Many services out there that will do it, but your crm may also do it, sometimes it just takes a bit of exploring to decide which one is best for your needs.

Do an action plan on your CRM and send a personal note on those dates instead of some stock commodity card.

  Handwritten notes, or a phone call, will get better results.

I suspect there are, including Send Out Cards, but the personal handwritten cards are a nicer touch. It’s pretty easy to do and a nice feeling to receive them

I don't kow of any, but I bet you could google one

I am sure you can find some that do.  It would be so much nicer and so much more appreciated, it if you sent a hand written note...you may even get a referral from it.  We all like the human touch.  A

You have many great answers here...

No, I don't. I don't believe in automated drip of this sort. I order my home anniversary cards each year and personally write and address them each year to each client. It's the personalized aspect of it that generates referrals not an automated drip. How much time can it really take to personalize? (Not much.)

Dario, use your CRM to alert you a week before an anniversary, birthday or house-a-versary and send out a card with a handwritten note. People love to hear from YOU, personally!

Personal cards are much more effective.

Thanks Ryan Huggins for bringing me in... Dario, I have a past client retention software called BellaRuby ENGAGE. It enables you to give your customers software to help them be better homeowners and keeps you in touch with them forever.

Here are two links to check out. Ping me if you have questions... 

Overview - https://bellaruby.com/engage-re/

Ongoing Communications - https://bellaruby.com/branded-reminders/

I'm sure some CRMs do that.  Contact Nat Wallen he has a product that will do that and more.

Not sure, but I think sendoutcards.com does it.

As Alexandra Ron and Alexandra Seigel replied never forget the human approach, it makes a difference...really it does.  

Yep.  And they're terrific. Tell them I sent you.

http://www.successconceptsonline.com

Century 21 has that service available through the franchise. I am sure there are other companies that offer it.

Never ever underestimate the PERSONAL touch in this often impersonal world.   Use your best service option out there -- your writing hand. 

I personally never used them and just do it myself, handwriting my thanks for past and future business. 

what is wrong with a small gift?

Nope.

No.

I used Send out Cards for years but since I do handwritten notes every day I just do them myself now. 

 there are many companies that satisfy that task... I do so much direct mail marketing, if someone is interested in selling, they call us.... the name and niche are branded and have been for 40 years.... 

There are many sources out there. Make sure you check quality and price before committing. 

Most CRM will do this.

Every calendar which you have access to can alert you of the cards you should mail this week.

Every agent focused CRM will allow you to schedule a anniversary message to be sent via email. Even the free email programs like Gmail or Outlook can do this.

Most agent focused CRM have partnerships with outside vendors who will actually print and post the card for you. The problem is, how will you kno it was sent to arrive in time?

Start with WiseAgent.com. Do not overlook BellaRuby.com and the value added potential this resource provides.

But, be careful of chasing shiny things.

There are a lot of these, but it's also easy to make your own.

There is a company in Denver that mails birthday cards and anniversary card for 3 years for a set price but can not remember their name.  google it.

There are many options available. Just research and you'll find them.

Bob Crane nailed this one!