---
title: "Frequently Asked Questions (FAQ)"
manual: "Microsoft Exchange 365 Mailer"
version: "main"
permalink: "https://docs.typo3.org/permalink/oliverkroener/ok-exchange365-mailer:faq@main"
source: "Faq.rst"
rendered: "2026-10-04T20:03:13+00:00"
---

# Frequently Asked Questions (FAQ) {#faq}

**How can I install this extension?**

See chapter [Installation](https://docs.typo3.org/permalink/oliverkroener/ok-exchange365-mailer:installation@main).

**How to can I include the TypoScript?**

See chapter [Configuration](https://docs.typo3.org/permalink/oliverkroener/ok-exchange365-mailer:configuration@main).

**Where to get help?**

See chapter [Where to get help](https://docs.typo3.org/permalink/oliverkroener/ok-exchange365-mailer:help@main).

**Inline images (`cid:`) render broken in received mails**

This was a known issue that has been **fixed** in the related
dependency `oliverkroener/ok-typo3-helper` (version 3.1.2 and later).

Emails with inline images reference the embedded attachment through a
`cid:` URL in the HTML body. Microsoft Graph does **not**
auto-generate a matching `Content-ID` for inline attachments, so the
reference was left dangling and the image rendered broken in the
recipient's mail client. `MSGraphMailApiService` now carries the
original `Content-ID` over to the Graph `FileAttachment`, so inline
images display correctly.

No change is required in this extension — simply make sure
`oliverkroener/ok-typo3-helper` is on version `3.1.2` or newer
(`composer update oliverkroener/ok-typo3-helper`). The dependency
constraint (`^3`) already allows it.