Postlets vs zumper vs Craigslist for rental listings

[Amit M.]

hey folks,

I've been using craigslist to post my rentals for years, with largely good results. But I'm wondering if newer web sites/apps likes postlets or zumper, etc. will reach a broader audience. Anyone have experiences with these?

Also, I briefly looked at them and it looked like I must list my phone number.  That's somethign I never do- I only want initial communications with prospective tenants via email. If you have experience with these sites and know if I can use them without listing a tel#, I'd appreciate the details. Thanks!