You might wonder why it has taken Microsoft so long to give Outlook the ability to store signature settings in the cloud. Outlook Signatures in the System Registry It would be even better if Outlook mobile could share the same signature, but progress generally happens one step at a time. It makes sense for Outlook to move along the same path, and even more sense if the two clients could share the same signatures. I don’t think ISVs have much to worry about because it seems that this is exactly what OWA does today by storing its signatures as mailbox properties that can be manipulated with the Set-MailboxMessageConfiguration cmdlet. There’s no news if a similar feature will be available for Outlook clients connected to on-premises Exchange servers. Apparently, this innovation is due to drop in March 2020, but Microsoft is unlikely to hit that date given that no preview is available yet. Traditionally, Microsoft left email signature management to ISVs, but Microsoft 365 roadmap item 60371 caused some concern for ISVs by promising that Outlook for Windows will store signature settings in the cloud and will be accessible when using Outlook on any computer. Signatures can be inserted using add-ins to clients or applied by an agent after the message is sent (a technique that runs into difficulties with encrypted messages). The management of email signatures for Exchange is a big business with many ISVs offering autosignature products to allow companies dictate the exact format of email signatures applied to all outbound messages.

Email databases the world over are cluttered with company logos and other graphics inserted into messages, many of which are in messages sent between people in the same company who really don’t need to see their company logo.

Often signatures contain some company-mandated text such as a legal disclaimer (useless in law in most countries) or a pretty graphic.

Usually an email signature contains information such as the sender’s name, title, address, phone number, and so on. Email signatures are text containing information about a user that clients like Outlook insert into outbound messages to tell the recipient something about the sender.

Outlook 2016 signature not working