It's very nice to meet you! Let me explain who I am and why I contacted you. 
I understand that my letter may seem suspicious, but I am not spam or one of the many scammers that are everywhere here. I am a member of the website Ukraniansingles, a special website for Ukrainian girls looking to find men from other countries.
For relationships, friendship, partnership. Girls there look for men based on their needs. But the thing is, this site is paid.
I can't write to men there because the site constantly asks me to buy credits to send messages. I don't want to spend any more money on this, so I asked for your email address after spending my remaining credits.
I thought you might be interested in meeting new people. I would like to continue communicating and get to know each other better. I am 32, single, looking for a life partner. I am self-employed, living alone. I thought that maybe you are also single and miss female company. Let me know if you are interested in me and if I should expect further communication from you. Jana

I'm really glad you decided to reply to me. I know that letters like this can raise suspicion. But I didn't know how else to contact you, so I decided to take a chance
Why did you decide to reply to me? You probably get letters like this all the time if your email address somehow ended up on that website.
I don't know where these websites get this information from, but the fact remains.
I decided to contact you just out of curiosity. I didn't think you would reply to me, etc. I just wrote on the off chance, so to speak.
So thank you for replying to me. We can get to know each other better with each letter.
Your birthday is coming up soon. Do you have any plans for that day?
Once we get to know each other better, we can use WhatsApp. I can't give you my phone number right now because I've had a bad experience in the past. Once, my phone number ended up in the hands of scammers, and it caused me a lot of problems... It's a long story. Since then, I've been careful and try not to give out personal information on the internet or to strangers.
For now, we can start communicating here and see how things go. Are you okay with that?
I'll say right away that I'm not interested in your money, etc. Age, nationality, distance, etc. don't matter to me either.
I'm looking for a life partner, someone I could have a relationship with.
I'm tired of being alone, you know... But I haven't had much luck here either. But who knows, maybe you'll turn out to be a good match.
Just thinking out loud
If you don't like me and you don't feel any chemistry or attraction towards me, please let me know right away, okay? I will accept whatever decision you make. I'm a reasonable girl and I know perfectly well that it's impossible to please everyone.
But if you do decide to continue communicating and I've piqued your interest, I can tell you a lot about myself So I'm waiting for your reply

Jana