Of course, spam filtering software is not perfect and sometimes emails genuinely don't get through, but in genuine business relationships such instances are rare. There are exceptions, of course -- one of my clients *never* gets my emailed invoices, even when I send them back via 'reply' to an email they send me. But she gets every other email I send. And yes, I *do* track those errant emails via delivery and read receipts. Bizarre, huh?

If you find that you are having repeated problems with undelivered emails and 'blacklisting', you may want to take advantage of Ken Evoy's "Deliver My Mail" campaign. Details are at http://deliver-my-mail.sitesell.com/hsis.html.

2. SMS Similar to email, but slightly more intrusive (because many of us find it hard to ignore our mobile phones, even if it is just a txt message coming in). I don't want to interrupt my recipient, but I do want them to be aware of an upcoming requirement or request. Or I just want to wish them 'bon voyage' without interrupting them from packing.

3. Phone call Only used if I have an urgent need to resolve an issue.

I have found that even highly personal matters can be first discussed using non-intrusive technology like email. I don't have to go into detail, but I can let my recipient know that there is something I would like to discuss when they have a free moment. It gives them a chance to collect their thoughts before we talk over phone or, preferably, in person.

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