How to support HTML mail in a diffbackend?

[ajc]

Hey everyone,

I'm still merrily hacking away at a diffbackend, and of course all I'm able to do so far is ugly old plain text email.

What is the correct and preferred way to deliver HTML email in a diffbackend on Z-Push 2?

I'm using the current trunk. I googled for some examples of what others are trying, but the examples I found all use out of date API.

Is there an official way to do HTML email, or will the code require modification? If so, can someone point me where to start? (I've signed the contributor agreement and will submit the changes if I need to make them.)

Thanks!

[mku]

Hi ajc,

take a look at setMessageBodyForType function in mapiprovider.php of the Zarafa backend. The part in

Code: Select all

if (Request::GetProtocolVersion() >= 12.0) {

is what you need to set the message body. The rest is then done by Z-Push libraries.

Greets, Manfred

[ajc]

Does that mean that HTML mail is not supported by ActiveSync protocol versions <12.0 ? Is that a limitation of ActiveSync itself, or of Z-Push?

[mku]

Hi ajc,

it's a limitation of ActiveSync. Only devices which request the full RFC-822 message with SYNC_BODYPREFERENCE_MIME (e.g. iPhones and some android devices) are able to display html emails with ActiveSync version 2.5.

Greets, Manfred

[ajc]

I did some experimentation, and determined that if I set $output->mimedata to the full RFC822 message, $output->mimedata to 0, and $output->mimesize to the length of $output->mimesize, I get HTML mail display on my Android without having to make any special requests in my backend.

Is it true that if the message contains inline images, some clients (Apple) will extract them from the RFC822, while others (Android) will look for them in the attachment chain? In the latter case, how does it reference them? By their cid?

[fmbiete]

Hi ajc,

Attachments are referenced at server by the attname (2.5) or filereference (12+).
Inside the message, cid is used

I'm working in adding support ASV12+ to the IMAP backend.
Currently it's working pretty fine (MIME format for iOS, HTML/TXT format for Android).
If interested, you can get a copy here (I'm using Z-Push 2.0.4 in that branch)
https://github.com/fmbiete/PHP-Push-2/tree/imap_asv12

Regards