs/install-signature/agent/automations) - [Nylas](https://signatoro.com/docs/install-signature/agent/nylas), [Gmail API](https://signatoro.com/docs/install-signature/agent/gmail-api), [Google Apps Script](https://signatoro.com/docs/install-signature/agent/apps-script), [Microsoft Graph](https://signatoro.com/docs/install-signature/agent/microsoft-graph), [Power Automate](https://signatoro.com/docs/install-signature/agent/power-automate), [Gmail MCP and Outlook MCP](https://signatoro.com/docs/install-signature/agent/gmail-outlook-mcp), [Base44](https://signatoro.com/docs/install-signature/agent/base44) ### Private and independent mail - [Proton Mail](https://signatoro.com/docs/install-signature/proton-mail) - [Tuta](https://signatoro.com/docs/install-signature/tuta) - [Fastmail](https://signatoro.com/docs/install-signature/fastmail) - [mailbox.org](https://signatoro.com/docs/install-signature/mailbox-org) ### Yahoo, AOL and iCloud - [Yahoo Mail](https://signatoro.com/docs/install-signature/yahoo-mail) - [AOL Mail](https://signatoro.com/docs/install-signature/aol-mail) - [iCloud Mail on the web](https://signatoro.com/docs/install-signature/icloud-mail) ### Email that came with your domain or hosting - [Titan Email](https://signatoro.com/docs/install-signature/titan-email), sold by Hostinger, Bluehost and others - [GoDaddy email](https://signatoro.com/docs/install-signature/godaddy-email) - [IONOS Mail](https://signatoro.com/docs/install-signature/ionos-mail) - [Rackspace Email](https://signatoro.com/docs/install-signature/rackspace-email) - [Roundcube webmail](https://signatoro.com/docs/install-signature/roundcube), the webmail on many cPanel hosts - [Zimbra](https://signatoro.com/docs/install-signature/zimbra) ### Other mail apps - [Thunderbird](https://signatoro.com/docs/install-signature/thunderbird) - [eM Client](https://signatoro.com/docs/install-signature/em-client) - [Mailbird](https://signatoro.com/docs/install-signature/mailbird) - [Spark](https://signatoro.com/docs/install-signature/spark) - [Superhuman](https://signatoro.com/docs/install-signature/superhuman) - [HEY](https://signatoro.com/docs/install-signature/hey) - [Samsung Email](https://signatoro.com/docs/install-signature/samsung-email), the mail app on Galaxy phones ### Shared inboxes, CRM and help desks - [Front](https://signatoro.com/docs/install-signature/front), for teams sharing an inbox - [Missive](https://signatoro.com/docs/install-signature/missive) - [Pipedrive](https://signatoro.com/docs/install-signature/pipedrive) - [Zendesk agent signature](https://signatoro.com/docs/install-signature/zendesk) - [Freshdesk agent signature](https://signatoro.com/docs/install-signature/freshdesk) - [Help Scout](https://signatoro.com/docs/install-signature/help-scout) ## Written for agents too An AI assistant can follow any Signatoro install guide on someone's behalf. If you are an agent installing a signature for someone, open the guide for their mail client, copy the signature from the generator with "Copy signature" (formatted) or "Copy HTML" (source), and carry out the numbered steps in order. If you draft and send the mail yourself, through an API, Signatoro's [MCP server](https://signatoro.com/docs/install-signature/agent/mcp) or [an automation](https://signatoro.com/docs/install-signature/agent/automations), the [agent guide](https://signatoro.com/docs/install-signature/agent) shows how to fetch the signature and add it to each email.