Law firm email signature software for lawyer and attorney email signatures for the whole firm
One approved attorney signature for every mailbox in the firm. AutoSignature fills each lawyer's name, title and bar admissions from Microsoft 365 or Google Workspace, adds the right confidentiality and advertising disclaimer for each office, and keeps a record of every change.
Flat price per firm from $99 a month. Try the signature console on this page without an account.
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The short answer
Law firm email signature software stores one attorney signature template centrally, fills each lawyer's details from the firm's directory and writes the finished signature into every Outlook and Gmail mailbox, including phones. Partners approve the wording once, and nobody at the firm can drift from it. The part firms care about most is the disclaimer: the right confidentiality notice and attorney advertising label for each office, on every message, with a history of who changed what.
What a lawyer's email signature has to carry, and why it drifts
An attorney signature does more work than a normal business signature. It identifies who is responsible for the communication, where that person can practice, and how the recipient should treat what they just received. Those are exactly the lines that go stale first when every lawyer maintains their own.
Name, title and admissions
"Partner, Litigation. Admitted in NY and NJ." Admissions change when an associate passes a second bar or a lateral partner joins from another state. Pulled from the directory, the line updates when HR updates the record, not when the lawyer remembers.
Responsible attorney and contact
ABA Model Rule 7.2 expects communications about a lawyer's services to include the name and contact information of at least one lawyer or firm responsible for the content. A consistent signature with a direct line and office address covers that on every email that goes out.
Confidentiality notice
Not legally required, used almost universally. It flags privileged content and tells a misdirected recipient what to do. Firms want one approved wording, not twelve versions copied from old signatures and trimmed by whoever found it too long.
Attorney advertising label
New York, for example, requires "Attorney Advertising" on many emails that promote the firm, and some states want a bar number on advertising communications. That wording belongs on some groups and some messages, which is a rule, not something to trust to memory.
Certification and specialty claims
Under the Model Rules a lawyer should not state or imply certification as a specialist unless certified by an approved body. Central templates stop the "Tax Specialist" someone typed into their own signature three years ago from going out on every reply.
Staff who are not lawyers
Paralegals, legal assistants and billing staff need a signature that makes clear they are not attorneys. A separate template for the staff group removes any doubt, and it is applied by group membership, not by asking people to pick the right file.
Rules differ by state and change over time. AutoSignature applies the wording your firm's ethics or general counsel approves; it does not decide that wording for you.
Attorney email signature management built for how firms actually run
Disclaimers by office and group
Rules decide which notice goes where: the New York office gets the advertising label on marketing mail, the Texas office gets its own wording, staff get the non-attorney line. Set once, applied to every message.
Admissions from the directory
Name, title, practice group, admissions, direct dial and office come from Microsoft 365 or Google Workspace fields. Empty values collapse their own line instead of leaving a gap.
Visible in the sender's own Outlook
The signature is written into the mailbox, so the attorney sees exactly what the client will see, in the compose window and in Sent Items. Mail is not routed through our servers.
Short block on replies
The full signature goes on the first message and a compact one on replies, so a forty-message matter thread does not carry forty copies of the confidentiality notice.
Change history and rollback
Every template change is recorded with who made it and when, and any rollout can be rolled back in one click. Useful when the ethics partner asks what went out last quarter.
Marketing kept separate from IT
Your marketing director can schedule a client alert banner for one practice group. IT owns deployment. Neither can edit the other's part, and the disclaimer stays locked.
From one approved template to every attorney's mailbox
- 01
Connect the tenant
Your IT provider or administrator approves a scoped consent in Microsoft 365 or Google Workspace. Nothing is installed on laptops or phones.
- 02
Build the firm template
Logo, fonts, admissions line and disclaimers, previewed in Outlook, Gmail, Apple Mail and on a phone before anyone sees it.
- 03
Map groups to rules
Partners, associates, staff and each office get the template and the disclaimer rules that apply to them.
- 04
Deploy group by group
Start with one practice group, check it, then widen. New hires get the signature the day their account exists.
Which firms buy this, and what it replaces
Small law firms, 5 to 25 lawyers
Usually an office manager who emails the HTML around and an outside IT provider who fixes Outlook when it breaks. The Team plan, $99 a month for up to 25 mailboxes, replaces that loop with one template nobody has to paste.
Regional firms with several offices
Different states, different disclaimer wording, a marketing team that wants client alerts in the signature. The Business plan covers up to 150 mailboxes with disclaimer rules by office and scheduled banners.
Firms that merged or took on laterals
Two brands, two tenants, a new name on the door. Multiple brands and template sets in one account let you run both identities until the rebrand date, then switch every signature on the same morning.
Three ways law firms handle signatures, compared honestly
| What matters to a firm | Attorneys paste their own | Exchange mail flow rule | AutoSignature |
|---|---|---|---|
| Same approved wording on every email | Rarely, drifts within months | Yes, for the appended footer | Yes |
| Admissions filled per attorney | Typed by hand | Limited directory fields | Yes, from directory fields |
| Attorney sees the signature while writing | Yes | No, added after sending | Yes |
| Placement in a reply thread | Under the reply | At the very bottom, under the quoted thread | Under the reply, short block on replies |
| Different disclaimers by office | Depends on who remembers | Yes, with one rule per case | Yes, rules by office and group |
| Google Workspace firms | Yes | No | Yes |
| Change history | None | Admin audit log | Per template, with rollback |
| Cost | Staff time | Included in Microsoft 365 | From $99 a month per firm |
A mail flow rule is a sound choice if all you need is one legal footer on outbound mail, and it costs nothing extra. Firms move to managed signatures when they want the attorney to see the signature, the notice above the quoted thread rather than under it, and admissions filled per person. The trade-offs are covered in detail on the Exchange email signature management page.
Law firm email signature questions
What should a lawyer's email signature include?
A lawyer's email signature should include the attorney's full name, title, firm name, the states where the lawyer is admitted, a direct phone number, the office address and the firm website, followed by a confidentiality notice. Some states also expect an attorney advertising label on emails that promote the firm's services.
Keep social icons and quotes out of it. Every extra line is one more thing that goes out of date.
Should attorneys put their bar number in their email signature?
Most attorneys do not need a bar number in everyday client email, but some states, including California and Texas, require it in certain advertising communications. The safer firm-wide approach is to list admissions for every lawyer and add the bar number only to the templates your ethics counsel says need it.
Do law firms need a confidentiality disclaimer in emails?
No federal rule requires one, but nearly every US law firm uses a confidentiality notice because it signals privileged content and asks an unintended recipient to delete the message. It does not guarantee privilege on its own, so firms keep it short and apply it consistently rather than to some messages only.
Country and state variations are collected in our guide to email signature disclaimers by country.
Is an email signature considered attorney advertising?
An ordinary signature on a reply to an existing client is generally not treated as advertising. A signature carrying a promotional banner, or an email sent to prospective clients to win work, can be. That is why firms attach the advertising label and promotional banners by rule to specific groups and campaigns rather than to everything.
How do law firms manage email signatures?
Small firms often email attorneys an HTML template and hope everyone pastes it in. Firms with more than a handful of lawyers use email signature software that connects to Microsoft 365 or Google Workspace, fills each attorney's details from the directory and deploys one approved template to every mailbox.
What is the best email signature software for law firms?
The best email signature software for a law firm keeps disclaimers per office, fills admissions per attorney from the directory, shows the signature in the sender's own compose window and keeps a change history for compliance review. AutoSignature does all four for a flat price per firm, starting at $99 a month for up to 25 mailboxes.
If you are comparing vendors, the Exclaimer alternative and CodeTwo alternative pages set out where each product is stronger.
Does it work with Outlook on attorneys' phones?
Yes. The signature is set on the mailbox, so Outlook on Windows and Mac, the new Outlook, Outlook on the web and the mobile apps pick it up, with a short mobile variant if you turn it on. Details are on the Outlook signature manager page.
Put one approved signature on every attorney's email
Team is $99 a month for up to 25 mailboxes, Business is $299 a month for up to 150, and yearly billing takes about 20 percent off. Every plan covers Microsoft 365 and Google Workspace.
Related: email disclaimer software, Office 365 email signature management, email signature management software, email signature software for accounting firms and HIPAA compliant email signature software for medical practices.