What Interspire is
Interspire is an email marketing platform for businesses that want to grow an audience and send campaigns without being penalised for that growth. You build newsletters, automations, and product emails from one place — with an AI assistant to help write them and built-in tools to keep your messages landing in the inbox.
Why we built it
Most email tools charge by the size of your list, so the bill climbs every time you add a contact — even contacts who never open a message. We think that’s backwards. Interspire keeps subscribers unlimited on every paid plan and charges only for the emails you actually send. You grow your list freely and pay for usage, not for storing names.
What you can do with Interspire
- Design campaigns with a drag-and-drop editor and reusable blocks
- Write faster with an AI assistant for subject lines and copy
- Automate welcome series, re-engagement, and behaviour-based journeys
- Grow unlimited lists with hosted signup forms and segmentation
- Authenticate your sending (SPF, DKIM, DMARC) and monitor deliverability
- Track opens, clicks, and send-time performance
Deliverability and data
Getting email delivered is the whole job, so authentication and sender-reputation tools are built in rather than bolted on. Subscriber data is hosted on UK and EU infrastructure and handled in line with the UK GDPR. You remain in control of your contacts; for the data you bring to the platform we act as a data processor, as described in our Privacy Policy.
Where we are
Interspire is operated from the United Kingdom and prices are shown in GBP. You can reach a real person at [email protected] — we read and answer every message.
Try it
Every paid plan starts with a 14-day free trial and never asks for a card up front. Start your free trial or see the plans.