Windows 10: Default mail app can no longer send emails

I've been using the default mail app for a few years now, with it linked to my icloud email to send and receive through that. This has always worked fine, until today; now I am unable to send emails through the Mail app. I get this message:

"Send error:


We weren't able to send this message, so we've put it in your Drafts folder. Before you try sending it again, you can check to see if the address is correct and that no attachments are too large."


It is still able to receive mail, just not send it. I've tried sending just a test message to myself, and it will send if I send it from my phone or on the icloud site, and I can even receive it in the mail app, but trying to send it from the mail app fails and results in the same send error.


I've tried searching for answers, but most seem to be related to multiple recipients and are from new accounts. This has broken randomly, as far as I can tell. I tried resetting the app in Apps & Features -> Mail and Calendar -> Advanced Options -> Reset. This did not fix the issue.

:)

 

Make 'Mail' app default for sending emails and not Outlook


I have both the windows 10 mail app and office outlook installed but when emailing a document from within windows file explorer it always tries to send it using Outlook.

Is there a way to get it to default to send using the Mail app instead?

I have tried setting the default app as mail in the Default Settings but it keeps trying to send from outlook.

 

Office 2013 Mail Merge sending no emails

I used to have no problems sending a Mail merge on Windows 7, however, trying to do one today on Windows 10, and it's simply not working.

I've done everything the same, using an excel document as the data source, and that works fine. When I select Finish & Merge -> Send Email Documents and then OK, Word makes it appear it worked (all the dynamic values change to those of the contacts as it cycles through sending each email), but that's it. Not one email is sent; nothing in my sent items and nothing shows that any of those contacts have been email on our exchange or email archive software.

I've seen that people suggest that Outlook is my default app (it is). Double checked the registry key as well Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail\(Default) has the value Microsoft Outlook.

I've literally done nothing different from when doing this on Windows 7; seems that the searches seem to suggest that it's a common problem as well, but everyone seems to say they had a problem and disappears from their support request (and most answer tell you to check the above registry key).

 

Default Mail Client

Scenario 1

Possibly, whatever he/she used to access their email, that client asked if they wanted to make it default and you are not setup in that to send or receive email.

Look through your email client settings and make your default or, if, you are using Windows.
See here:
Change the default e‑mail program
and
How To Change Default Email Client

Or, you can try to re-install the email client/app.

Scenario 2

You are saying you had to Dban your desktop; I will assume you wiped your drive and re-installed the O/S and apps. If this is the case you will need to setup your email, again... make sure you have used the proper settings for your email provider (incoming and out going server addresses, ports, pop3, SMTP, SSL and security settings, passwords, log-ins, etc.).
If you overlook one little item, you may receive (or not) mail, but the server may reject your sent mail.

Goto the providers site and look instructions on setting up different email apps.

It would have helped, if, you would have stated what O/S, email client, and provider you are asking about.