New Outlook Missing Features: What Is Gone and What to Use
The short answer
As of July 2026, new Outlook for Windows has no COM add-ins, VBA macros, custom forms, voting buttons, rules import and export, business cards or network-share attachments. PST, offline, archive, Quick Steps, Search Folders, conditional formatting, public folders and delegation are partial. Multiple profiles and LDAP are still pending. Verify against Microsoft's live comparison.
The features missing in new Outlook, grouped by area — and whether each one is absent, partial, or has a different equivalent. Checked July 2026.
On this page
- 01Which features are missing in new Outlook?
- 02How to read the status column
- 03Extensibility: add-ins, macros and custom forms
- 04Data: PST files, offline access and archive
- 05Rules, Quick Steps and automation
- 06Collaboration: delegation, public folders and voting
- 07Accounts, profiles and directories
- 08What to do when one of these blocks you
- 09Where AI Emaily fits, and where it does not
- 10The short version
Which features are missing in new Outlook?#
Most lists of the features missing in new Outlook are wrong in the same way: they treat every gap as identical. In practice there are three very different situations, and knowing which one you are in decides whether you can switch this afternoon or need to stay on classic Outlook for another year.
Some capabilities are genuinely absent from new Outlook for Windows and are not planned. COM and VSTO add-ins, VBA macros, custom forms, voting buttons, importing and exporting rules, business cards and attaching files straight from a network share all fall here.
A second, larger group is partially available. PST files, offline access, archive, Quick Steps, Search Folders, conditional formatting, public folders and delegation all exist in some form but do less than the classic version. These are the ones that catch people out, because the menu item is there and the behaviour is not.
A third group has simply moved. The job still gets done, through a different mechanism with a different name. Counting those as losses is how a switch decision gets made on bad information.
This list has a shelf life — status checked July 2026
How to read the status column#
Every table below uses the same three-way status, because the difference decides what you do next.
Where we could not confirm a current status, the row says so and tells you to verify. That is more useful than a confident guess that ages badly.
| Status | What it means | What to do about it |
|---|---|---|
| Absent | The capability does not exist in new Outlook for Windows, and the architecture makes it unlikely to arrive. | Plan around it permanently. Either change the workflow or keep classic Outlook for that one job. |
| Partial | It is present but narrower than the classic version — fewer options, fewer surfaces, or fewer supported account types. | Test the specific task you rely on, not the presence of the menu item. Re-check each quarter; these rows move. |
| Different equivalent | The job is still possible through a different mechanism, name or place. | Learn the new path once. Nothing is lost, and staying on classic for this alone is not worth it. |
Extensibility: add-ins, macros and custom forms#
This is the sharpest cliff, and it is the reason most people end up searching for this list in the first place. New Outlook for Windows is a web-architected client, so it supports one extension model — web add-ins — and nothing else.
We cover the add-in side in depth in a separate post on COM add-ins not working in new Outlook, including how to audit your add-ins before you switch. The summary is below so this inventory stays complete.
| Feature (classic Outlook) | Status in new Outlook | What to use instead |
|---|---|---|
| COM and VSTO add-ins | Absent | Check whether the vendor ships a web add-in, then install it from Apps, Get Add-ins. If none exists, classic Outlook is the only place that add-in runs. |
| VBA macros and the Developer tab | Absent | Power Automate or a Microsoft Graph script for repeatable actions. Judgement-based macros have no direct replacement. |
| Custom forms (published Outlook forms) | Absent | No equivalent. Move the process to Microsoft Forms, a Power App, or keep it in classic Outlook. |
| Web add-ins | Different equivalent | The same model Outlook on the web uses. Pin them from the Apps button; reading and composing are separate surfaces. |
| Add-in deployment by an admin | Different equivalent | Integrated apps in the Microsoft 365 admin center, rather than a per-machine install. |
Data: PST files, offline access and archive#
This group causes the most confusion because the answers keep changing. Microsoft has been shipping improvements to PST and archive handling in new Outlook through 2025 and 2026, so anything you read from last year is likely to understate what works now.
The pattern is consistent: reading and importing tend to arrive before the full classic behaviour does. If your work depends on a local file rather than a mailbox, test with a copy first.
| Feature (classic Outlook) | Status in new Outlook | What to use instead |
|---|---|---|
| PST files | Partial — improving, verify current state | Import what you need into the mailbox. For heavy PST work, keep classic Outlook available. |
| Offline access | Partial | Offline works but is narrower than classic's cached Exchange mode. Set the offline period in Settings before you travel, then test it disconnected. |
| Online archive mailbox | Partial — shared-mailbox archive was listed as added in 2026; verify | Confirm your own archive and any shared archives you need before you switch. |
| Local .ost cached mode | Different equivalent | New Outlook keeps its own local store rather than a classic .ost. You manage a sync window, not a file. |
| Attaching files from a network share | Absent | Copy the file locally and attach it, or share a link from OneDrive or SharePoint. |
| Drag and drop from Outlook into other apps | Partial — listed on the roadmap; verify | Save the message or attachment first, then drag from the folder. |
Rules, Quick Steps and automation#
Rules themselves survive the switch, because server-side rules live on the mailbox rather than in the client. What does not survive is the tooling around them — the .rwz export file, and the client-only rules that needed classic Outlook to be running.
The automation shortcuts are the partial category at its most annoying. Quick Steps exist in new Outlook with a shorter list of available actions, so a Quick Step that chained four actions in classic may only rebuild as two.
| Feature (classic Outlook) | Status in new Outlook | What to use instead |
|---|---|---|
| Import or export rules (.rwz) | Absent | Recreate rules by hand. Server-side rules already follow the mailbox, so you may have fewer to rebuild than you expect. |
| Client-only rules | Different equivalent | New Outlook leans on server-side rules, which run whether or not the client is open — usually an improvement. |
| Quick Steps | Partial | Rebuild them with the actions that are available, and split a long chain into two. Check what you lose before you delete the classic version. |
| Search Folders | Partial | Saved searches and filters cover most day-to-day cases. Complex multi-condition folders may not rebuild exactly. |
| Conditional formatting | Partial | A limited implementation. Colour categories plus a rule that applies them is the closest reliable substitute. |
| Delayed delivery via a rule | Partial | Schedule send on an individual message works well. Blanket rule-based delay is limited — verify before relying on it. |
| OFT templates and mail merge | Partial | The My Templates add-in covers reusable text. Word-driven mail merge is restricted; use a dedicated tool for real volume. |
Collaboration: delegation, public folders and voting#
This is the group most likely to block a whole team rather than one person, and it contains the single most confusing gap in the entire migration: delegation is split across two clients.
Calendar delegation works in new Outlook. Mail-folder delegate permissions, as of July 2026, still have to be assigned from classic Outlook or from Outlook on the web. Using delegated access is fine; granting it is where you get stuck.
| Feature (classic Outlook) | Status in new Outlook | What to use instead |
|---|---|---|
| Calendar delegation | Different equivalent | Supported, with a different settings path. Grant it from Settings, Calendar, Shared calendars. |
| Assigning mail-folder delegate permissions | Partial — assign it elsewhere | Set the permissions in classic Outlook or Outlook on the web, then use the delegated mailbox from new Outlook. |
| Shared mailboxes | Different equivalent | Add them as accounts. Shared-mailbox archive support arrived later than the mailbox itself — verify yours. |
| Public folders | Partial | Mail and post folders behave differently from calendar and contact folders. Test the exact folder type your team uses. |
| Voting buttons | Absent | Microsoft Forms, or a poll in Teams. Neither returns results into the message the way voting buttons did. |
| Business cards (contacts sent as cards) | Absent | Attach a .vcf file, or paste the details into the message body. |
| SharePoint calendar sync to Outlook | Absent | Open the calendar in SharePoint or Teams, or use a Microsoft 365 group calendar instead. |
The delegation split is the enterprise blocker
Accounts, profiles and directories#
The last group decides whether new Outlook can be your only client at all. If you run several mail profiles, connect to an on-premises Exchange server, or look people up in an LDAP directory, check this table before anything else.
Two of these rows are listed by Microsoft as upcoming rather than never. That distinction matters — an upcoming feature is a wait, and an absent one is a workflow change.
| Feature (classic Outlook) | Status in new Outlook | What to use instead |
|---|---|---|
| Multiple mail profiles | Absent — listed as upcoming; verify | Add accounts side by side in one window instead. There is no profile switch at startup. |
| On-premises Exchange mailboxes | Partial | Connection is limited, commonly via IMAP rather than full MAPI. Classic Outlook remains the supported client for on-prem. |
| LDAP directory lookup | Absent — a roadmap entry exists; verify | The Microsoft 365 global address list covers cloud directories. A third-party LDAP directory does not have an equivalent yet. |
| Gmail, Yahoo and IMAP accounts | Different equivalent | Supported, but synced through Microsoft's cloud rather than a direct client-to-server connection. Check your organisation's policy before adding one. |
| Per-profile data files and settings | Different equivalent | Settings follow the account in the cloud, so a new machine picks them up without a profile rebuild. |
What to do when one of these blocks you#
A gap only matters if it sits in something you do regularly. Work through it in this order rather than switching back and forth on instinct.
- 1
Write down the job, not the feature
"Log this email against the deal" is a job. "The Salesforce COM add-in" is one implementation of it. Jobs usually have more than one route; features have exactly one.
- 2
Check the status yourself, today
Open Microsoft's feature comparison page and find your row. Note the date you checked it. Half the advice online, including lists like this one, is a snapshot of a moving target.
- 3
Test it in Outlook on the web
New Outlook and Outlook on the web share an architecture and an add-in model. Anything that works in the browser will work after you switch, and you can test it without touching your desktop client.
- 4
Look for the different equivalent before declaring it gone
Server-side rules, colour categories, scheduled send, group calendars and the My Templates add-in between them cover a surprising number of apparent losses.
- 5
Decide from blockers, not from the length of the list
One unreplaceable daily task outweighs fifteen things you touch twice a year. If the blocker is real, keep classic Outlook installed for that one job.
- 6
Set a quarterly reminder
Partial rows move. The archive, PST and delegation entries all changed during 2025 and 2026. Re-check the ones that blocked you rather than assuming the answer holds.
You are not switching under a deadline
Where AI Emaily fits, and where it does not#
We build AI Emaily, so here is the honest version. Nothing on this page is fixed by changing email clients — a COM add-in runs inside classic Outlook and nowhere else, and we are not a substitute for one. If Salesforce logging or e-signature is your blocker, classic Outlook or the vendor's web app is still the answer.
What AI Emaily does is connect your Outlook or Microsoft 365 mailbox alongside Gmail and IMAP in one client; setup is at /docs/connect-outlook. It triages, summarises long threads and drafts replies from a Personal Context you set yourself, plus client profiles you control, rather than reading back through your old mail. Nothing sends without your approval in Copilot mode, and every action has undo and an audit trail. That is a different problem from the one this inventory covers.
The short version#
The permanently absent list is short and specific, the partial list is longer and keeps moving, and a fair number of apparent losses are the same job under a different name. Sort your own must-haves into those three buckets before you decide anything.
Then audit the blockers against Microsoft's current comparison page, test them in Outlook on the web, and keep classic Outlook for the handful of jobs that genuinely need it. There is no announced deadline forcing the decision, so a slow, checked migration is the cheapest one.
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Written by
Nafiul HasanNafiul Hasan is an entrepreneur and AI automation system builder with 10+ years of experience turning messy, manual workflows into reliable automated systems. He designs and ships AI enterprise solutions end-to-end — the agent logic, the data plumbing, and the product people actually use — and founded AI Emaily to give busy professionals their attention back. He writes here from the builder's seat: what works, what breaks, and how to put AI to work without giving up control.