Tags: mailchimp

5

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Saturday, March 9th, 2019

Updating email addresses with Mailchimp’s API

I’ve been using Mailchimp for years now to send out a weekly newsletter from The Session. But I never visit the Mailchimp website. Instead, I use the API to create a campaign each week, and then send it out. I also use the API whenever a member of The Session updates their email preferences (or changes their details).

I got an email from Mailchimp that their old API was being deprecated and I’d need to update to their more recent one. The code I was using had been happily running for about seven years, but now I’d have to change it.

Luckily, Drew has written a really handy Mailchimp API wrapper for PHP, the language that The Session’s codebase is in. Thanks, Drew! I downloaded that wrapper and updated my code accordingly.

Everything went pretty smoothly. I was able to create campaigns, send campaigns, add new subscribers, and delete subscribers. But I ran into an issue when I wanted to update someone’s email address (on The Session, you can edit your details at any time, including your email address).

Here’s the set up:

use \DrewM\MailChimp\MailChimp;
$MailChimp = new MailChimp('abc123abc123abc123abc123abc123-us1');
$list_id = 'b1234346';
$subscriber_hash = $MailChimp -> subscriberHash('currentemail@example.com');
$endpoint = 'lists/'.$listID.'/members/'.$subscriber_hash;

Now to update details, according to the API, I can use the patch method on that endpoint:

$MailChimp -> patch($endpoint, [
    'email_address' => 'newemail@example.com'
]);

But that doesn’t work. Mailchimp effectively treats email addresses as unique IDs for subscribers. So the only way to change someone’s email address appears to be to delete them, and then subscribe them fresh with the new email address:

$MailChimp -> delete($endpoint);
$newendpoint = 'lists/'.$listID.'/members';
$MailChimp -> post($newendpoint, [
    'email_address' => 'newemail@example.com',
    'status' => 'subscribed'
]);

That’s somewhat annoying, as the previous version of the API allowed email addresses to be updated, but this workaround isn’t too arduous.

Anyway, I figured it share this just in case it was useful for anyone else migrating to the newer API.

Update: Belay that. Turns out that you can update email addresses, but you have to be sure to include the status value:

$MailChimp -> patch($endpoint, [
    'email_address' => 'newemail@example.com',
    'status' => 'subscribed'
]);

Okay, that’s a lot more straightforward. Ignore everything I said.

Friday, August 3rd, 2018

Post Haste

Look, it’s Friday—were you really going to get any work done today anyway?

Wednesday, November 6th, 2013

Pattern Library | MailChimp

The markup for the patterns that Mailchimp use on their products. I love getting a glimpse of how companies handle this kind of stuff internally.

Tuesday, October 2nd, 2012

Social Login Buttons Aren’t Worth It | MailChimp Email Marketing Blog

A great in-depth explanation by Aarron on why Mailchimp dropped their Facebook and Twitter log-in options. Partly it was the NASCAR problem, but the data (provided by user testing with Silverback) also brought up some interesting issues.

Sunday, June 5th, 2011

Customer Stories: A Book Apart | MailChimp

A wonderfully made video on the story of A Book Apart. Mandy should have her own show.