Yes. I've convinced myself so many times that fixing a bug or shipping a new feature was more important than closing the round.

Figuring out the business model was tough. We started off with a freemium model and pricing that was a hunch. Now we're doing 30 day free trials and it's much easier to spend time on the right kind of customers.

In Europe and a lot of developing countries, where missed calls aren't charged for - this kind of 'nudge' communication is pretty common. I have no idea if it'll work in the US but it's certainly valuable when both parties already have known context, e.g. 'I'll missed call you when I'm outside'

We've found that people who come back after 3 days, are very likely to be there in 30 days, assuming the product solves their problem. In general, we treat them as steps in the funnel - complete signup to become MAU, come back in 3 days to be HEU. We look at where in the funnel we're currently failing and spend time on that piece.

I often feel the same way. I did suggest 3 'better' metrics in the article. The problem is we're brought up on generalized metrics and when in reality we need most likely need to create our own to really understand how our business is working, imo. Although the created metrics can/should be derivatives of the most often used metrics.

We use Hackpad as our wiki at SendHub and it's awesome. Great job guys and congrats on the well deserved coverage.

We used to offer a $10 plan but we found the margins were very low. $25 allows us to provide great support and very few users need more than the limits on the plan.

Line2 is $15/mo and it offers a pretty good service including desktop clients. Oh, did I mention they offer unlimited calls and texts? I'm using it for business - I ported my toll-free number to Line2 and I get unlimited calls and texts (!) with toll-free number. Yes, you read this correctly - I can text from my toll-free number and I can receive texts, too. The only thing they suck at is offering an API.

Thanks Chris.

Yep, pretty close. We used to offer individual accounts - those folks were hard to convert, hence the large number of free users.

Thank you for validating the pseudo-math :)

And, yeah, converting any free accounts to paid is an achievement in and of itself. Best of luck in growing the company!

MMS is coming soon but the network operators aren't always easy to deal with. Right now, we put a link in the sms, that way you can send any file type.

Getting an MMSC exposed from a network operator is a nigh-impossible task (source: I'm a telecom junkie).

The MMSC infrastructure is unnecessarily complex and, for some ungodly reason, is seen as a proprietary network advantage. Your best bet is to make an end-run around the carriers by partnering with an aggregator like Acision (or someone smaller if you lack the volume).

MMS is one of the most difficult things to get carriers to expose :/...