Shrini
Noorul#DigitalOcean gets u $50 for 30 days upon usd 5 payment.
You be good with this option.
Vultr.com cost 2.5$ per month.
Ovh.com offers cheap unmanaged vps
These are low cost price from good service provider.
Though, we may need better resource to run a few Web app along Yunohost packages.
I've used YunoHost on DigitalOcean for nealy an year.
Basically, I run #YunoHost for mail suite, Webmail
And pleroma too.
Other Web app can be installed and managed separately.
Mail suite has number of application to run.
It has spam filter to work.
The real problem is to set up necessary dns records to ful functional mail server.
Sometimes, headache to get all working at first
full email stack (Postfix, Dovecot, Rspamd, DKIM)
I faced hurdle at initial set up and not really look into maintaining, except backing up mail directory
I went on setting up mail suit individually, but it wasn't worth my effort for less than 200 mail accounts totally.