The Charity Technology Trust launched two systems designed to improve charities' ability to raise funds online, at last week's National Fundraisers' Convention.
The technology charity has struck a deal with online promotions company myoffers.co.uk to build a database of more than 19,000 email addresses of people who have opted to receive information about online raffles.
This list will be provided to charities free of charge when they work with the trust on a raffle campaign.
"By providing a database of people who are receptive to receiving online promotions, we're opening up new revenue streams for charities looking to generate funds through the internet,
said Peter Sweatman, chief executive of Charity Technology Trust.
The trust has designed a system to enable organisations to run large email marketing campaigns, and to sub-divide their email lists to tailor messages to different supporter segments.
The charity, which launched earlier this year, has worked with a range of organisations including Oxfam and Barnardo's on devising online raffles.
The National Fundraisers' Convention was held in Birmingham.