How to Shorten an Email with AI Without Losing the Request

“Please review when you have a moment” is shorter than a paragraph of instructions. It is also a different request if the original asks someone to approve an attached draft by a specific time—or send a revised completion date if they cannot.

AI can help remove repeated background and reorganize a long email. Before asking for fewer words, identify the information the recipient needs to act. Otherwise, a smoother sentence can quietly remove the deadline or turn a request for approval into a request for comments.

Begin with the email, not a generic instruction to be concise

This fictional email concerns an internal workshop invitation. The exercise keeps the deliverable in English.

Subject: Following up on the workshop invitation draft

Hi Alex,

I wanted to follow up on the workshop invitation we discussed in the
planning meeting. We have now incorporated the comments from the last
round, and I have attached invitation-v3.docx so that you can see the
latest wording in one place. It has taken a few rounds to bring the
different suggestions together, so I would really appreciate your
help with this final check.

Could you please review the attachment and either approve it or send
the changes you need by 15:00 Shanghai time on 22 September 2026?
At this stage, please focus only on the title and registration paragraph.
The date and venue have already been approved and should remain unchanged.
We need your response before we can release the invitation. If that
deadline is not workable, please let me know by the same time when you
can finish. Until we receive approval, the invitation will remain on hold.

Thanks again for taking a look and for all your input so far.
Mei

Much of the first paragraph explains how the draft came about. The second contains the actual request, its scope and what happens if approval does not arrive. That is where shortening needs particular care.

Decide what the recipient must still know

Preserve the attachment name, the choice between approval and requested changes, the deadline with timezone, and the two sections under review. Also retain the instruction not to change the approved date and venue.

The fallback is part of the request: if Alex cannot finish, Alex should provide a completion time by the same deadline. “Let me know if you have questions” would not preserve that instruction. The hold on publication matters too; silence is not approval.

Give the assistant an explicit keep-list:

Shorten this email to at most 100 words, excluding the subject line.
Keep a polite, direct tone. Remove repeated background, not requirements.
Preserve the attachment filename, approval-or-changes request, exact
deadline and timezone, review scope, approved details that must not change,
fallback response, and the hold until approval.
Do not add urgency, promises, or consequences absent from the original.
Return the email, then a separate checklist showing where each requirement
is preserved. Do not include the checklist in the email itself.

[Paste the original email.]

The word limit is a constraint for this exercise, not a rule for every email. If the requirements cannot fit clearly, allow more space rather than turning explicit instructions into hints.

Review a shorter version against the original

An author-written reference rewrite is:

Subject: Review invitation v3 by 22 September, 15:00 Shanghai time

Hi Alex,

Please review invitation-v3.docx and send approval or requested changes
by 15:00 Shanghai time on 22 September 2026. Review only the title and
registration paragraph; keep the approved date and venue unchanged.

If you cannot finish by then, please send your expected completion time
by the same deadline. The invitation remains on hold until approval.

Thanks,
Mei

This is a reference example, not a recorded response from an AI product. It removes the drafting history and repeated thanks while retaining the instructions. The deadline remains in the body as well as the subject, so the recipient does not have to rely on the inbox preview.

Read the rewrite as Alex. Can you identify the file, the response to send, the time to send it, and what to do if you cannot finish? This is a stronger check than asking whether the email sounds professional.

Watch for changes disguised as shorter wording

“Please approve by Tuesday” removes the option to request changes and loses the precise time. “Please review the invitation” broadens the scope beyond the two named sections. “We will send it after the deadline” changes the approval condition. None is merely a stylistic edit.

If a rewrite makes one of these changes, point to the missing requirement: “Restore the option to send requested changes; approval is not the only acceptable reply.” Compare the next version with the original keep-list, not only with the flawed previous rewrite.

Before sending, attach the actual file and check that it is the version named in the message. AI can shorten the words around an attachment; writing the filename does not attach it. Save the accepted email once its instructions are clear, and send that version rather than generating another unreviewed variation.