Why is SMTP mail activity not working in UiPath - email

I have a problem with the SMTP mail activity in UiPath. It does not send any mails, neither does it give me any errors. It continues into infinity without exception. Does anybody know why this is happening or is it an error in UiPath's package? I have cross-checked all the errors I could have made and another developer has already looked at it for several hours and still no solution.
In addition, I have searched and there is a solution to getting the error thrown, but it still does not send any mails.

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OGG Converter Issues - Can't Contact Online-Convert

I’ve been trying to contact the help desk at https://www.online-convert.com/help about an issue with their MIDI to OGG converter. Their web site doesn’t have a telephone number, e-mail or snail mail address, just an online form to communicate with them.
Unfortunately, that single method of communication is broken. I’ve tried over 10 times to send them a message over a couple of days, but the system fails every single time. All I get is the cryptic error message: “Something went wrong. Please try again later.”
Does anyone know how to contact this organization? I like their converters, as they yield some of the best quality OGG files I've heard, but if I can’t contact them for support, I may have to go elsewhere.
Any ideas on how to contact them would be appreciated!
Problem solved: If cookies for their Website were blocked, the comment submission failed. Sadly, it took much trial & error for me to discover this. Would have been much simpler had their error message described the reason for the failure.

Outlook Application wont send mails every second instance

I know I should probably ask MS about this, but I dont know if I trust their communication tools to get me a satisfying answer.
I have recently taken the task to test an application of mine.
Part of this test is to send an e-mail to it, then log in and see if I get the result I want (this is automated)
For this the process is:
Open Outlook -> Send Mail
Close Outlook
Open App -> Check result
Open Outlook -> Send Mail
Close Outlook
But for some reason, every second time the outlook app is opened, (including manually opening the app to check on configurations etc.) Mails will go to the outbox but will not be sent, unless I manually trigger them to.
Now, there are possible solutions like keeping the app running continously, or telling my testing-suite to press F9 after every sent mail, but I want to tackle the root cause, and fix the underlying problem.
The Outlook Version used is the latest Version of Office 365 Outlook.
Has anyone else had this experience and figured out a fix?
Thank you in advance.
Keep in mind that message submission is an asynchronous process, so if you close Outlook while it is still sending, the message might end up stuck in the Outbox.
You can call Namespace.SendAndReceive to force submission, but it is still asynchronous. You can hook into the SyncObject.SyncEnd event on the first (All Accounts) SyncObject from the Namespace.SyncObjects collection and quite only after that event fires.
Since this problem occured on a machine I do not own, I tried avoiding certain easy troubleshooting steps. After I couldnt find an answer on my own, and I didnt get responses here that would've helped me solve this without a wooden hammer method, I asked for permission to issue a repair to the local office 365 suite.
After the repair it had redownloaded and installed the entirety of office 365.
After connecting my company MS account to outlook, the issue no longer appeared.
I guess this counts as solving this issue.

Listed in Razor 2 Nobody on the internet knows an answer

I wanted to start a small campaign of about 400-500 emails and I tested the email with mail-tester.com
The problem is that I've got these 2 errors and nobody on the internet knows an answer for it:
-2.43 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level above 50%
-1.729 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/)
This happends for both the domain and subdomain. I tried sending an email with a completely changed text (something about animals I've found on wikipedia) and without signature, I even tried sending an empty email and got the same misterious errors.
I tried sending the exact same mail + signature from another domain and it worked perfectly without any error.
What should I try next, considering the fact that it's impossible to change the domain name?
How popular is SpamAssasin with its Razor 2 or is it maybe irrelevant?
Should I wait or on the contrary send as many emails as possible to detect clean traffic?
Thanks

How to test MAPI Send Email errors

We have a program written in Delphi that can send emails via simple MAPI
for the people that use MAPI with outlook installed 95% of the time it works fine
but for the 5% of people that it doesn't just work for is there anyway to Test MAPIlooking for something where we can find if there is an issue with our program or if its something that their hardware guy needs to fix.Would be good if its some Microsoft tool or something official so if we go to the clients hardware/IT guy and say test this he will trust the results of the test
some errors we have come across include
api-ms-win-crt-runtime-l1-1-0.dll is missing from your computer. Try reinstalling the program to fix this problem.
Access violation only for one contact in the outlook address book - happened when calling the MAPIResolveName (no solution found for this - client didnt want to reinstall outlook)
Mapi error 26 for Office build version 1703 - first email goes through ok but they all fail after that. (You can make a work around by using the MapiLogOn and pass the session handle through in the MAPISendMail call)
Either there is no default mail client or the current mail client cannot fulfill the messaging request

PEAR Mail using gmail SMTP won't send 2 emails in sucession

I have PEAR Mail and Mail_mime all working very nicely using gmail's SMTP server to send. Thanks to some posts on here that helped me get that far!
But, in some scenarios, I need to send two emails, with different content, and to different recipients one right after the other. This is refusing to work.
I can confirm both the emails I am trying to send are well-formed and valid, as both will send with the other one commented out. But whenever I attempt to send them both, only the first gets through. I have tried putting php to sleep for 10 seconds in between, and I have tried sending the second email in a different script that gets called after the end of the first. Nothing.
I realise this is a pretty obscure problem as I found no other articles mentioning this. I haven't included any code because, as stated, I know the code works fine.
So I am hoping in vein that someone might have a bright idea as to why this might be.
Thanks in advance.
SOLVED: changing
include('Mail.php');
to
require_once('Mail.php');
fixed the problem.