I am considering not to go back to the Netherlands but instead to Vietnam
From here (vietnam) i will start with a fresh new NON-O marry visa..........is this possible?
or must you obtain a NON-O marry visa from your home country
Also (if possible) 
Must i apply the visa in person at the Thai embassy in Hanoi or through the new website (https://tp.consular.go.th/)

Thank you

no, it's not visa, but health entry to thailand

This is the site for e-visa.

https://www.thaievisa.go.th/

Enter Thailand visa-exempt. Then convert to Non-O.

I did that a few months ago. Not a big deal.

Previously the Thai embassy and the consulate in Ho Chi Minh City were issuing non-o visa based upon marriage to a Thai to any nationality.

See this page for the requirements at the consulate. https://hochiminh.thaiembassy.org/en/publicservice/non-immigrant-o-accompanying-thai-spouse-and-family-members

The https://tp.consular.go.th/ site is only for applying for a Thailand Pass for entry to Thailand.

Before planning a trip to Vietnam you need to check their current requirements for entry.

Edit: Appointment site for the consulate. 

https://booking.setmore.com/scheduleappointment/f8af2588-daa5-4e23-9bea-6b35c5e06758/services/1fd945a8-1937-43af-99b3-51b251017d1a

 

6 minutes ago, PoorSucker said:

This is the site for e-visa.

https://www.thaievisa.go.th/

But nether the embassy or consulate in Vietnam is using the site.

Applications are only done in person.

54 minutes ago, ubonjoe said:

But nether the embassy or consulate in Vietnam is using the site.

Applications are only done in person.

My wife (planning) is joining me to Vietnam.We are planning to visit Hanoi (Both fully vaccinated)
I want to use my (holiday) time to get a new visa

So if i read well..........
1. I must have a Thailand PASS (my thai wife too??) which i can do online
2. I need to get IN PERSON to obtain a NON-O marry visa which is 80$ and takes 2 days
   must make a appointment
3. All requirements (vaccinations/insurance etc) 

I understand that entering Vietnam have also its requirements
Does Hanoi have the same polici as HCMC?

3 minutes ago, MICHAELDUTCH said:

Does Hanoi have the same polici as HCMC?

Their website is mostly in Thai now. https://rtehanoi.thaiembassy.org/th/index

I used google translate to help me but found very little info about visa applications.

I had no luck finding the requirements for a non-o visa based upon marriage on the site.

You should contact them about their requirements. https://rtehanoi.thaiembassy.org/th/page/26656-working-hours-visa-section?menu=5d7de15d15e39c3484001bb7