Ten layouts, every one checked against what actually breaks in email. Pick one, set your brand once, and everybody on the team gets a personal link to copy theirs.
The hard part was never making one signature. It is the second year — when someone changes job title, the brand shifts, or a campaign needs to run across forty inboxes at once.
Colours, type, spacing, logo and photo treatment live on the organisation. Change one and every signature follows.
Each person gets a durable link with no account attached. They fill in their own details; you never retype a phone number.
The banner lives at a permanent URL. Swap the campaign behind it and installed signatures update within the hour.