SendOut - Affordable email marketing for bloggers and influencers
Send Mail Get Mail - A postcard-sending website.
Mailblast - Email marketing on a budget using Amazon SES
The Simple Postcard - Text a photo to mail it as a postcard
Platformly - Platformly is a suite of tools for multi-channel marketing automation.
NanaGram - Text your photos and we'll mail 4x6 prints to your Nana.