Useful language: informal letters / emails

Beginnings

Dear + name (email: Dear or Hi)
Sorry for not writing earlier but …
Thank you / Thanks (so much) for (your letter, having me to stay, etc.)
It was great to hear from you …

Endings

That’s all for now.
Hope to hear from you soon. / Looking forward to hearing from you.
(Give my) regards / love to…
Best wishes / Love (from)
PS I enclose a photo of the three of us (email: I attach…)