Email marketing integrations, ready to switch on

Email tools want a clean list, and the list changes somewhere else: a new deal in the CRM, a purchase in the shop, a form on the site. These pairs keep contacts and tags in step, so a campaign goes to the people it should and nobody is emailed after they've bought or cancelled.

Nothing here needs an agency. You paste two keys, pick which lists and tags matter, and the syncing runs on its own.