What are the main features that impact the email deliverability?

Hey, I just got a list of 30k email addresses. I am preparing a template to send a marketing email to this list. Do I need to take any pre-caution?

Is there any software that can store card or other payment related details in a secure manner?

Want to know the alternative of Chargebee?

Best accounting software for Saas startup

Is there any software I can use to manage my failed transactions?

What are the main features I have to keep in mind before choosing subscription management software?

Why proper product descriptions is important for SAAS businesses?

How can I manage/store all the transaction related data or customers information if I switch my payment gateway?

Can any one share tips for growing SAAS application and a very rapid rate. 

How to calculate customer lifetime value (LTV)?

Does any payment gateway help you to redeem the failed or rejected payments?

I am a little bit confused about MRR & revenue recognition. Is MRR is an alternative form of revenue recognition?

How can I grow my SAAS business? Suggest me any solution?

Any software that provides free invoicing for small business.