Can you send images in data:uri format to GMail? - email

I'm making a web app in Django that sends user an image to their email.
The way that seems most attractive to me for sending the image is in the data:uri format.
However, I tested sending this email with a data:uri image in it to my GMail account, and the email shows, but without the image!
I know that Chrome and Firefox can both open data:uri images. So it's not a browser problem. But I don't see the data:uri image in GMail at all.
Does GMail not support data:uri images? Or possibly I'm sending them wrong?

It's not supported.
Mail clients simply remove this from your post.
Here is a good reference of what can be supported:
http://www.campaignmonitor.com/css/

Not supported. It's also blocked in other clients like Outlook.
Some reasons:
help avoid viewing potentially offensive material
with low-bandwidth connections, blocking inline images allows the client to decide whether a particular image warrants the time and bandwidth required to download it
You can attach an image with the src attribute pointing to a separate part of the message using a Content ID (CID).
<img src="cid:imagecid"/>
--001a1141059012513a055a1b9499
Content-Type: image/jpeg
Content-Transfer-Encoding: base64
Content-ID: <imagecid>
R0lGODlhDwAPAKIEAP/ql9yuA...
--001a1141059012513a055a1b9499--

Related

Multiple attachments to an HTML email, different mail clients

I'm trying to send an email with multiple attachments (for example, a jpg and a pdf) in a way that the attachments will show up correctly for Outlook, Gmail, and Mail on iOS.
What I've tried
If I send the email as a plain text email, all clients show the attachments.
If I include plain text and html parts to the email, both attachments disappear in iOS, while only the jpg disappears in Outlook. Gmail shows both attachments.
If I use plain and html parts, but in the body of the HTML include <img src="cid:<the content id of the file to attach>"> for the image file only, then Outlook and Gmail both show the pdf as an attachment and have the image embedded in the body. iOS has the image embedded and doesn't show that there is a pdf attachment at all.
If I abuse the <img>, just to see what happens, and include a <img src="cid:<the content id of the file to attach>"> for both the jpg and another for the pdf (I know, I know), then iOS finally (and bewilderingly) shows the image embedded and an icon to download the pdf (which works; if I tap it, the pdf renders as expected). But now Outlook shows the embedded image and a broken link image below it in the body (clicking on it does nothing), and no pdf attachment in the attachments area. Gmail shows the image embedded, and while it still shows the pdf as an attachment, the thumbnail is now blank and clicking on it won't render the pdf (though if you download it, then re-open the file in Chrome, it renders perfectly).
Question What is the lowest common denominator of headers, encoding, or whatever else is in the behind-the-scenes of composing the email bits that all three mail clients will understand. I'm not particular about the image being embedded vs being a just a regular attachment like the pdf, but regular attachment is preferred. I just need everyone I may send the email to, regardless of client, to see and be able to access the attachments.
I tried sending from an Outlook address to itself and to Gmail with the same attachments. Here's the difference in the structures of the emails:
The one that fails:
multipart/mixed
multipart/alternative
text/plain
multipart/related
text/html
image/jpeg
application/pdf
While the one that works is:
multipart/mixed
multipart/alternative
text/plain
text/html
image/jpeg
application/pdf
Note: I'm using coldfusion (hence the src="cid:...." in the <img>, but that's irrelevant. I just need to know what the clients are expecting, and I can then hammer out how to bend a given language to produce that.

How to display images within html email content in gmail?

In yahoomail and html email, the images are loading but not in gmail. I observed that in gmail, the image urls are altered.
For example,
Image URL in yahoo/Hotmail : http://qaecmwcs.qacorp.moneygram.com/sites/Satellite?blobcol=urldata&blobkey=id&blobnocache=true&blobtable=MungoBlobs&blobwhere=1515690635784&ssbinary=true
Url for the same image in Gmail : https://ci5.googleusercontent.com/proxy/2B2Fyk0aboH-eiikaxVWdIC9DXbJzhZEuWKm5yPwUeXf3SdYRuoKBGT-HeCFRlNcg7VTzljtSsEhHkikFMGPac35C6Az2Fc2wsdig3xj0S3g1bEIABaMx9RKnTjYuqagP1hUGNl3GG4f2aHy26wHrINZkdn5Wv3y6zcvbWHUL8rabUcjHuCO05i8RM31x8iFJmUorccqIJM6P9f6-eLIaQ5GpZYCrKPJws72HfM2-AsXcg=s0-d-e1-ft#http://qaecmwcs.qacorp.moneygram.com/sites/Satellite?blobcol=urldata&blobkey=id&blobnocache=true&blobtable=MungoBlobs&blobwhere=1515690635784&ssbinary=true
When I manually remove the additional url part in the image src,from DevTools then I am able to see the image. Can any one please let me know how I can handle this in gmail?
If you want an image to work in email, it has to be viewable by your audience. The image path should be straightforward and simple. What you have posted over and over in your questions are images that are not accessible to the general public, so they will never work for an email.
Image Path
This is how an image should be formatted:
<img src="staticpath" alt="imagename" class="imageclass" />
<img src="https://www.w3schools.com/images/w3schools_green.jpg" width="104" height="142" alt="W3Schools.com">
<img src="https://placehold.it/600x600" height="600" width="600" />
More information:
https://www.w3schools.com/html/html_images.asp
Image Descriptors
As a best practice, an image path should end in a descriptor that defines what the format of the image. Images that work well with emails include .jpg .png .gif.
More Information:
https://litmus.com/blog/png-gif-or-jpeg-which-ones-should-you-use-in-email
Email Templates
Your email templates should follow the basic practices of a well-formatted html page. Email development is not Web development because email clients do not support current html 5 or css 3 standards. So it can be very hit and miss to create a complex email.
The following email templates will give you a good idea how an email should be created, how images should look, how image classes work.
Email template Examples:
http://tedgoas.github.io/Cerberus/
https://foundation.zurb.com/emails/docs/v1.0.5/index.html
Please take the time to read through this answer, read through the attached examples.
Best Practices & Considerations when writing HTML Emails
Good luck with your images.
The firewall was blocking the images from displaying. When client opened the firewall then the images within the server are loaded.

Some HTML attributes are not working in email.(border, cellspacing...)

Here's an email template with HTML.
And I tried to copy it in web browswer and paste in Outlook 2007.
But it looks different because border="0" cellpadding="0" cellspacing="0" doesn't work in email.
For the worse, it varies from the each email system(Outlook, Gmail, hanmail...).
Is there any way to work HTML perfectly in every email system?
Thanks, always.
=======================
This is what it should be.
And this is from DAUM Hanmail,
and Gmail.
You see, Html Email has its pros and cons, and these might even vary with the email client too.
Here are some known limitations (some might nolonger be true though):
Large email bodies may not be sent to NotifyLink devices as HTML when Smart Retrieval is enabled (NotifyLink Enterprise Server: Contol Option Rules) or the body size is set to a limit that does not accommodate the email body size. The email will sent in plain text.
Forwarding an HTML email from the device results in the forwarded email showing the original message twice, once in plain text and once in HTML format, when viewed on Oracle Beehive v1.5.x, Scalix, Sun, and Zimbra mail servers.
Using the Retrieve or Retrieve All options will not retrieve a full HTML picture email. This may be due to a bug with the BlackBerry OS v5.0.
An HTML message viewed on the device that includes a phone number will not allow the phone number to be selected for dialing.
The bodies of messages sent using ActiveSync's SmartForward or SmartReply commands will always be in plain text format.
Body text that has been copied and pasted from a MS Word document into emails sent to the device in HTML format are cut off when the email has been sent from a Kerio mail server.
Read more here...
How to Code Html Email correctly
And More Here...
I am afraid that not all email clients render HTML emails in the same way. Even between different version of Microsoft Outlook there are several differences.
You may find interesting the next article
http://www.campaignmonitor.com/css/
Hope this helps.

How can I send an HTML email from a browser client?

I want to send an email in HTML to a user from browser client i.e send mail from Gmail, Yahoo, etc.
I paste the HTML I want to send in the text area, but the HTML is not getting rendered when I receive it.
HTML emails need a content-type: text/html header otherwise they are assumed to be plain text. You do not mention what language you are using, but if you are using PHP, you can use PHP Mailer to make sending HTML emails a little easier.
<textarea> tag is for user input. Users can't insert any data in mails, so this tag won't be rendered. If you just showing the information, use tag <p> instead.
http://www.labnol.org/internet/send-html-email/19672/
Be careful with how you use this though, GMail could very well blacklist you if your recipient list is too long. I use it all the time for tests.

iPhone - Send contents of webview as mail

I'm composing my messages using images, text and audio files and finally showing the preview in Webview. Now, I want to send what ever it is showing in web view as mail. Even images and audio files must be sent so that end user has just to see the message with all images and aduio files as in original message.
Is it possible?
Send the actual HTML of the web page. Be sure to set the in the page, so any links in the page will be referenced relative to the original URL. There are upsides and downsides to this method:
UPSIDE: Small file will be sent - just the HTML of the base page
DOWNSIDE: Any images and sounds will not be sent in the message - and will have to be downloaded by the users email client from the original URL when the page is viewed. (Any web client that supports HTML content type will be able to do this.)
Don't forget to set the content (MIME) type of the email message to TEXT/HTML.