Add to calendar in an email signature
An email signature is quiet, permanent advertising that every recipient sees. For anyone running a recurring public session, it is a free channel that most people leave empty.
What works in a signature
One link, one line, no images. Signature editors in Gmail and Outlook strip most markup, and an image-based button will be blocked by default in half of the clients that receive it.
Weekly office hours, Thursdays 15:00 CET → Add to calendarPoint it at the shareable event page rather than a specific provider. The recipient picks their own calendar on the page, and you only have one URL to maintain.
Use a recurring event
A signature link outlives any single date. Generate it as a recurring event with no end, and it stays correct indefinitely. A link to a fixed date is stale the day after and quietly makes you look inattentive.
Adding it in Gmail and Outlook
- Gmail. Settings, See all settings, Signature. Type the text, select it, then use the link button. Pasting raw HTML does not work here.
- Outlook on the web. Settings, Mail, Compose and reply. Same approach.
- Outlook desktop. The signature editor accepts pasted HTML, so you can paste the snippet directly.
- Apple Mail. Paste into the signature box with formatting kept, then untick "Always match my default message font".