Copilot in Outlook vs Spellbook

Copilot in Outlook and Spellbook sit in the same category. The verdict below is calculated for each role from the tasks, the role fit and the price.

Short answer

Copilot in Outlook wins for 18 of 20 roles in our data. Copilot in Outlook starts at $20/mo; Spellbook publishes no fixed price.

Verdict by role

Role	Better choice	Why
Accountant	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
Lawyer	Spellbook	works for free; has a free plan
HR manager	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
Finance manager	Copilot in Outlook	covers 2 tasks relevant to this role against 1; built for this role
Manager	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Marketer	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Sales manager	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Data analyst	Copilot in Outlook	covers 2 tasks relevant to this role against 1; built for this role
Teacher	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Executive assistant	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Logistics manager	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Procurement manager	Either one	even on tasks, Spellbook is cheaper to start
Secretary	Copilot in Outlook	covers 5 tasks relevant to this role against 2; part of the role's core toolkit
Recruiter	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
HR administrator	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
Tax consultant	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
Auditor	Copilot in Outlook	covers 2 tasks relevant to this role against 0; built for this role
Economist	Copilot in Outlook	covers 2 tasks relevant to this role against 1; built for this role
Project manager	Copilot in Outlook	covers 5 tasks relevant to this role against 2
Social media manager	Copilot in Outlook	covers 5 tasks relevant to this role against 2

Side by side

	Copilot in Outlook	Spellbook
Vendor	Microsoft	Rally Legal
Category	Documents and writing	Documents and writing
Free plan	No	Yes: A trial after sign-up
Cheapest paid plan	Included in Copilot Pro, $20/mo	price on request
Top plan	Included in Microsoft 365 Copilot, $30/mo	price on request
Tasks covered	5	3

Copilot in Outlook: Summaries of long email threads, reply drafts and meeting prep right in Outlook.

Spellbook: Lawyer's assistant in Word: tracked-change edits, missing clauses and risks.

Only Copilot in Outlook covers

Only Spellbook covers

Pitfalls to watch at work

Copilot in Outlook

A thread summary misses attachments and late edits in quoted text: check amounts and dates in the email itself
The reply draft picks up the tone of the previous email, including a sharp one: reread before sending
A personal Copilot Pro subscription on a work mailbox takes company email outside its tenant: work mail needs a business license

Spellbook

Spellbook takes market standards from common law practice: edit clauses on jurisdiction, penalties and currency for your governing law yourself
Review every tracked change before accepting: a bulk "accept all" brings the other side's positions into the contract
Contracts with real parties are processed in the cloud: check the vendor's confidentiality terms before the first client contract

FAQ

Is Copilot in Outlook or Spellbook better for work?

In our data Copilot in Outlook is the better choice for 18 of 20 roles. The table above shows the reason for each role.

Which is cheaper, Copilot in Outlook or Spellbook?

Copilot in Outlook starts at $20/mo; Spellbook publishes no fixed price.

Do Copilot in Outlook and Spellbook have free plans?

Copilot in Outlook: No. Spellbook: Yes. A trial after sign-up.

Compare Copilot in Outlook with

Compare Spellbook with

Alternatives to Copilot in Outlook · Alternatives to Spellbook · Copilot in Outlook pricing · Spellbook pricing