Letter Box Pricing

New plans launching May 19, 2025

We’re introducing updated pricing and plans for new subscriptions starting May 19th, 2025.

👉 See what’s changing

Free Forever

$0

Individual Constituent Letters
Individual Gift Letters
Bulk Letters
eSignatures via DocuSign
Receipt Number Generator
500 Letters / month
5 Templates

Premium Plan

US$79

All of Free Forever
Built-in Email Delivery
Giving Summary Templates
Conditional Templates
Automated Pledge Reminders
Tributes
Soft Credit Acknowledgements
Scheduled Letters
Auto Send Letters
2,000 Letters / month
Unlimited Templates
Need more letters? Add Letter Packs

Premium Plan Pricing

Show pricing in

Pay Annually

/mth

Per month billed annually

Pay Month-to-month

/mth

Billed month to month

Need extra letter allowance?

Add an extra 2k of letters/month is available by either:

Purchasing a Letter Pack of 2k extra letters,
valid for 30 days from purchase.

Or add a recurring Letter Allowance of 2k extra letters/month – paid annually.

Testimonials

5 star review
  • Makes Email Marketing a breeze!

    Using Campaign Monitor as our Email Marketing Software, we needed something to bridge the gap between RE and CM – the Email Marketing Connector does just that, fully automating all data processes between the two platforms seamlessly!

    The team are incredibly helpful, from onboarding to support, replies are speedy, friendly, and help with any questions we may have.

    Adam
    Hospice in the Weald
  • Letter Box is superb! Time saver!

    Letterbox is a great product; the letters can be done in bulk and a pdf of the letter is added to each GIFT for that particular donor; you can also do individual letters and save to the record.
     
    Red Arc is continuing to enhance the product every day – recent additions are summary letters that you can customize. There is a free version that allows for 5 templates – we started with that and saw the value and upgraded to the premium version (it’s a very reasonable expense) and are so very glad we did.
     
    Thank you Red Arc for an amazing product!
     
    Elaine
    Texas Women’s Foundation
  • Measure engagement data in just a few clicks. It's that simple!!

    This out-of-the-box product allows you to quickly develop constituent engagement scores in a matter of seconds. Just open the tile, link to a list, add scoring criteria, and boom, you have an engagement tile that measures how engaged your constituents and prospect are. Each individual is given their own score based on the criteria you set. Completely flexible and customizable for any user regardless of skill level. Highly recommend this product.

    Bob
    St Norbet College
  • Highly recommended for RE NXT!

    Email Marketing Connector has increased efficiencies for my organization, allowing us to build segments and manage email automation through a smooth integration. Our relationship managers especially love the user interface within the Email Activity tile, providing insights into the email marketing activities and email behaviours of our donors. Once set up, the connection was seamless and easy to set and forget. I highly recommend the connector for integrating RENXT with email marketing systems (Campaign Monitor for us)

    Jenna
    Boys and Girls Clubs
  • Needs More Than Five Stars!

    Letter Box saves our office an infinite amount of time with acknowledgement letters. We used to export our gift lists to a separate spreadsheet and merge – those days are over. Letter Box instantly takes your list and creates professionally crafted letters every time. The best part is it the templates are 100% customizable, so if you have a slight amount of coding knowledge, you can alter how your letters look even further than what the base customization can do. We are grateful to Letterbox for saving us headaches, and giving us more time to interact with our donors
    Chris
    University of Charleston

Got questions? 

Just get in contact, we’d love to chat!